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feat(storage): add full object checksum validation for grpc flow#13265

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add-cumulative-hasher-grpc-flow
Jun 17, 2026
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feat(storage): add full object checksum validation for grpc flow#13265
Dhriti07 merged 10 commits into
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add-cumulative-hasher-grpc-flow

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Adding full object checksum for grpc flow

Refer to: go/full_checksum_java

@Dhriti07 Dhriti07 requested review from a team as code owners May 25, 2026 15:09

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Code Review

This pull request introduces cumulative checksum validation for full object reads in the GapicUnbufferedReadableByteChannel. It wraps the existing hasher in a CumulativeHasher when a read starts at offset 0 and triggers validation once the end of the stream is reached. The update includes several new test cases to verify validation behavior across different scenarios, such as multi-chunk reads and ranged reads. Review feedback suggests optimizing the implementation by only instantiating the CumulativeHasher when no read limit is specified, thereby avoiding unnecessary overhead for ranged reads where validation is skipped.

Comment on lines +95 to +97
this.hasher = (req.getReadOffset() == 0)
? new CumulativeHasher(hasher, 0, req.getReadLimit() <= 0 ? OptionalLong.empty() : OptionalLong.of(req.getReadLimit()))
: hasher;

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medium

The CumulativeHasher is currently instantiated for any read starting at offset 0, even if a readLimit is provided. However, the test case validateCumulativeChecksum_skippedForRangedRead demonstrates that validation is skipped when a limit is present. To avoid unnecessary object allocation and wrapping overhead for ranged reads, the CumulativeHasher should only be instantiated when both the offset is 0 and no limit is specified (i.e., a full object read).

Suggested change
this.hasher = (req.getReadOffset() == 0)
? new CumulativeHasher(hasher, 0, req.getReadLimit() <= 0 ? OptionalLong.empty() : OptionalLong.of(req.getReadLimit()))
: hasher;
this.hasher = (req.getReadOffset() == 0 && req.getReadLimit() <= 0)
? new CumulativeHasher(hasher, 0, OptionalLong.empty())
: hasher;

@Dhriti07 Dhriti07 requested a review from ShreyasSinha May 29, 2026 04:32
ShreyasSinha
ShreyasSinha previously approved these changes Jun 16, 2026
Base automatically changed from add-cumulative-hasher to main June 16, 2026 11:00
@Dhriti07 Dhriti07 requested a review from a team as a code owner June 16, 2026 11:00
@Dhriti07 Dhriti07 added the kokoro:force-run Add this label to force Kokoro to re-run the tests. label Jun 16, 2026
@yoshi-kokoro yoshi-kokoro removed the kokoro:force-run Add this label to force Kokoro to re-run the tests. label Jun 16, 2026
@Dhriti07 Dhriti07 requested a review from ShreyasSinha June 17, 2026 06:19
@Dhriti07 Dhriti07 dismissed ShreyasSinha’s stale review June 17, 2026 06:20

Added retry related changes in the PR. Dismissing existing review to get a complete review with the retry related changes

@Dhriti07 Dhriti07 merged commit a5ba606 into main Jun 17, 2026
184 checks passed
@Dhriti07 Dhriti07 deleted the add-cumulative-hasher-grpc-flow branch June 17, 2026 09:33
lqiu96 pushed a commit that referenced this pull request Jun 30, 2026
)

Adding full object checksum for grpc flow

Refer to: go/full_checksum_java

---------

Co-authored-by: Dhriti Chopra <[email protected]>
lqiu96 pushed a commit that referenced this pull request Jul 7, 2026
🤖 I have created a release *beep* *boop*
---


