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out_chronicle: add support for the Chronicle API - #12548
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📝 Walkthrough
Merge Risk: ⚪ Minimal · up to The previously reported split-request failure is corrected, and Chronicle requests are checked against the configured body-size limit. No actionable issue remains from this review. Pre-merge checks |
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Check name Status Explanation Linked Issues check Issue #12157requires support for both the legacy API and the Chronicle API during the transition. The PR keepslegacyas the default and addschroniclesupport throughlogs:import. The implemen…Out of Scope Changes check The changes remain within issue #12157. Legacy compatibility supports the transition requirement. The RFC 3339 precision fix produces valid timestamps for both modes. Split-chunk result handling preve…Description Check Check skipped - CodeRabbit’s high-level summary is enabled. Title check The title clearly and concisely describes the main change: adding Chronicle API support to out_chronicle.
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Review comments at @plugins/out_chronicle/chronicle.c:
- Around line 1707-1717: Update cb_chronicle_flush to initialize the aggregate
result to FLB_OK and process every batch, including after FLB_ERROR. Store each
request’s response separately and aggregate with FLB_RETRY taking precedence
over FLB_ERROR, which takes precedence over FLB_OK; use the per-request result
for response logging.
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📒 Files selected for processing (3)
plugins/out_chronicle/chronicle.cplugins/out_chronicle/chronicle.htests/runtime/out_chronicle.c
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The fraction of 'ts_rfc3339' was printed from tv_nsec with a minimum width of three digits, so any nanosecond value below 100000000 lost its leading zeros, e.g: 62500000 ns was sent as ".62500000Z" (0.625s) instead of 0.0625s. Format the fraction with the full nine digits in a helper that can be shared by other payload formats. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com> Signed-off-by: cozybear-dev <7195866+cozybear-dev@users.noreply.github.com>
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com> Signed-off-by: cozybear-dev <7195866+cozybear-dev@users.noreply.github.com>
Google SecOps is deprecating the legacy Ingestion API
(malachiteingestion-pa.googleapis.com) in favor of the Chronicle API.
New instances cannot use the legacy API from October 26, 2026 and it
shuts down on July 20, 2027.
Add the 'api' property to select the ingestion API. The default,
'legacy', keeps the current unstructuredlogentries:batchCreate behavior
so existing configurations are not affected. With 'chronicle', records
are sent to the logs:import method of the Chronicle API:
POST https://{region}-chronicle.googleapis.com/v1/projects/{project_id}
/locations/{region}/instances/{customer_id}/logTypes/{log_type}
/logs:import
The existing properties are reused: 'customer_id' is the Google SecOps
instance, 'project_id' the Google Cloud project linked to it, and
'region' the location of the instance (default: us). The access token
is requested with the cloud-platform scope.
Each record becomes a Log with its base64 encoded 'data', the record
time as 'logEntryTime' and the flush time as 'collectionTime'. The API
requires the collection time to be later than the record time, so records
that are not in the past use the record time plus one millisecond.
'namespace' and 'label' map to 'environmentNamespace' and 'labels'. Since
labels are sent as a map, duplicate label keys are rejected at startup.
Supported log types are only validated at startup with the legacy API,
the Chronicle API rejects unknown log types on import. Such client errors
fail again on every retry, so with the Chronicle API a 4xx response is
reported as an error instead of being retried, except for 401, 408 and
429. The maximum request size follows the 4 MB limit of the Chronicle API.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Signed-off-by: cozybear-dev <7195866+cozybear-dev@users.noreply.github.com>
Cover the logs:import payload, the base64 encoded log_key value, the namespace and labels map, the collection time of records from the future, the rejection of invalid api, region, log_type and duplicate label settings, and the handling of HTTP response statuses of both APIs. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com> Signed-off-by: cozybear-dev <7195866+cozybear-dev@users.noreply.github.com>
A chunk is sent in several requests when its payload exceeds the request size limit, but the flush result only reflected the last request. A later success hid an earlier failure, so a request that had to be retried was dropped without a retry, and a request rejected by the Chronicle API was not reported as an error. Stop at the first request that must be retried, since a retry sends the whole chunk again. After a rejected request, keep sending the rest of the chunk and report the error once it is done. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com> Signed-off-by: cozybear-dev <7195866+cozybear-dev@users.noreply.github.com>
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Google SecOps is deprecating the legacy Ingestion API (
malachiteingestion-pa.googleapis.com), whichout_chroniclecurrently uses exclusively. New instances lose access on October 26, 2026 and the API shuts down on July 20, 2027 (deprecations, migration guide).This PR adds support for the Chronicle API
logs.importmethod behind a newapioption.legacystays the default, so existing configurations keep working during the transition, as the issue asks.Fixes #12157
Changes
