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Change log

Substreams builds upon Firehose. Keep track of Firehose releases and Data model updates in the Firehose documentation.

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

v1.11.3

Server-side

  • Fixed: detection of gzip compression on 'connect' protocol (js/ts clients)

  • Added: tier1.Config EnforceCompression to refuse incoming connections that do not support GZIP compression (default: false)

v1.11.2

Server-side

  • Fix too many memory allocations impacting performance when stores are used

CLI

  • Force topological ordering of protobuf descriptors when 'packing' an spkg (affecting current substreams-js clients)

  • Allow substreams pack to be able to do a "re-packing" of an existing spkg file. Useful to apply the protobuf descriptor ordering fix.

Docker image

  • Rebuilt of v1.11.1 to generate Docker latest tag with revamp Docker image building.

  • Substreams CLI is now built with using Ubuntu 22, previous releases were built using Ubuntu 20.

  • Substreams Docker image is now using ubuntu:22 as its base, previous releases were built using ubuntu:20.04.

v1.11.1

  • Fix the gui breaking when the network field is not set in the spkg

  • Fixed SUBSTREAMS_REGISTRY_TOKEN environment variable not taking precedence over the registry-token file.

v1.11.0

  • Commands run, gui and info now accept the new standard package definition (ex: ethereum-common@latest) to reference an spkg file from https://substreams.dev.

  • Changed substreams run: the two positional parameters now align with gui: [package [module_name]]. The syntax substreams run <module_name> is not accepted anymore.

  • Added substreams publish to publish a package on the substreams registry (check on https://substreams.dev).

  • Added substreams registry to login and publish on the substreams registry (check on https://substreams.dev).

  • Added substreams tools extract-wasm to extract a wasm file from a substreams package.

v1.10.11

  • Add avalanche-mainnet to the CLI.

v1.10.10

  • Fix substreams gui selecting the wrong module in the 'outputs' view if there is no output the selected output_module.

  • Add the block 'age' printed clock headers in thesubstreams run command.

v1.10.9

  • Add Mantra Mainnet and Testnet to the HardcodedEndpoints map.

  • Add Vara Mainnet and Testnet to the HardcodedEndpoints map.

  • Fix substreams gui command downloading spkg twice which would cause some issues with spkg that are very big.

  • Add base58 decoding in the output view for the substreams gui

v1.10.8

Server

Note All caches for stores using the updatePolicy set_sum (added in substreams v1.7.0) and modules that depend on them will need to be deleted, since they may contain bad data.

  • Fix bad data in stores using set_sum policy: squashing of store segments incorrectly "summed" some values that should have been "set" if the last event for a key on this segment was a "sum"

  • Fix panic in initialization (metrics sender not set)

v1.10.7

  • Fix small bug making some requests in development-mode slow to start (when starting close to the module initialBlock with a store that doesn't start on a boundary)

  • Fixed substreams build creating a buf.gen.yaml file with absolute paths (should be relative)

  • Removed --show-generated-buf-gen flag to substreams protogen

  • Bumped neoeinstein-prost version in auto-generated buf.gen.yaml file when using substreams protogen or substreams build (compatible with new substreams-0.6 and prost-0.13)

v1.10.6

  • Fixed substreams gui panic (regression appeared in v1.10.3)

v1.10.5

  • Fixed an(other) issue where multiple stores running on the same stage with different initialBlocks will fail to proress (and hang)

v1.10.4

Server

  • Fix bug where some invalid cursors may be sent (with 'LIB' being above the block being sent) and add safeguard/loggin if the bug appears again

  • Fix panic in the whole tier2 process when stores go above the size limit while being read from "kvops" cached changes

CLI

  • Add -o cursor output type to substreams run for debugging purposes

v1.10.3

Server

  • Fix "cannot resolve 'old cursor' from files in passthrough mode" error on some requests with an old cursor

  • Fix handling of 'special case' substreams module with only "params" as its input: should not skip this execution (used in graph-node for head tracking) -> empty files in module cache with hash d3b1920483180cbcd2fd10abcabbee431146f4c8 should be deleted for consistency

CLI

  • Add substreams tools default-endpoint {network-name} to help with auto-configuration tools

  • Bump substreams init protocol version to "1" to be compatible with new codegen endpoint

v1.10.2

  • substreams gui: fix panic in some conditions when streaming from block 0

v1.10.1

Server

Note Since a bug that affected substreams with "skipping blocks" was corrected in this release, any previously produced substreams cache should be considered as possibly corrupted and be eventually replaced

  • Fix handling of modules that receive both filtered AND unfiltered data as their inputs -> some "repeated entries" could appear where no data should have showed up

  • Fix stalling on substreams with both map and store with different initialBlocks on the same stage

  • Fix: prevent execution of modules that should be skipped when running live or dev mode (different outputs than when running in batch mode on tier2)

Client

  • substreams gui fixed a panic occuring if the given package path doesn't exist

  • substreams init must now be called from within your project folder (it no longer downloads file in a subdirectory)

  • (since v1.10.0) substreams gui no longer accepts "output_module" as a single argument. It either receives nothing, the package, or the package followed by the output_module

v1.10.0

Server

  • Add sf.substreams.rpc.v2.EndpointInfo/Info endpoint (if the infoserver is given as a module, i.e. from firehose-core)

  • Add an execution timeout of 3 minutes per block by default (can be overriden in tier1/tier2 Configs) -- this is useful when an external (eth_call) is stuck on a forked block hash.

  • Revert 'initialBlocks' changes from v1.9.1 because a 'changing module hash' causes more trouble.

  • Wazero: bump v1.8.0 and activate caching of precompiled wasm modules in /tmp/wazero to decrease compilation time

  • Metering update: more detailed metering with addition of new metrics (live_uncompressed_read_bytes, live_uncompressed_read_forked_bytes, file_uncompressed_read_bytes, file_uncompressed_read_forked_bytes, file_compressed_read_forked_bytes, file_compressed_read_bytes, file_uncompressed_write_bytes, file_compressed_write_bytes). DEPRECATION WARNING: bytes_read and bytes_written metrics will be removed in the future, please use the new metrics for metering instead.

  • Manifest reader: increase timeout of remote spkg fetch to 5 minutes, up from 30 seconds

Client

  • Add substreams auth command, to authenticate via thegraph.market and to get a dev API Key.

  • Rename --discovery-endpoint into codegen-endpoint in substreams init command.

  • Add substreams codegen subgraph command that takes a substreams module and an spkg and that generates a simple subgraph from the module output.

  • On substreams init command, if flag --state-file is provided, the state file is used by default for project generation.

  • In substreams init command, the state file is named using a Date format and not using Unix anymore.

  • Tools->prometheus: added the possibility to override the start-block on an endpoint

  • substreams gui no longer accepts "output_module" as a single argument. It either receives nothing, the package, or the package followed by the output_module

v1.9.3

  • Fixed error handling issue in 'backprocessing' causing high CPU usage in tier1 servers

  • Fixed handling of packages referenced by ipfs:// URL (now simply using /api/v0/cat?arg=...)

  • Added --used-modules-only flag to substreams info to only show modules that are in execution tree for the given output_module

v1.9.2

Added

  • Added support for directly reading spkg file that is compressed with zstd (from http, gs, s3, azure or local)

Fixed

  • Prevent Noop handler from sending outputs with 'Stalled' step in cursor (which breaks substreams-sink-kv)

v1.9.1

Fixed

Fixed substreams hanging in production-mode on chains with a 'first-streamable-block' higher than 0:

  • all initialBlocks will be 'bumped' to the first-streamable-block if it is higher

  • this will affect the module hashes: use substreams info --first-streamable-block=<block_num> to see how a value will affect your modules

  • modules with initialBlocks higher than the first-streamable-block of a chain will be unaffected.

v1.9.0

Important BUG FIX

  • Fix a bug introduced in v1.6.0 that could result in corrupted store "state" file if all the "outputs" were already cached for a module in a given segment (rare occurence)

  • We recommend clearing your substreams cache after this upgrade and re-processing or validating your data if you use stores.