<details><summary>1.88.0</summary>

##
[1.88.0](v1.87.1...v1.88.0)
(2026-07-06)


### Features

* **auth:** Add support for Regional Access Boundaries
([#13499](#13499))
([b721e43](b721e43))
* automate libraries-bom tag and release creation on release publish
([#13655](#13655))
([7a7e2ff](7a7e2ff))
* **bigquery-jdbc:** add `EnableProjectDiscovery` connection property
for metadata methods
([#13344](#13344))
([ab9669a](ab9669a))
* **bigquery-jdbc:** migrate statement execution thread tracking to
connection-scoped executor
([#13454](#13454))
([341e51a](341e51a))
* **bigquery-jdbc:** respect standard JVM trustStore properties by
default
([#13435](#13435))
([7af3224](7af3224))
* **bigquery-jdbc:** support connection-scoped executor isolation and
dynamic queue warnings
([#13413](#13413))
([79e26b8](79e26b8))
* **bigquery:** add internal listProjects API to core client
([#13429](#13429))
([3580407](3580407))
* **bigtable:** route point read rows to shim
([#13542](#13542))
([2c7e5f5](2c7e5f5))
* **deps:** add jspecify to shared dependencies
([#13412](#13412))
([582053d](582053d))
* enable self-signed JWTs by default in ServiceOptions
([#13338](#13338))
([110d2b7](110d2b7))
* **gapic-generator:** Add NullMarked annotation to generated classes
([#13517](#13517))
([825dadd](825dadd))
* **google/cloud/agentregistry/v1:** onboard a new library
([#13509](#13509))
([6728816](6728816))
* scale up connection worker pool based on latency
([#13384](#13384))
([eb379b3](eb379b3))
* **spanner:** add settings for gRCP keep-alive
([#13643](#13643))
([9d78307](9d78307))
* **spanner:** auth login support for Spanner Omni endpoints
([#13470](#13470))
([55930b4](55930b4))
* **storage:** add checksum validation in the json read channel
([#13270](#13270))
([872d7b7](872d7b7))
* **storage:** add checksum validation on json read paths
([#13269](#13269))
([396b042](396b042))
* **storage:** add full object checksum validation for bidi flow
([#13266](#13266))
([9113d80](9113d80))
* **storage:** add full object checksum validation for grpc flow
([#13265](#13265))
([a5ba606](a5ba606))
* **storage:** Adding CumulativeHasher wrapper class for Full object …
([#13239](#13239))
([bd40324](bd40324))
* **storage:** adding disabling option for bidi reads
([#13506](#13506))
([591cae0](591cae0))
* **storage:** log additional bytes received from GCS in read path
([#13427](#13427))
([9492aa2](9492aa2))
* **storage:** update compose sample to support deleteSourceObjects
option
([#13493](#13493))
([50a8658](50a8658))
* use self-signed JWTs in Spanner MutableCredentials
([#13381](#13381))
([29543a2](29543a2))


