[RJKeevil]

Description

This change updates all go.mod dependencies to their latest. It replaces github.com/docker/docker with github.com/moby/moby/client, and contrib.go.opencensus.io/exporter/prometheus with go.opentelemetry.io/otel/exporters/prometheus. Lastly, it fixes a race I encountered while testing in CreateManifestSummary.

Checklist

• [x ] The PR title follows the
  Conventional Commits syntax, leading
  with fix:, feat:, chore:, ci:, etc.
• Code compiles correctly and linting (via trunk) passes locally

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Summary by CodeRabbit

• Monitoring
  • Prometheus metrics continue to be available at the existing metrics endpoints, with updated metric export behavior.
• Reliability
  • Manifest creation now reports file-close errors when encoding succeeds; encoding errors take precedence. Files are explicitly closed after encoding.

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Walkthrough

The pull request migrates Docker client calls to Moby APIs, changes Prometheus metrics export to an OpenTelemetry exporter, and makes manifest file-close errors explicit.

Changes: Moby Docker client migration

Layer / File(s)	Summary
Port mappings and dependency updates dgraphtest/dgraph.go, dgraphtest/hooks.go, dgraph/cmd/zero/zero_test.go, go.mod	Port interfaces and mappings use Moby network types. Docker inspection reads nested response fields, and dependency versions and modules are updated.
Cluster container lifecycle dgraphtest/local_cluster.go, t/t.go, testutil/docker.go	Cluster operations and test cleanup use Moby option types and response fields for network, volume, and container operations.
Container copy and export streams dgraphtest/load.go, dgraphtest/local_cluster.go, testutil/docker.go	Copy operations read from Moby copy-result content streams and close the streams. Existing error handling remains.

Prometheus metrics export

Layer / File(s)	Summary
OpenTelemetry exporter and endpoints x/metrics.go	Prometheus export uses the OpenTelemetry exporter with the existing registry, the dgraph namespace, and an OpenCensus metric producer. Both metrics endpoints use promhttp.

Manifest file-close handling

Layer / File(s)	Summary
Encoding and file close worker/backup_manifest.go	CreateManifestSummary returns encoding errors before close errors. It returns a close error when encoding succeeds.

Estimated code review effort: 3 (Moderate) | ~25 minutes

Change: Other

Suggested labels: go, area/testing

Suggested reviewers: matthewmcneely

Merge Risk: Minimal · previous review 43c67

No concrete merge-blocking risk remains in the reviewed changes; normal build and test checks should still be run.

Pre-merge checks: 4 · 1

Failed checks: 1 warning

Check name	Status	Explanation	Resolution
Docstring Coverage		Docstring coverage is 37.50% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff with cyclomatic complexity of at least 2. Documenta…	Write docstrings for the functions missing them to satisfy the coverage threshold.

Passed checks: 4 passed

Check name	Status	Explanation
Description Check		Check skipped - CodeRabbit’s high-level summary is enabled.
Title check		The title clearly summarizes the primary changes: replacing unmaintained dependencies and updating related integrations.
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.

Full details: Docstring Coverage

Explanation

Docstring coverage is 37.50% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff with cyclomatic complexity of at least 2. Documentation-only edits and deletions within surviving functions are included; unchanged diff context and fully deleted functions are excluded. Analyzed 8 functions across 9 files. (1 skipped: 1 unsupported.)

Resolution

Write docstrings for the functions missing them to satisfy the coverage threshold.

Finishing Touches

🧪 Generate unit tests (beta)

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- Around line 475-478: Update the otelprom.New configuration to disable
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Review comments at @x/metrics.go:
- Line 478: Replace the deprecated otelprom.WithoutUnits() option with a
non-deprecated option that preserves exporter-added _total suffixes. Do not use
otlptranslator.UnderscoreEscapingWithoutSuffixes; retain the existing exported
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[matthewmcneely]

Thanks for this one @RJKeevil. Moving off github.com/docker/docker is worth doing. I ran govulncheck (v1.9.0) against main and this branch:

	main	this PR
Advisories	8	1
Reachable	2	0

This clears the five docker/docker advisories (GO-2026-4883, GO-2026-4887, GO-2026-5617, GO-2026-5668, GO-2026-5746). None of them have a fixed version, since v28.5.2+incompatible isn't getting releases anymore. The x/net bump to v0.62.0 also clears the two x/net/html ones (GO-2026-6860, GO-2026-6866). For context, the Docker advisories are daemon-side issues and we only use the client in the test harness (testutil, dgraphtest, t/), so the shipped dgraph binary was never exposed. Getting them out of go.mod still stops scanners from flagging them. The one left is GO-2026-5932 (the x/crypto/openpgp deprecation notice), which isn't reachable.

It also picks up go-jose/v4 v4.1.6, which fixes CVE-2026-116587 (GHSA-mgcc-cww5-fp2q, a DoS when parsing JWKs with RSA keys). Trivy flags that one on dgraph/dgraph:latest, and unlike the Docker ones it is in the shipped binary: graphql/authorization parses the key set fetched from JWKUrl/JWKUrls. govulncheck doesn't report it yet, presumably because the Go vuln DB hasn't picked it up.

A few things need sorting before this can go in (details inline):

• The exporter config in x/metrics.go renames 16 dgraph_* metrics, which is what's failing TestMetrics in core-tests.
• otel.SetMeterProvider turns on otelgrpc metrics for every RPC.
• google.golang.org/grpc v1.86.0-dev is a prerelease, so let's pin v1.85.0.

The TestJaeger2ReceivesTraces failure in systest is failing on main too, so that one isn't on you.

[RJKeevil]

@matthewmcneely i dont know if github is being weird but I cant see your requested changes, I just see the requests from coderabbit. Could you post it in a comment instead?

[matthewmcneely]

@matthewmcneely i dont know if github is being weird but I cant see your requested changes, I just see the requests from coderabbit. Could you post it in a comment instead?

Whoops, forgot to submit the pending commentary

[RJKeevil]

@matthewmcneely no worries, and thanks for adding the exact difffs! All looking good now, bar the failing test that also fails on main. Hopefully good to go!