Fixed

  • substreams 'tools decode state' now correctly prints the kvops when pointing to store output files

Added

  • Expose a new intrinsic to modules: skip_empty_output, which causes the module output to be skipped if it has zero bytes. (Watch out, a protobuf object with all its default values will have zero bytes)

  • Improve schedule order (faster time to first block) for substreams with multiple stages when starting mid-chain

v1.8.2

  • substreams init (code generation): fix displaying of saved path in filenames

v1.8.1

  • Add a NoopMode to the Tier1 enabling to avoid sending data back to requester while processing live.

v1.8.0

Remote Code Generation

The substreams init command now fetches a list of available 'code generators' to "https://codegen.substreams.dev". Upon selection of a code generator, it launches an interactive session to gather the information necessary to build your substreams. This allows flexibility and getting anything from "skeleton" of a substreams for a given chain up to a fully built .spkg file with subgraph bindings.

Added

  • Add 'compressed' boolean field to the 'incoming request' log

  • Add a substreams live back filler, so a request running close to HEAD in production-mode on tier1 will trigger jobs on tier2 when boundaries are passed by final blocks, backfilling the cache. These jobs will be "unmetered".

Fixed

  • Fixed Substreams tier1 active worker request metrics that was not decrementing correctly.

  • Truncate error messages log lines to 18k characters to prevent them from disappearing through some load balancers.

Removed

  • Removed local ethereum code generation from init command.

v1.7.3

Server-side improvements

  • Faster bootstrapping through bstream improvements, now only loads and keeps 200 blocks below LIB to link with merged blocks.

  • Fixed delay in serving requests close to chain HEAD when using production-mode

v1.7.2

Improvements on the use attribute

  • If module with use attribute has not inputs at all, inputs are replaced by used module inputs

  • If module with use attribute has no blockFilter, it's replaced by used module blockFilter

  • If blockFilter is set to {}, it will be considered as nil in the spkg, enabling module with use attribute to override the blockFilter by a nil one

v1.7.1

Highlights

  • Substreams engine is now able run Rust code that depends on solana_program in Solana land to decode and alloy/ether-rs in Ethereum land

How to use solana_program or alloy/ether-rs

Those libraries when used in a wasm32-unknown-unknown context creates in a bunch of wasmbindgen imports in the resulting Substreams Rust code, imports that led to runtime errors because Substreams engine didn't know about those special imports until today.

The Substreams engine is now able to "shims" those wasmbindgen imports enabling you to run code that depends libraries like solana_program and alloy/ether-rs which are known to pull those wasmbindgen imports. This is going to work as long as you do not actually call those special imports. Normal usage of those libraries don't accidentally call those methods normally. If they are called, the WASM module will fail at runtime and stall the Substreams module from going forward.

To enable this feature, you need to explicitly opt-in by appending a +wasm-bindgen-shims at the end of the binary's type in your Substreams manifest:

binaries:
  default:
    type: wasm/rust-v1
    file: <some_file>

to become

binaries:
  default:
    type: wasm/rust-v1+wasm-bindgen-shims
    file: <some_file>

Others

  • substreams.yaml now supports localPath attribute under protobuf.descriptorSets, so you can pre-build a descriptor set using buf build --as-file-descriptor-set -o myfile.binpb and add it directly to your substreams package.

  • Substreams clients now enable gzip compression over the network (already supported by servers).

  • Substreams binary type can now be optionally composed of runtime extensions by appending a +<extension>,[<extesions...>] at the end of the binary type. Extensions are key[=value] that are runtime specifics.

    [!NOTE] If you were a library author and parsing generic Substreams manifest(s), you will now need to handle that possibility in the binary type. If you were reading the field without any processing, you don't have to change nothing.

  • Fixed a failure in protogen where duplicate files would "appear multiple times" and fail.

  • Fixed bug with block rate underflow in gui.

v1.7.0

  • Added store with update policy set_sum which allows the store to either sum a numerical value, or set it to a new value.

  • Re-added Ethereum Sepolia support in substreams init.

  • Fixed a bug with the new descriptorSets feature that wasn't ordered properly to correctly generate Protobuf bindings.

v1.6.2

  • execout: preload only one file instead of two, log if undeleted caches found

  • execout: add environment variable SUBSTREAMS_DISABLE_PRELOAD_EXEC_FILES to disable file preloading

v1.6.1

  • Revert sanity check to support the special case of a substreams with only 'params' as input. This allows a chain-agnostic event to be sent, along with the clock.

  • Fix error handling when resolved start-block == stop-block and stop-block is defined as non-zero

v1.6.0

Upgrading

Note Upgrading to v1.6.0 will require changing the tier1 and tier2 versions concurrently, as the internal protocol has changed.

Highlights

Index Modules and Block Filter

  • Index Modules and Block Filter can now be used to speed up processing and reduce the amount of parsed data.

  • When indexes are used along with the BlockFilter attribute on a mapper, blocks can be skipped completely: they will not be run in downstreams modules or sent in the output stream, except in live segment or in dev-mode, where an empty 'clock' is still sent.

  • See https://github.com/streamingfast/substreams-foundational-modules for an example implementation

  • Blocks that are skipped will still appear in the metering as "read bytes" (unless a full segment is skipped), but the index stores themselves are not "metered"

Scheduling / speed improvements

  • The scheduler no longer duplicates work in the first segments of a request with multiple stages.

  • Fix all issues with running a substreams where modules have different "initial blocks"

  • Maximum Tier1 output speed improved for data that is already processed

  • Tier1 'FileWalker' now polls more aggressively on local filesystem to prevent extra seconds of wait time.

Fixed

  • Fix a bug in the gui that would crash when trying to restart the stream.

  • fix total read bytes in case data already cache

Added

  • New environment variable SUBSTREAMS_WORKERS_RAMPUP_TIME can specify the initial delay before tier1 will reach the number of tier2 concurrent requests.

  • Add 'clock' output to substreams run command, useful mostly for performance testing or pre-caching

  • (alpha) Introduce the wasip1/tinygo-v1 binary type.

Changed / Removed

  • Disabled otelcol:// tracing protocol, its mere presence affected performance.

  • Previous value for SUBSTREAMS_WORKERS_RAMPUP_TIME was 4s, now set to 0, disabling the mechanism by default.

v1.5.6

Fixes

  • Fix bug where substreams tier2 would sometimes write outputs with the wrong tag (leaked from another tier1 request)

Remove

  • Removed MaxWasmFuel since it is not supported in Wazero

v1.5.5

Fixes

  • bump wazero execution to fix issue with certain substreams causing the server process to freeze

Changes

  • Allow unordered ordinals to be applied from the substreams (automatic ordering before flushing to stores)

Add

  • add substreams_tier1_worker_retry_counter metric to count all worker errors returned by tier2

  • add substreams_tier1_worker_rejected_overloaded_counter metric to count only worker errors with string "service currently overloaded"

  • add google/protobuf/duration.proto to system proto files

  • Support for buf build urls in substreams manifest. Ex.:

protobuf:
  buf_build:
    - buf.build/streamingfast/firehose-cosmos

v1.5.4

Fixes

  • fix a possible panic() when an request is interrupted during the file loading phase of a squashing operation.

  • fix a rare possibility of stalling if only some fullkv stores caches were deleted, but further segments were still present.

  • fix stats counters for store operations time

v1.5.3

Performance, memory leak and bug fixes

Server

  • fix memory leak on substreams execution (by bumping wazero dependency)

  • prevent substreams-tier1 stopping if blocktype auto-detection times out

  • allow specifying blocktype directly in Tier1 config to skip auto-detection

  • fix missing error handling when writing output data to files. This could result in tier1 request just "hanging" waiting for the file never produced by tier2.

  • fix handling of dstore error in tier1 'execout walker' causing stalling issues on S3 or on unexpected storage errors

  • increase number of retries on storage when writing states or execouts (5 -> 10)

  • prevent slow squashing when loading each segment from full KV store (can happen when a stage contains multiple stores)

Gui

  • prevent 'gui' command from crashing on 'incomplete' spkgs without moduledocs (when using --skip-package-validation)

v1.5.2

  • Fix a context leak causing tier1 responses to slow down progressively

v1.5.1

  • Fix a panic on tier2 when not using any wasm extension.

  • Fix a thread leak on metering GRPC emitter

  • Rollback scheduler optimisation: different stages can run concurrently if they are schedulable. This will prevent taking much time to execute when restarting close to HEAD.