### Bug Fixes

* Add logging-logback to gapic-libraries-bom
([#13663](#13663))
([512e370](512e370))
* **auth:** Fix UserCredentials serialization clientSecret leak
([#13465](#13465))
([2d9d01c](2d9d01c))
* **auth:** handle missing APPDATA on Windows gracefully
([#13471](#13471))
([77e84a9](77e84a9)),
closes
[#12565](#12565)
* **bigquery-jdbc:** add proper version to BigQueryDriver
([#13294](#13294))
([9fd84fc](9fd84fc))
* **bigquery-jdbc:** avoid rollback on statement close in manual commit
mode
([#13503](#13503))
([79bbee1](79bbee1))
* **bigquery-jdbc:** correct `FilterTablesOnDefaultDataset` fallback
logic
([#13625](#13625))
([f7eb23d](f7eb23d))
* **bigquery-jdbc:** ensure largeResults are handled in
PreparedStatement
([#13496](#13496))
([d3e7a19](d3e7a19))
* **bigquery-jdbc:** ensure test uses unique dataset & cleans up
([#13587](#13587))
([a6bb362](a6bb362))
* **bigquery-jdbc:** explicitly set location when available for
temporary dataset
([#13508](#13508))
([40cd0a7](40cd0a7))
* **bigquery-jdbc:** propagate connection proxy settings to auth library
([#13539](#13539))
([87dda5d](87dda5d))
* **bigquery-jdbc:** shade org.slf4j
([#13547](#13547))
([7ef1312](7ef1312))
* **bigquery-jdbc:** update format validation tests to create tables for
the test
([#13588](#13588))
([4bb3a61](4bb3a61))
* **bigquery-jdbc:** update Maven Central artifact link in the README
([#13563](#13563))
([8707a65](8707a65))
* **bigquery:** retry cancel job and routine creation on transient HTTP
5xx errors
([#13416](#13416))
([35eb041](35eb041))
* **bigquery:** route JOB_CREATION_REQUIRED through fast query path
([#13437](#13437))
([64cde7f](64cde7f))
* **bigquery:** Update fast query path to allow jobTimeoutMs in the
request
([#13502](#13502))
([1a6f4d5](1a6f4d5))
* **bigtable:** honour session_load override when server-returned
session_load is 0
([#13629](#13629))
([b56f9b8](b56f9b8))
* **bqjdbc:** pass rowsInPage with TableResult
([#13238](#13238))
([203a91e](203a91e))
* **ci:** build dependencies before convergence check
([#13638](#13638))
([9de3209](9de3209))
* **ci:** ignore SNAPSHOT suffix in flatten-plugin check
([#13639](#13639))
([bb65627](bb65627))
* **ci:** run root install in dependency convergence check
([#13666](#13666))
([86d35e4](86d35e4))
* **ci:** skip existing-versions-check for gapic-generator-java-root
([#13590](#13590))
([a1f3b8a](a1f3b8a))
* **datastore:** Configure TraceExporter with Datastore credentials in
E2E tests
([#13627](#13627))
([d281a62](d281a62))
* **datastore:** disable built-in OpenTelemetry SDK when metrics export
is disabled
([#13543](#13543))
([53b7142](53b7142))
* **datastore:** reduce flakiness of E2E tracing tests
([#13645](#13645))
([8afc0ab](8afc0ab))
* **deps:** update dependency
com.google.apis:google-api-services-bigquery to v2-rev20260612-2.0.0
([#13570](#13570))
([ca5ff79](ca5ff79))
* **deps:** update dependency com.google.apis:google-api-services-dns to
v1-rev20260616-2.0.0
([#12796](#12796))
([0dd60ca](0dd60ca))
* **deps:** update dependency com.google.cloud:google-cloud-pubsub-bom
to v1.151.0
([#12097](#12097))
([d169006](d169006))
* **deps:** update dependency com.google.cloud:libraries-bom to v26.84.0
([#12663](#12663))
([95c7774](95c7774))
* **deps:** update first-party storage dependencies to
v1-rev20260524-2.0.0
([#13406](#13406))
([bdeedb8](bdeedb8))
* exclude java-vertexai from existing versions check
([#13632](#13632))
([edaa4e3](edaa4e3))
* fallback on VPC
([#13567](#13567))
([e8c428d](e8c428d))
* **java-cloud-bom:** execute pre-install pass in GHA release notes
generator
([#13608](#13608))
([c365c10](c365c10))
* **release:** check remote tags using git ls-remote to prevent already
exists error
([#13574](#13574))
([6cf0567](6cf0567))
* **spanner:** fail fast when inline-begin DML returns no transaction id
([#13536](#13536))
([94315ce](94315ce))
* **spanner:** pin inline read-write transactions to default endpoint
([#13562](#13562))
([6908dee](6908dee))
* **spanner:** remove explicit tink version to resolve dependency
convergence conflict
([#13602](#13602))
([863c26e](863c26e))
* **spanner:** update dynamic channel pool default configuration
([#13646](#13646))
([37b77c3](37b77c3))


### Dependencies

* Add org.bouncycastle:bcprov-jdk18on to java-shared-dependencies
([#13531](#13531))
([e3d2082](e3d2082))
* **auth:** Update commons-codec to v1.18.0
([#13598](#13598))
([fd89957](fd89957))
* Update gapic-showcase to v0.41.0
([#13582](#13582))
([09faaac](09faaac))
* Upgrade google-http-client to v2.1.1
([#13578](#13578))
([6abef19](6abef19))


### Documentation

* add instructions for manual code generation checks in CI
([#13596](#13596))
([f6162e2](f6162e2))
</details>

---
This PR was generated with [Release
Please](https://github.com/googleapis/release-please). See
[documentation](https://github.com/googleapis/release-please#release-please).

---------

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>
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3 participants