out_chronicle: add support for the Chronicle APIapiproperty:legacy(default) orchronicle.api chronicle, records are sent to:POST https://{region}-chronicle.googleapis.com/v1/projects/{project_id}/locations/{region}/instances/{customer_id}/logTypes/{log_type}/logs:importcustomer_idis the SecOps instance ID,project_idis the linked Google Cloud project (still falls back to the credentials file), andregionis the instance location (us,europe,europe-west2, and so on). The region is lowercased, defaults tous, and is validated as a hostname label.https://www.googleapis.com/auth/cloud-platform, the same one Google's own SecOps SDK and ingestion scripts use.Logwith base64data,logEntryTime, andcollectionTime.collectionTimeis the flush time. The API requires it to be later thanlogEntryTime, so a record timestamp that isn't in the past getslogEntryTime+ 1 ms. The record also carriesenvironmentNamespace(fromnamespace/namespace_key) andlabels(fromlabel, sent as a map{"key": {"value": ...}}).log_keyhandling, and batch splitting on namespace/label changes are reused unchanged.project_id,customer_id, andlog_typeare interpolated into the URL path, so they are checked against RFC 3986 unreserved characters plus:(for domain-scoped project IDs). Labels become a JSON map, so duplicate label keys are rejected at startup.GET /v2/logtypes) only runs forlegacy. Chronicle API v1 has nologTypes.get, andlogTypes.listis paginated and needs an extra IAM permission (chronicle.logTypes.list).logs.importitself rejects unknown log types.2xxreturnsFLB_OK.4xxreturnsFLB_ERROR, so it is not retried and an error is logged, except401,408and429.5xxand anything else returnFLB_RETRY. A permanently invalidlog_typeor missing permissions therefore can't be retried forever. Legacy keeps retrying every non-200, as before.chronicle_format()just dispatches between the two formats.out_chronicle: fix sub-second part of RFC 3339 timestamps(separate commit, also affects legacy)ts_rfc3339printed the fraction as"%03" PRIu64oftv_nsec, so nanosecond values below 100,000,000 lost their leading zeros. For example, 62,500,000 ns was sent as.62500000Z(0.625 s instead of 0.0625 s), so roughly 10% of timestamps were off by up to ~0.9 s. Fractions are now always 9 digits, and the same helper is reused for the Chronicle API timestamps.out_chronicle: report failed requests of a split chunk(separate commit, also affects legacy)FLB_RETRY, because a retry re-sends the whole chunk. After anFLB_ERRORit sends the remaining batches and then reportsFLB_ERROR.Tests are in two separate commits.
Compatibility
apidefaults tolegacy, and the legacy endpoint, scope, payload shape, and log type check are unchanged.ts_rfc3339, which now always has 9 digits.Example configuration
Before (legacy, still the default):
After (Chronicle API):
The service account needs the
chronicle.logs.importpermission in the project linked to the SecOps instance.Testing
I don't have access to a real Google SecOps tenant, so everything below runs against the documented API contract. A smoke test by someone with a tenant would be welcome.
Runtime tests:
ctest --test-dir build -R flb-rt-out_chronicle --output-on-failure, 100% passed (20 cases, 11 new). The new timestamp test fails on the old code (.62500000Z) and passes with the fix. The new cases cover:logs:importpayload shape and base64datalog_keywith the Chronicle APIenvironmentNamespaceand the labels mapcollectionTimefor future records, including the carry into the next secondtest_responsehookapi, an invalidregion, alog_typecontaining/, and duplicate label keysValgrind, runtime tests (
valgrind --leak-check=full ./bin/flb-rt-out_chronicle --no-exec, so all cases run in one process):ERROR SUMMARY: 0 errors,All heap blocks were freed -- no leaks are possible(68,130 allocs and 68,130 frees).End-to-end with the unmodified binary. Inside a container,
oauth2.googleapis.com,europe-west2-chronicle.googleapis.com, andmalachiteingestion-pa.googleapis.comwere mapped to a local HTTPS fake server (--add-host), with a throwaway CA added to the container's trust store. The fake server records every request and decodes the JWT claims.api chronicle: the token request carries thecloud-platformscope.region EUROPE-WEST2resolves toeurope-west2-chronicle.googleapis.comwith the correct import path, the Bearer token is sent, anddatadecodes back to thelog_keyvalue.api legacy(regression): the token request carries themalachite-ingestionscope. The run doesGET /v2/logtypesand thenPOST /v2/unstructuredlogentries:batchCreatewith the same body shape as before.api chronicle: a 7 MB file of 60,000 lines (in_tail) was sent in 5 requests of at most 3.61 MB, and every record arrived exactly once.Retry_Limit 3: a404(unknown log type) is sent once and dropped with an error, and a503is sent and then retried three times.503on the first batch of a legacy chunk lost records 0–5714 while the engine reported success, and a400on the first batch withapi chroniclewas hidden (errors=0). With the fix, the chunk is retried and all 60,000 records arrive exactly once, and the400is reported (errors=1) while the other batches are still delivered.404path and both split-chunk scenarios also ran end to end under valgrind with 0 errors and no leaks.Captured Chronicle API request
Token request JWT claims:
{"iss": "fluent-bit@creds-project.iam.gserviceaccount.com", "scope": "https://www.googleapis.com/auth/cloud-platform", "aud": "https://oauth2.googleapis.com/token", ...}Debug log + valgrind output (api chronicle, end to end)
Commit lint:
GITHUB_EVENT_NAME=pull_request GITHUB_BASE_REF=master python .github/scripts/commit_prefix_check.pypassed for the full PR range.tests/integrationhas noout_chroniclescenario, so no Python integration suite applies.Enter
[N/A]in the box, if an item is not applicable to your change.Testing
Before we can approve your change; please submit the following in a comment:
If this is a change to packaging of containers or native binaries then please confirm it works for all targets.
ok-package-testlabel to test for all targets (requires maintainer to do).Documentation
Doc PR: fluent/fluent-bit-docs#2768
Backporting
Fluent Bit is licensed under Apache 2.0, by submitting this pull request I understand that this code will be released under the terms of that license.
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Summary by CodeRabbit
logs:importAPI. The legacy API remains the default.