  • Add substreams_tier2_active_requests and substreams_tier2_request_counter prometheus metrics

  • Fix the tools tier2call method to make it work with the new 'generic' tier2 (added necessary flags)

v1.5.0

Operators

  • A single substreams-tier2 instance can now serve requests for multiple chains or networks. All network-specific parameters are now passed from Tier1 to Tier2 in the internal ProcessRange request.

[!IMPORTANT] Since the tier2 services will now get the network information from the tier1 request, you must make sure that the file paths and network addresses will be the same for both tiers.

[!TIP] The cached 'partial' files no longer contain the "trace ID" in their filename, preventing accumulation of "unsquashed" partial store files. The system will delete files under '{modulehash}/state' named in this format{blocknumber}-{blocknumber}.{hexadecimal}.partial.zst when it runs into them.

v1.4.0

Client

  • Implement a use feature, enabling a module to use an existing module by overriding its inputs or initial block. (Inputs should have the same output type than override module's inputs). Check a usage of this new feature on the substreams-db-graph-converter repository.

  • Fix panic when using '--header (-H)' flag on gui command

  • When packing substreams, pick up docs from the README.md or README in the same directory as the manifest, when top-level package.doc is empty

  • Added "Total read bytes" summary at the end of 'substreams run' command

Server performance in "production-mode"

Some redundant reprocessing has been removed, along with a better usage of caches to reduce reading the blocks multiple times when it can be avoided. Concurrent requests may benefit the other's work to a certain extent (up to 75%)

  • All module outputs are now cached. (previously, only the last module was cached, along with the "store snapshots", to allow parallel processing). (this will increase disk usage, there is no automatic removal of old module caches)

  • Tier2 will now read back mapper outputs (if they exist) to prevent running them again. Additionally, it will not read back the full blocks if its inputs can be satisfied from existing cached mapper outputs.

  • Tier2 will skip processing completely if it's processing the last stage and the output_module is a mapper that has already been processed (ex: when multiple requests are indexing the same data at the same time)

  • Tier2 will skip processing completely if it's processing a stage that is not the last, but all the stores and outputs have been processed and cached.

  • The "partial" store outputs no longer contain the trace ID in the filename, allowing them to be reused. If many requests point to the same modules being squashed, the squasher will detect if another Tier1 has squashed its file and reload the store from the produced full KV.

  • Scheduler modification: a stage now waits for the previous stage to have completed the same segment before running, to take advantage of the cached intermediate layers.

  • Improved file listing performance for Google Storage backends by 25%

Operator concerns

  • Tier2 service now supports a maximum concurrent requests limit. Default set to 0 (unlimited).

  • Readiness metric for Substreams tier1 app is now named substreams_tier1 (was mistakenly called firehose before).

  • Added back readiness metric for Substreams tiere app (named substreams_tier2).

  • Added metric substreams_tier1_active_worker_requests which gives the number of active Substreams worker requests a tier1 app is currently doing against tier2 nodes.

  • Added metric substreams_tier1_worker_request_counter which gives the total Substreams worker requests a tier1 app made against tier2 nodes.

v1.3.7

  • Fixed substreams init generated The Graph GraphQL regarding wrong Bool types.

  • The substreams init command can now be used on Arbitrum Mainnet network.

v1.3.6

This release brings important server-side improvements regarding performance, especially while processing over historical blocks in production-mode.

Backend (through firehose-core)

  • Performance: prevent reprocessing jobs when there is only a mapper in production mode and everything is already cached

  • Performance: prevent "UpdateStats" from running too often and stalling other operations when running with a high parallel jobs count

  • Performance: fixed bug in scheduler ramp-up function sometimes waiting before raising the number of workers

  • Added support for authentication using api keys. The env variable can be specified with --substreams-api-key-envvar and defaults to SUBSTREAMS_API_KEY.

  • Added the output module's hash to the "incoming request"

  • Added trace_id in grpc authentication calls

  • Bumped connect-go library to new "connectrpc.com/connect" location

  • Enable gRPC reflection API on tier1 substreams service

v1.3.5

Code generation

  • Added substreams init support for creating a substreams with data from fully-decoded Calls instead of only extracting events.

v1.3.4

Code generation

  • Added substreams init support for creating a substreams with the "Dynamic DataSources" pattern (ex: a Factory contract creating pool contracts through the PoolCreated event)

  • Changed substreams init to always add prefixes the tables and entities with the project name

  • Fixed substreams init support for unnamed params and topics on log events

v1.3.3

  • Fixed substreams init generated code when dealing with Ethereum ABI events containing array types.

    [!NOTE] For now, the generated code only works with Postgres, an upcoming revision is going to lift that constraint.

v1.3.2

  • Fixed store.has_at Wazero signature which was defined as has_at(storeIdx: i32, ord: i32, key_ptr: i32, key_len: i32) but should have been has_at(storeIdx: i32, ord: i64, key_ptr: i32, key_len: i32).

  • Fixed the local substreams alpha service serve ClickHouse deployment which was failing with a message regarding fork handling.

  • Catch more cases of WASM deterministic errors as InvalidArgument.

  • Added some output-stream info to logs.

v1.3.1

Server

  • Fixed error-passing between tier2 and tier1 (tier1 will not retry sending requests that fail deterministicly to tier2)

  • Tier1 will now schedule a single job on tier2, quickly ramping up to the requested number of workers after 4 seconds of delay, to catch early exceptions

  • "store became too big" is now considered a deterministic error and returns code "InvalidArgument"

v1.3.0

Highlights

  • Support new networks configuration block in substreams.yaml to override modules' params and initial_block. Network can be specified at run-time, avoiding the need for separate spkg files for each chain.

  • [BREAKING CHANGE] Remove the support for the deriveFrom overrides. The imports, along with the new networks feature, should provide a better mechanism to cover the use cases that deriveFrom tried to address.

These changes are all handled in the substreams CLI, applying the necessary changes to the package before sending the requests. The Substreams server endpoints do not need to be upgraded to support it.

Added

  • Added networks field at the top level of the manifest definition, with initialBlock and params overrides for each module. See the substreams.yaml.example file in the repository or https://substreams.streamingfast.io/reference-and-specs/manifests for more details and example usage.

  • The networks params and `initialBlock`` overrides for the chosen network are applied to the module directly before being sent to the server. All network configurations are kept when packing an .spkg file.

  • Added the --network flag for choosing the network on run, gui and alpha service deploy commands. Default behavior is to use the one defined as network in the manifest.

  • Added the --endpoint flag to substreams alpha service serve to specify substreams endpoint to connect to

  • Added endpoints for Antelope chains

  • Command 'substreams info' now shows the params

Removed

  • Removed the handling of the DeriveFrom keyword in manifest, this override feature is going away.

  • Removed the `--skip-package-validation`` option only on run/gui/inspect/info

Changed

  • Added the --params flag to alpha service deploy to apply per-module parameters to the substreams before pushing it.

  • Renamed the --parameters flag to --deployment-params in alpha service deploy, to clarify the intent of those parameters (given to the endpoint, not applied to the substreams modules)

  • Small improvement on substreams gui command: no longer reads the .spkg multiple times with different behavior during its process.

v1.2.0

Client

  • Fixed bug in substreams init with numbers in ABI types

Backend

  • Return the correct GRPC code instead of wrapping it under an "Unknown" error. "Clean shutdown" now returns CodeUnavailable. This is compatible with previous substreams clients like substreams-sql which should retry automatically.

  • Upgraded components to manage the new block encapsulation format in merged-blocks and on the wire required for firehose-core v1.0.0

v1.1.22

alpha service deployments

  • Fix fuzzy matching when endpoint require auth headers

  • Fix panic in "serve" when trying to delete a non-existing deployment

  • Add validation check of substreams package before sending deploy request to server

v1.1.21

Changed

  • Codegen: substreams-database-change to v1.3, properly generates primary key to support chain reorgs in postgres sink.

  • Sink server commands all moved from substreams alpha sink-* to substreams alpha service *

  • Sink server: support for deploying sinks with DBT configuration, so that users can deploy their own DBT models (supported on postgres and clickhouse sinks). Example manifest file segment:

    [...]

sink:
  module: db_out
  type: sf.substreams.sink.sql.v1.Service
  config:
    schema: "./schema.sql"
    wire_protocol_access: true
    postgraphile_frontend:
      enabled: true
    pgweb_frontend:
      enabled: true
    dbt:
      files: "./dbt"
      run_interval_seconds: 60

    where "./dbt" is a folder containing the dbt project.

  • Sink server: added REST interface support for clickhouse sinks. Example manifest file segment:

    [...]

sink:
  module: db_out
  type: sf.substreams.sink.sql.v1.Service
  config:
    schema: "./schema.clickhouse.sql"
    wire_protocol_access: true
    engine: clickhouse
    postgraphile_frontend:
      enabled: false
    pgweb_frontend:
      enabled: false
    rest_frontend:
      enabled: true

Fixed

  • Fix substreams info cli doc field which wasn't printing any doc output

v1.1.20

  • Optimized start of output stream in developer mode when start block is in reversible segment and output module does not have any stores in its dependencies.

  • Fixed bug where the first streamable block of a chain was not processed correctly when the start block was set to the default zero value.

v1.1.19

Changed

  • Codegen: Now generates separate substreams.{target}.yaml files for sql, clickhouse and graphql sink targets.

Added

  • Codegen: Added support for clickhouse in schema.sql

Fixed

  • Fixed metrics for time spent in eth_calls within modules stats (server and GUI)

  • Fixed undo json message in 'run' command

  • Fixed stream ending immediately in dev mode when start/end blocks are both 0.

  • Sink-serve: fix missing output details on docker-compose apply errors

  • Codegen: Fixed pluralized entity created for db_out and graph_out

v1.1.18

Fixed

  • Fixed a regression where start block was not resolved correctly when it was in the reversible segment of the chain, causing the substreams to reprocess a segment in tier 2 instead of linearly in tier 1.

v1.1.17

Fixed

  • Missing decrement on metrics substreams_active_requests

v1.1.16

Added

  • substreams_active_requests and substreams_counter metrics to substreams-tier1

Changed

  • evt_block_time in ms to timestamp in lib.rs, proto definition and schema.sql

v1.1.15

Highlights

  • See those two new features in action in this tutorial

Added

  • Sink configs can now use protobuf annotations (aka Field Options) to determine how the field will be interpreted in substreams.yaml:

    • load_from_file will put the content of the file directly in the field (string and bytes contents are supported).

    • zip_from_folder will create a zip archive and put its content in the field (field type must be bytes).

      Example protobuf definition:

      import "sf/substreams/v1/options.proto";

message HostedPostgresDatabase {
  bytes schema = 1 [ (sf.substreams.v1.options).load_from_file = true ];
  bytes extra_config_files = 2 [ (sf.substreams.v1.options).zip_from_folder = true ];
}

      Example manifest file:

      [...]
network: mainnet

sink:
  module: main:db_out
  type: sf.substreams.sink.sql.v1.Service
  config:
    schema: "./schema.sql"
    wire_protocol_access: true
    postgraphile_frontend:
      enabled: true
    pgweb_frontend:
      enabled: true

  • substreams info command now properly displays the content of sink configs, optionally writing the fields that were bundled from files to disk with --output-sinkconfig-files-path=</some/path>

Changed

  • substreams alpha init renamed to substreams init. It now includes db_out module and schema.sql to support the substreams-sql-sink directly.

  • The override feature has been overhauled. Users may now override an existing substreams by pointing to an override file in run or gui command. This override manifest will have a deriveFrom field which points to the original substreams which is to be overriden. This is useful to port a substreams to one network to another. Example of an override manifest:

    deriveFrom: path/to/mainnet-substreams.spkg #this can also be a remote url

package:
  name: "polygon-substreams"
  version: "100.0.0"

network: polygon

initialBlocks:
  module1: 17500000
params:
  module1: "address=2a75ca72679cf1299936d6104d825c9654489058"

  • The substreams run and substreams gui commands now determine the endpoint from the 'network' field in the manifest if no value is passed in the --substreams-endpoint flag.

  • The endpoint for each network can be set by using an environment variable SUBSTREAMS_ENDPOINTS_CONFIG_<network_name>, ex: SUBSTREAMS_ENDPOINTS_CONFIG_MAINNET=my-endpoint:443

  • The substreams alpha init has been moved to substreams init

Fixed

  • fixed the substreams gui command to correctly compute the stop-block when given a relative value (ex: '-t +10')

v1.1.14

Bug fixes

  • Fixed (bumped) substreams protobuf definitions that get embedded in spkg to match the new progress messages from v1.1.12.

  • Regression fix: fixed a bug where negative start blocks would not be resolved correctly when using substreams run or substreams gui.

  • In the request plan, the process previously panicked when errors related to block number validation occurred. Now the error will be returned to the client.

v1.1.13

Bug fixes

  • If the initial block or start block is less than the first block in the chain, the substreams will now start from the first block in the chain. Previously, setting the initial block to a block before the first block in the chain would cause the substreams to hang.

  • Fixed a bug where the substreams would fail if the start block was set to a future block. The substreams will now wait for the block to be produced before starting.

v1.1.12

Highlights

  • Complete redesign of the progress messages:

    • Tier2 internal stats are aggregated on Tier1 and sent out every 500ms (no more bursts)

    • No need to collect events on client: a single message now represents the current state

    • Message now includes list of running jobs and information about execution stages

    • Performance metrics has been added to show which modules are executing slowly and where the time is spent (eth calls, store operations, etc.)

Upgrading client and server

[!IMPORTANT] The client and servers will both need to be upgraded at the same time for the new progress messages to be parsed:

  • The new Substreams servers will NOT send the old modules field as part of its progress message, only the new running_jobs, modules_stats, stages.

  • The new Substreams clients will NOT be able to decode the old progress information when connecting to older servers.

However, the actual data (and cursor) will work correctly between versions. Only incompatible progress information will be ignored.

CLI

Changed

  • Bumped substreams and substreams-ethereum to latest in substreams alpha init.

  • Improved error message when <module_name> is not received, previously this would lead to weird error message, now, if the input is likely a manifest, the error message will be super clear.

Fixed

  • Fixed compilation errors when tracking some contracts when using substreams alpha init.

Added

  • substreams info now takes an optional second parameter <output-module> to show how the substreams modules can be divided into stages

  • Pack command: added -c flag to allow overriding of certain substreams.yaml values by passing in the path of a yaml file. example yaml contents:

    package:
  name: my_custom_package_name

network: arbitrum-one
initialBlocks:
  module_name_1: 123123123
params:
  mod1: "custom_parameter"

Backend

Removed

  • Removed Config.RequestStats, stats are now always enabled.

v1.1.11

Fixes

  • Added metering of live blocks

v1.1.10

Backend changes

  • Fixed/Removed: jobs would hang when config parameter StateBundleSize was different from SubrequestsSize. The latter has been removed completely: Subrequests size will now always be aligned with bundle size.

  • Auth: added support for continuous authentication via the grpc auth plugin (allowing cutoff triggered by the auth system).

CLI changes

  • Fixed params handling in gui mode

v1.1.9

Backend changes

  • Massive refactoring of the scheduler: prevent excessive splitting of jobs, grouping them into stages when they have the same dependencies. This should reduce the required number of tier2 workers (2x to 3x, depending on the substreams).

  • The tier1 and tier2 config have a new configuration StateStoreDefaultTag, will be appended to the StateStoreURL value to form the final state store URL, ex: StateStoreURL="/data/states" and StateStoreDefaultTag="v2" will make /data/states/v2 the default state store location, while allowing users to provide a X-Sf-Substreams-Cache-Tag header (gated by auth module) to point to /data/states/v1, and so on.

  • Authentication plugin trust can now specify an exclusive list of allowed headers (all lowercase), ex: trust://?allowed=x-sf-user-id,x-sf-api-key-id,x-real-ip,x-sf-substreams-cache-tag

  • The tier2 app no longer has customizable auth plugin (or any Modules), trust will always be used, so that tier can pass down its headers (e.g. X-Sf-Substreams-Cache-Tag). The tier2 instances should not be accessible publicly.

GUI changes

  • Color theme is now adapted to the terminal background (fixes readability on 'light' background)

  • Provided parameters are now shown in the 'Request' tab.

CLI changes

Added

  • alpha init command: replace initialBlock for generated manifest based on contract creation block.

  • alpha init prompt Ethereum chain. Added: Mainnet, BNB, Polygon, Goerli, Mumbai.

Fixed

  • alpha init reports better progress specially when performing ABI & creation block retrieval.

  • alpha init command without contracts fixed Protogen command invocation.

v1.1.8

Backend changes

Added

  • Max-subrequests can now be overridden by auth header X-Sf-Substreams-Parallel-Jobs (note: if your auth plugin is 'trust', make sure that you filter out this header from public access

  • Request Stats logging. When enable it will log metrics associated to a Tier1 and Tier2 request

  • On request, save "substreams.partial.spkg" file to the state cache for debugging purposes.

  • Manifest reader can now read 'partial' spkg files (without protobuf and metadata) with an option.

Fixed

  • Fixed a bug which caused "live" blocks to be sent while the stream previously received block(s) were historic.

CLI changes

Fixed

  • In GUI, module output now shows fields with default values, i.e. 0, "", false

v1.1.7 (https://github.com/streamingfast/substreams/releases/tag/v1.1.7)

Highlights

Now using plugin: buf.build/community/neoeinstein-prost-crate:v0.3.1 when generating the Protobuf Rust mod.rs which fixes the warning that remote plugins are deprecated.

Previously we were using remote: buf.build/prost/plugins/crate:v0.3.1-1. But remote plugins when using https://buf.build (which we use to generate the Protobuf) are now deprecated and will cease to function on July 10th, 2023.

The net effect of this is that if you don't update your Substreams CLI to 1.1.7, on July 10th 2023 and after, the substreams protogen will not work anymore.

v1.1.6 (https://github.com/streamingfast/substreams/releases/tag/v1.1.6)

Backend changes

  • substreams-tier1 and substreams-tier2 are now standalone Apps, to be used as such by server implementations (firehose-ethereum, etc.)

  • substreams-tier1 now listens to Connect protocol, enabling browser-based substreams clients

  • Authentication has been overhauled to take advantage of https://github.com/streamingfast/dauth, allowing the use of a GRPC-based sidecar or reverse-proxy to provide authentication.

  • Metering has been overhauled to take advantage of https://github.com/streamingfast/dmetering plugins, allowing the use of a GRPC sidecar or logs to expose usage metrics.

  • The tier2 logs no longer show a parent_trace_id: the trace_id is now the same as tier1 jobs. Unique tier2 jobs can be distinguished by their stage and segment, corresponding to the output_module_name and startblock:stopblock

CLI changes

  • The substreams protogen command now uses this Buf plugin https://buf.build/community/neoeinstein-prost to generate the Rust code for your Substreams definitions.

  • The substreams protogen command no longer generate the FILE_DESCRIPTOR_SET constant which generates an unsued warning in Rust. We don't think nobody relied on having the FILE_DESCRIPTOR_SET constant generated, but if it's the case, you can provide your own buf.gen.yaml that will be used instead of the generated one when doing substreams protogen.

  • Added -H flag on the substreams run command, to set HTTP Headers in the Substreams request.

Fixed

  • Fixed generated buf.gen.yaml not being deleted when an error occurs while generating the Rust code.

v1.1.5

Highlights

This release fixes data determinism issues. This comes at a 20% performance cost but is necessary for integration with The Graph ecosystem.

Operators

  • When upgrading a substreams server to this version, you should delete all existing module caches to benefit from deterministic output

Added

  • Tier1 now records deterministic failures in wasm, "blacklists" identical requests for 10 minutes (by serving them the same InvalidArgument error) with a forced incremental backoff. This prevents accidental bad actors from hogging tier2 resources when their substreams cannot go passed a certain block.

  • Tier1 now sends the ResolvedStartBlock, LinearHandoffBlock and MaxJobWorkers in SessionInit message for the client and gui to show

  • Substreams CLI can now read manifests/spkg directly from an IPFS address (subgraph deployment or the spkg itself), using ipfs://Qm... notation

Fixed

  • When talking to an updated server, the gui will not overflow on a negative start block, using the newly available resolvedStartBlock instead.

  • When running in development mode with a start-block in the future on a cold cache, you would sometimes get invalid "updates" from the store passed down to your modules that depend on them. It did not impact the caches but caused invalid output.

  • The WASM engine was incorrectly reusing memory, preventing deterministic output. It made things go faster, but at the cost of determinism. Memory is now reset between WASM executions on each block.

  • The GUI no longer panics when an invalid output-module is given as argument

Changed

  • Changed default WASM engine from wasmtime to wazero, use SUBSTREAMS_WASM_RUNTIME=wasmtime to revert to prior engine. Note that wasmtime will now run a lot slower than before because resetting the memory in wasmtime is more expensive than in wazero.

  • Execution of modules is now done in parallel within a single instance, based on a tree of module dependencies.

  • The substreams gui and substreams run now accept commas inside a param value. For example: substreams run --param=p1=bar,baz,qux --param=p2=foo,baz. However, you can no longer pass multiple parameters using an ENV variable, or a .yaml config file.

v1.1.4

HIGHLIGHTS

  • Module hashing changed to fix cache reuse on substreams use imported modules

  • Memory leak fixed on rpc-enabled servers

  • GUI more responsive

Fixed

  • BREAKING: The module hashing algorithm wrongfully changed the hash for imported modules, which made it impossible to leverage caches when composing new substreams off of imported ones.

    • Operationally, if you want to keep your caches, you will need to copy or move the old hashes to the new ones.

      • You can obtain the prior hashes for a given spkg with: substreams info my.spkg, using a prior release of the substreams

      • With a more recent substreams release, you can obtain the new hashes with the same command.

      • You can then cp or mv the caches for each module hash.

    • You can also ignore this change. This will simply invalidate your cache.

  • Fixed a memory leak where "PostJobHooks" were not always called. These are used to hook in rpc calls in Ethereum chain. They are now always called, even if no block has been processed (can be called with nil value for the clock)

  • Jobs that fail deterministically (during WASM execution) on tier2 will fail faster, without retries from tier1.

  • substreams gui command now handles params flag (it was ignored)

  • Substeams GUI responsiveness improved significantly when handling large payloads

Added

Known issues

v1.1.3

Highlights

This release contains fixes for race conditions that happen when multiple request tries to sync the same range using the same .spkg. Those fixes will avoid weird state error at the cost of duplicating work in some circumstances. A future refactor of the Substreams engine scheduler will come later to fix those inefficiencies.

Operators, please read the operators section for upgrade instructions.

Operators

Note This upgrade procedure is applies if your Substreams deployment topology includes both tier1 and tier2 processes. If you have defined somewhere the config value substreams-tier2: true, then this applies to you, otherwise, if you can ignore the upgrade procedure.

This release includes a small change in the internal RPC layer between tier1 processes and tier2 processes. This change requires an ordered upgrade of the processes to avoid errors.

The components should be deployed in this order:

  1. Deploy and roll out tier1 processes first

  2. Deploy and roll out tier2 processes in second

If you upgrade in the wrong order or if somehow tier2 processes start using the new protocol without tier1 being aware, user will end up with backend error(s) saying that some partial file are not found. Those will be resolved only when tier1 processes have been upgraded successfully.

Fixed

  • Fixed a race when multiple Substreams request execute on the same .spkg, it was causing races between the two executors.

  • GUI: fixed an issue which would slow down message consumption when progress page was shown in ascii art "bars" mode

  • GUI: fixed the display of blocks per second to represent actual blocks, not messages count

Changed

  • [binary]: Commands substreams <...> that fails now correctly return an exit code 1.

  • [library]: The manifest.NewReader signature changed and will now return a *Reader, error (previously *Reader).

Added

  • [library]: The manifest.Reader gained the ability to infer the path if provided with input "" based on the current working directory.

  • [library]: The manifest.Reader gained the ability to infer the path if provided with input that is a directory.

v1.1.2

Highlights

This release contains bug fixes and speed/scaling improvements around the Substreams engine. It also contains few small enhancements for substreams gui.

This release contains an important bug that could have generated corrupted store state files. This is important for developers and operators.

Sinkers & Developers

The store state files will be fully deleted on the Substreams server to start fresh again. The impact for you as a developer is that Substreams that were fully synced will now need to re-generate from initial block the store's state. So you might see long delays before getting a new block data while the Substreams engine is re-computing the store states from scratch.

Operators

You need to clear the state store and remove all the files that are stored under substreams-state-store-url flag. You can also make it point to a brand new folder and delete the old one after the rollout.

Fixed

  • Fix a bug where not all extra modules would be sent back on debug mode

  • Fixed a bug in tier1 that could result in corrupted state files when getting close to chain HEAD

  • Fixed some performance and stalling issues when using GCS for blocks

  • Fixed storage logs not being shown properly

  • GUI: Fixed panic race condition

  • GUI: Cosmetic changes

Added

  • GUI: Added traceID

v1.1.1

Highlights

This release introduces a new RPC protocol and the old one has been removed. The new RPC protocol is in a new Protobuf package sf.substreams.rpc.v2 and it drastically changes how chain re-orgs are signaled to the user. Here the highlights of this release:

  • Getting rid of undo payload during re-org

  • substreams gui Improvements

  • Substreams integration testing

  • Substreams Protobuf definitions updated

Getting rid of undo payload during re-org

Previously, the GRPC endpoint sf.substreams.v1.Stream/Blocks would send a payload with the corresponding "step", NEW or UNDO.

Unfortunately, this led to some cases where the payload could not be deterministically generated for old blocks that had been forked out, resulting in a stalling request, a failure, or in some worst cases, incomplete data.

The new design, under sf.substreams.rpc.v2.Stream/Blocks, takes care of these situations by removing the 'step' component and using these two messages types:

  • sf.substreams.rpc.v2.BlockScopedData when chain progresses, with the payload

  • sf.substreams.rpc.v2.BlockUndoSignal during a reorg, with the last valid block number + block hash

The client now has the burden of keeping the necessary means of performing the undo actions (ex: a map of previous values for each block). The BlockScopedData message now includes the final_block_height to let you know when this "undo data" can be discarded.

With these changes, a substreams server can even handle a cursor for a block that it has never seen, provided that it is a valid cursor, by signaling the client to revert up to the last known final block, trading efficiency for resilience in these extreme cases.

substreams gui Improvements

  • Added key 'f' shortcut for changing display encoding of bytes value (hex, pruned string, base64)

  • Added jq search mode (hit / twice). Filters the output with the jq expression, and applies the search to match all blocks.

  • Added search history (with up/down), similar to less.

  • Running a search now applies it to all blocks, and highlights the matching ones in the blocks bar (in red).

  • Added O and P, to jump to prev/next block with matching search results.

  • Added module search with m, to quickly switch from module to module.

Substreams integration testing

Added a basic Substreams testing framework that validates module outputs against expected values. The testing framework currently runs on substreams run command, where you can specify the following flags:

  • test-file Points to a file that contains your test specs

  • test-verbose Enables verbose mode while testing.

The test file, specifies the expected output for a given substreams module at a given block.

Substreams Protobuf definitions updated

We changed the Substreams Protobuf definitions making a major overhaul of the RPC communication. This is a breaking change for those consuming Substreams through gRPC.

Note The is no breaking changes for Substreams developers regarding your Rust code, Substreams manifest and Substreams package.

  • Removed the Request and Response messages (and related) from sf.substreams.v1, they have been moved to sf.substreams.rpc.v2. You will need to update your usage if you were consuming Substreams through gRPC.

  • The new Request excludes fields and usages that were already deprecated, like using multiple module_outputs.

  • The Response now contains a single module output

  • In development mode, the additional modules output can be inspected under debug_map_outputs and debug_store_outputs.

Separating Tier1 vs Tier2 gRPC protocol (for Substreams server operators)

Now that the Blocks request has been moved from sf.substreams.v1 to sf.substreams.rpc.v2, the communication between a substreams instance acting as tier1 and a tier2 instance that performs the background processing has also been reworked, and put under sf.substreams.internal.v2.Stream/ProcessRange. It has also been stripped of parameters that were not used for that level of communication (ex: cursor, logs...)

Fixed

  • The final_blocks_only: true on the Request was not honored on the server. It now correctly sends only blocks that are final/irreversible (according to Firehose rules).

  • Prevent substreams panic when requested module has unknown value for "type"

Added

  • The substreams run command now has flag --final-blocks-only

1.0.3

This should be the last release before a breaking change in the API and handling of the reorgs and UNDO messages.

Highlights

  • Added support for resolving a negative start-block on server

  • CHANGED: The run command now resolves a start-block=-1 from the head of the chain (as supported by the servers now). Prior to this change, the -1 value meant the 'initialBlock' of the requested module. The empty string is now used for this purpose,

  • GUI: Added support for search, similar to less, with /.

  • GUI: Search and output offset is conserved when switching module/block number in the "Output" tab.

  • Library: protobuf message descriptors now exposed in the manifest/ package. This is something useful to any sink that would need to interpret the protobuf messages inside a Package.

  • Added support for resolving a negative start-block on server (also added to run command)

  • The run and gui command no longer resolve a start-block=-1 to the 'initialBlock' of the requested module. To get this behavior, simply assign an empty string value to the flag start-block instead.

  • Added support for search within the Substreams gui output view. Usage of search within output behaves similar to the less command, and can be toggled with "/".

1.0.2

1.0.1

Fixed

  • Fixed "undo" messages incorrectly contained too many module outputs (all modules, with some duplicates).

  • Fixed status bar message cutoff bug

  • Fixed substreams run when manifest contains unknown attributes

  • Fixed bubble tea program error when existing the run command

1.0.0

Highlights

  • Added command substreams gui, providing a terminal-based GUI to inspect the streamed data. Also adds --replay support, to save a stream to replay.log and load it back in the UI later. You can use it as you would substreams run. Feedback welcome.

  • Modified command substreams protogen, defaulting to generating the mod.rs file alongside the rust bindings. Also added --generate-mod-rs flag to toggle mod.rs generation.

  • Added support for module parameterization. Defined in the manifest as:

module:
  name: my_module
  inputs:
    params: string
  ...

params:
  my_module: "0x123123"
  "imported:module": override value from imported module

and on the command-line as:

  • substreams run -p module=value -p "module2=other value" ...

Servers need to be updated for packages to be able to be consumed this way.

This change keeps backwards compatibility. Old Substreams Packages will still work the same, with no changes to module hashes.

Added

  • Added support for {version} template in --output-file flag value on substreams pack.

  • Added fuel limit to wasm execution as a server-side option, preventing wasm process from running forever.

  • Added 'Network' and 'Sink{Type, Module, Config}' fields in the manifest and protobuf definition for future bundling of substreams sink definitions within a substreams package.

0.2.0

Highlights

  • Improved execution speed and module loading speed by bumping to WASM Time to version 4.0.

  • Improved developer experience on the CLI by making the <manifest> argument optional.

    The CLI when <manifest> argument is not provided will now look in the current directory for a substreams.yaml file and is going to use it if present. So if you are in your Substreams project and your file is named substreams.yaml, you can simply do substreams pack, substreams protogen, etc.

    Moreover, we added to possibility to pass a directory containing a substreams.yaml directly so substreams pack path/to/project would work as long as path/to/project contains a file named substreams.yaml.

  • Fixed a bug that was preventing production mode to complete properly when using a bounded block range.

  • Improved overall stability of the Substreams engine.

Operators Notes

  • Breaking Config values substreams-stores-save-interval and substreams-output-cache-save-interval have been merged together into substreams-cache-save-interval in the firehose-<chain> repositories. Refer to chain specific firehose-<chain> repository for further details.

Added

  • The <manifest> can point to a directory that contains a substreams.yaml file instead of having to point to the file directly.

  • The <manifest> parameter is now optional in all commands requiring it.

Fixed

  • Fixed valuetype mismatch for stores

  • Fixed production mode not completing when block range was specified

  • Fixed tier1 crashing due to missing context canceled check.

  • Fixed some code paths where locking could have happened due to incorrect checking of context cancellation.

  • Request validation for blockchain's input type is now made only against the requested module it's transitive dependencies.

Updated

  • Updated WASM Time library to 4.0.0 leading to improved execution speed.

Changed

  • Remove distinction between output-save-interval and store-save-interval.

  • substreams init has been moved under substreams alpha init as this is a feature included by mistake in latest release that should not have been displayed in the main list of commands.

  • substreams codegen has been moved under substreams alpha codegen as this is a feature included by mistake in latest release that should not have been displayed in the main list of commands.

0.1.0

This upcoming release is going to bring significant changes on how Substreams are developed, consumed and speed of execution. Note that there is no breaking changes related to your Substreams' Rust code, only breaking changes will be about how Substreams are run and available features/flags.

Here the highlights of elements that will change in next release:

In this rest of this post, we are going to go through each of them in greater details and the implications they have for you. Full changelog is available after.

Warning Operators, refer to Operators Notes section for specific instructions of deploying this new version.

Production vs development mode

We introduce an execution mode when running Substreams, either production mode or development mode. The execution mode impacts how the Substreams get executed, specifically:

  • The time to first byte

  • The module logs and outputs sent back to the client

  • How parallel execution is applied through the requested range

The difference between the modes are:

  • In development mode, the client will receive all the logs of the executed modules. In production mode, logs are not available at all.

  • In development mode, module's are always re-executed from request's start block meaning now that logs will always be visible to the user. In production mode, if a module's output is found in cache, module execution is skipped completely and data is returned directly.

  • In development mode, only backward parallel execution can be effective. In production mode, both backward parallel execution and forward parallel execution can be effective. See Enhanced parallel execution section for further details about parallel execution.

  • In development mode, every module's output is returned back in the response but only root module is displayed by default in substreams CLI (configurable via a flag). In production mode, only root module's output is returned.

  • In development mode, you may request specific store snapshot that are in the execution tree via the substreams CLI --debug-modules-initial-snapshots flag. In production mode, this feature is not available.

The execution mode is specified at that gRPC request level and is the default mode is development. The substreams CLI tool being a development tool foremost, we do not expect people to activate production mode (-p) when using it outside for maybe testing purposes.

If today's you have sink code making the gRPC request yourself and are using that for production consumption, ensure that field production_mode in your Substreams request is set to true. StreamingFast provided sink like substreams-sink-postgres, substreams-sink-files and others have already been updated to use production_mode by default.

Final note, we recommend to run the production mode against a compiled .spkg file that should ideally be released and versioned. This is to ensure stable modules' hashes and leverage cached output properly.

Single module output

We now only support 1 output module when running a Substreams, while prior this release, it was possible to have multiple ones.

  • Only a single module can now be requested, previous version allowed to request N modules.

  • Only map module can now be requested, previous version allowed map and store to be requested.

  • InitialSnapshots is now forbidden in production mode and still allowed in development mode.

  • In development mode, the server sends back output for all executed modules (by default the CLI displays only requested module's output).

Note We added output_module to the Substreams request and kept output_modules to remain backwards compatible for a while. If an output_module is specified we will honor that module. If not we will check output_modules to ensure there is only 1 output module. In a future release, we are going to remove output_modules altogether.

With the introduction of development vs production mode, we added a change in behavior to reduce frictions this changes has on debugging. Indeed, in development mode, all executed modules's output will be sent be to the user. This includes the requested output module as well as all its dependencies. The substreams CLI has been adjusted to show only the output of the requested output module by default. The new substreams CLI flag -debug-modules-output can be used to control which modules' output is actually displayed by the CLI.

Migration Path If you are currently requesting more than one module, refactor your Substreams code so that a single map module aggregates all the required information from your different dependencies in one output.

Output module must be of type map

It is now forbidden to request a store module as the output module of the Substreams request, the requested output module must now be of kind map. Different factors have motivated this change:

  • Recently we have seen incorrect usage of store module. A store module was not intended to be used as a persistent long term storage, store modules were conceived as a place to aggregate data for later steps in computation. Using it as a persistent storage make the store unmanageable.

  • We had always expected users to consume a map module which would return data formatted according to a final sink spec which will then permanently store the extracted data. We never envisioned store to act as long term storage.

  • Forward parallel execution does not support a store as its last step.

Migration Path If you are currently using a store module as your output store. You will need to create a map module that will have as input the deltas of said store module, and return the deltas.

Examples

Let's assume a Substreams with these dependencies: [block] --> [map_pools] --> [store_pools] --> [map_transfers]

  • Running substreams run substreams.yaml map_transfers will only print the outputs and logs from the map_transfers module.

  • Running substreams run substreams.yaml map_transfers --debug-modules-output=map_pools,map_transfers,store_pools will print the outputs of those 3 modules.

InitialSnapshots is now a development mode feature only

Now that a store cannot be requested as the output module, the InitialSnapshots did not make sense anymore to be available. Moreover, we have seen people using it to retrieve the initial state and then continue syncing. While it's a fair use case, we always wanted people to perform the synchronization using the streaming primitive and not by using store as long term storage.

However, the InitialSnapshots is a useful tool for debugging what a store contains at a given block. So we decided to keep it in development mode only where you can request the snapshot of a store module when doing your request. In the Substreams' request/response, initial_store_snapshot_for_modules has been renamed to debug_initial_store_snapshot_for_modules, snapshot_data to debug_snapshot_data and snapshot_complete to debug_snapshot_complete.

Migration Path If you were relying on InitialSnapshots feature in production. You will need to create a map module that will have as input the deltas of said store module, and then synchronize the full state on the consuming side.

Examples

Let's assume a Substreams with these dependencies: [block] --> [map_pools] --> [store_pools] --> [map_transfers]

  • Running substreams run substreams.yaml map_transfers -s 1000 -t +5 --debug-modules-initial-snapshot=store_pools will print all the entries in store_pools at block 999, then continue with outputs and logs from map_transfers in blocks 1000 to 1004.

Enhanced parallel execution

There are 2 ways parallel execution can happen either backward or forward.

Backward parallel execution consists of executing in parallel block ranges from the module's start block up to the start block of the request. If the start block of the request matches module's start block, there is no backward parallel execution to perform. Also, this is happening only for dependencies of type store which means that if you depends only on other map modules, no backward parallel execution happens.

Forward parallel execution consists of executing in parallel block ranges from the start block of the request up to last known final block (a.k.a the irreversible block) or the stop block of the request, depending on which is smaller. Forward parallel execution significantly improves the performance of the Substreams as we execute your module in advanced through the chain history in parallel. What we stream you back is the cached output of your module's execution which means essentially that we stream back to you data written in flat files. This gives a major performance boost because in almost all cases, the data will be already for you to consume.

Forward parallel execution happens only in production mode is always disabled when in development mode. Moreover, since we read back data from cache, it means that logs of your modules will never be accessible as we do not store them.

Backward parallel execution still occurs in development and production mode. The diagram below gives details about when parallel execution happen.

You can see that in production mode, parallel execution happens before the Substreams request range as well as within the requested range. While in development mode, we can see that parallel execution happens only before the Substreams request range, so between module's start block and start block of requested range (backward parallel execution only).

Operators Notes

The state output format for map and store modules has changed internally to be more compact in Protobuf format. When deploying this new version, previous existing state files should be deleted or deployment updated to point to a new store location. The state output store is defined by the flag --substreams-state-store-url flag parameter on chain specific binary (i.e. fireeth).

Library

  • Added production_mode to Substreams Request

  • Added output_module to Substreams Request

CLI

  • Fixed Ctrl-C not working directly when in TUI mode.

  • Added Trace ID printing once available.

  • Added command substreams tools analytics store-stats to get statistic for a given store.

  • Added --debug-modules-output (comma-separated module names) (unavailable in production mode).

  • Breaking Renamed flag --initial-snapshots to --debug-modules-initial-snapshots (comma-separated module names) (unavailable in production mode).

0.0.21

  • Moved Rust modules to github.com/streamingfast/substreams-rs

Library

  • Gained significant execution time improvement when saving and loading stores, during the squashing process by leveraging vtprotobuf

  • Added XDS support for tier 2s

  • Added intrinsic support for type bigdecimal, will deprecate bigfloat

  • Significant improvements in code-coverage and full integration tests.

CLI

  • Added substreams tools proxy <package> subcommand to allow calling substreams with a pre-defined package easily from a web browser using bufbuild/connect-web

  • Lowered GRPC client keep alive frequency, to prevent "Too Many Pings" disconnection issue.

  • Added a fast failure when attempting to connect to an unreachable substreams endpoint.

  • CLI is now able to read .spkg from gs://, s3:// and az:// URLs, the URL format must be supported by our dstore library).

  • Command substreams pack is now restricted to local manifest file.

  • Added command substreams tools module to introspect a store state in storage.

  • Made changes to allow for substreams CLI to run on Windows OS (thanks @robinbernon).

  • Added flag --output-file <template> to substreams pack command to control where the .skpg is written, {manifestDir} and {spkgDefaultName} can be used in the template value where {manifestDir} resolves to manifest's directory and {spkgDefaultName} is the pre-computed default name in the form <name>-<version> where <name> is the manifest's "package.name" value (_ values in the name are replaced by -) and <version> is package.version value.

  • Fixed relative path not resolved correctly against manifest's location in protobuf.files list.

  • Fixed relative path not resolved correctly against manifest's location in binaries list.

  • substreams protogen <package> --output-path <path> flag is now relative to <package> if <package> is a local manifest file ending with .yaml.

  • Endpoint's port is now validated otherwise when unspecified, it creates an infinite 'Connecting...' message that will never resolves.

0.0.20

CLI

  • Fixed error when importing http/https .spkg files in imports section.

0.0.19

New updatePolicy append, allows one to build a store that concatenates values and supports parallelism. This affects the server, the manifest format (additive only), the substreams crate and the generated code therein.

Rust API

  • Store APIs methods now accept key of type AsRef<str> which means for example that both String an &str are accepted as inputs in:

    • StoreSet::set

    • StoreSet::set_many

    • StoreSet::set_if_not_exists

    • StoreSet::set_if_not_exists_many

    • StoreAddInt64::add

    • StoreAddInt64::add_many

    • StoreAddFloat64::add

    • StoreAddFloat64::add_many

    • StoreAddBigFloat::add

    • StoreAddBigFloat::add_many

    • StoreAddBigInt::add

    • StoreAddBigInt::add_many

    • StoreMaxInt64::max

    • StoreMaxFloat64::max

    • StoreMaxBigInt::max

    • StoreMaxBigFloat::max

    • StoreMinInt64::min

    • StoreMinFloat64::min

    • StoreMinBigInt::min

    • StoreMinBigFloat::min

    • StoreAppend::append

    • StoreAppend::append_bytes

    • StoreGet::get_at

    • StoreGet::get_last

    • StoreGet::get_first

  • Low-level state methods now accept key of type AsRef<str> which means for example that both String an &str are accepted as inputs in:

    • state::get_at

    • state::get_last

    • state::get_first

    • state::set

    • state::set_if_not_exists

    • state::append

    • state::delete_prefix

    • state::add_bigint

    • state::add_int64

    • state::add_float64

    • state::add_bigfloat

    • state::set_min_int64

    • state::set_min_bigint

    • state::set_min_float64

    • state::set_min_bigfloat

    • state::set_max_int64

    • state::set_max_bigint

    • state::set_max_float64

    • state::set_max_bigfloat

  • Bumped prost (and related dependencies) to ^0.11.0

CLI

  • Environment variables are now accepted in manifest's imports list.

  • Environment variables are now accepted in manifest's protobuf.importPaths list.

  • Fixed relative path not resolved correctly against manifest's location in imports list.

  • Changed the output modes: module-* modes are gone and become the format for jsonl and json. This means all printed outputs are wrapped to provide the module name, and other metadata.

  • Added --initial-snapshots (or -i) to the run command, which will dump the stores specified as output modules.

  • Added color for ui output mode under a tty.

  • Added some request validation on both client and server (validate that output modules are present in the modules graph)

Service

  • Added support to serve the initial snapshot

v0.0.13

CLI

  • Changed substreams manifest info -> substreams info

  • Changed substreams manifest graph -> substreams graph

  • Updated usage

Service

  • Multiple fixes to boundaries

v0.0.12

substreams server

  • Various bug fixes around store and parallel execution.

substreams CLI

  • Fix null pointer exception at the end of CLI run in some cases.

  • Do log last error when the CLI exit with an error has the error is already printed to the user and it creates a weird behavior.

v0.0.11

substreams Docker

  • Ensure arguments can be passed to Docker built image.

v0.0.10-beta

substreams server

  • Various bug fixes around store and parallel execution.

  • Fixed logs being repeated on module with inputs that was receiving nothing.

v0.0.9-beta

substreams crate

  • Added substreams::hex wrapper around hex_literal::hex macro

substreams CLI

  • Added substreams run -o ui|json|jsonl|module-json|module-jsonl.

Server

  • Fixed a whole bunch of issues, in parallel processing. More stable caching. See chain-specific releases.

v0.0.8-beta

  • Fixed substreams crate usage from tagged version published on crates.io.

v0.0.7-beta

  • Changed startBlock to initialBlock in substreams.yaml manifests.

  • code: is now defined in the binaries section of the manifest, instead of in each module. A module can select which binary with the binary: field on the Module definition.

  • Added substreams inspect ./substreams.yaml or inspect some.spkg to see what's inside. Requires protoc to be installed (which you should have anyway).

  • Added command substreams protogen that writes a temporary buf.gen.yaml and generates Rust structs based on the contents of the provided manifest or package.

  • Added substreams::handlers macros to reduce boilerplate when create substream modules.

    substreams::handlers::map is used for the handlers corresponding to modules of type map. Modules of type map should return a Result where the error is of type Error

    /// Map module example
#[substreams::handlers::map]
pub fn map_module_func(blk: eth::Block) -> Result<erc721::Transfers, Error> {
     ...
}

    substreams::handlers::store is used for the handlers corresponding to modules of type store. Modules of type store should have no return value.

    /// Map module example
#[substreams::handlers::store]
pub fn store_module(transfers: erc721::Transfers, s: store::StoreAddInt64, pairs: store::StoreGet, tokens: store::StoreGet) {
      ...
}

v0.0.6-beta

  • Implemented packages (see docs).

  • Added substreams::Hex wrapper type to more easily deal with printing and encoding bytes to hexadecimal string.

  • Added substreams::log::info!(...) and substreams::log::debug!(...) supporting formatting arguments (acts like println!() macro).

  • Added new field logs_truncated that can be used to determined if logs were truncated.

  • Augmented logs truncation limit to 128 KiB per module per block.

  • Updated substreams run to properly report module progress error.

  • When a module WASM execution error out, progress with failure logs is now returned before closing the substreams connection.

  • The API token is not passed anymore if the connection is using plain text option --plaintext.

  • The -c (or --compact-output) can be used to print JSON as a single compact line.

  • The --stop-block flag on substream run can be defined as +1000 to stream from start block + 1000.

v0.0.5-beta3

  • Added Dockerfile support.

v0.0.5-beta2

Client

  • Improved defaults for --proto-path and --proto, using globs.

  • WASM file paths in substreams.yaml manifests now resolve relative to the location of the yaml file.

  • Added substreams manifest package to create .pb packages to simplify querying using other languages. See the python example.

  • Added substreams manifest graph to show the Mermaid graph alone.

  • Improved mermaid graph layout.

  • Removed native Go code support for now.

Server

  • Always writes store snapshots, each 10,000 blocks.

  • A few tools to manage partial snapshots under substreams tools

v0.0.5-beta

First chain-agnostic release. THIS IS BETA SOFTWARE. USE AT YOUR OWN RISK. WE PROVIDE NO BACKWARDS COMPATIBILITY GUARANTEES FOR THIS RELEASE.

See https://github.com/streamingfast/substreams for usage docs..

  • Removed local command. See README.md for instructions on how to run locally now. Build sfeth from source for now.

  • Changed the remote command to run.

  • Changed run command's --substreams-api-key-envvar flag to --substreams-api-token-envvar, and its default value is changed from SUBSTREAMS_API_KEY to SUBSTREAMS_API_TOKEN. See README.md to learn how to obtain such tokens.

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