chore: get agent version from datadog-agent changelog by kathiehuang · Pull Request #1144 · DataDog/datadog-lambda-extension

kathiehuang · 2026-03-31T14:31:01Z

Overview

In the nightly builds of serverless-init, set the agent version to be the most recently released version of datadog-agent
In the release build of serverless-init, if AGENT_VERSION is not set, use the most recently released version from the Datadog agent branch given

Testing

Ran the nightly workflow manually off this branch and made sure the logs print the correct agent version https://github.com/DataDog/datadog-lambda-extension/actions/runs/23804573812

https://github.com/DataDog/datadog-lambda-extension/actions/runs/23804573812/job/69374220028#:~:text=AGENT_VERSION%3A%207.77.1

 AGENT_VERSION: 7.77.1

…ranch given

Copilot

Pull request overview

This PR updates GitHub workflow files to automatically determine the Datadog agent version from released tags when not explicitly provided. In the nightly builds of serverless-init, it sets the agent version to the most recent release tag, and in release builds, if AGENT_VERSION is not provided, it uses the most recent release tag from the specified branch.

Changes:

Updated .github/workflows/release-serverless-init.yml to compute agent version from git tags when not provided and clarified this behavior in the input description
Updated .github/workflows/nightly-serverless-init.yml to compute agent version from git tags for nightly builds
Both workflows now use a consistent approach to query semantic version tags from the datadog-agent repository

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
.github/workflows/release-serverless-init.yml	Added automatic agent version detection from git tags, updated input description, and modified build environment variable to use computed version
.github/workflows/nightly-serverless-init.yml	Added agent version computation from git tags and passed it to build environment

Copilot · 2026-03-31T14:33:54Z

.github/workflows/release-serverless-init.yml

+      - name: Compute agent version
+        id: meta
+        run: |
+          AGENT_VERSION="${{ github.event.inputs.agentVersion }}"
+          if [ -z "$AGENT_VERSION" ]; then
+            AGENT_VERSION=$(git -C datadog-agent tag --sort=-version:refname | grep -E '^[0-9]+\.[0-9]+\.[0-9]+$' | head -1)
+          fi
+          echo "agent_version=${AGENT_VERSION}" >> "$GITHUB_OUTPUT"


The git command to retrieve the agent version could fail silently. If no tags matching the semantic version pattern are found, AGENT_VERSION will be empty, and the build will proceed with an empty version string. This could cause silent failures or unexpected behavior downstream. Consider adding error handling to verify that AGENT_VERSION is not empty before proceeding, or provide a clear error message if the version cannot be determined.

There is a default agent version set in datadog-agent, so an empty AGENT_VERSION would lead to it being set to 6.0.0

is that 6.0.0 value something that we own? does it make sense to bump it to, say, 7.0.0? or better yet, "unknown"?

We don't own it - seems like this number was set a long time ago, and some tests use this number

.github/workflows/nightly-serverless-init.yml

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chatgpt-codex-connector · 2026-03-31T14:34:29Z

.github/workflows/nightly-serverless-init.yml

        run: |
          STAMP=$(date -u +%Y%m%d)
          SHORT_SHA=$(git -C datadog-agent rev-parse --short=8 HEAD)
+          AGENT_VERSION=$(git -C datadog-agent tag --sort=-version:refname | grep -E '^[0-9]+\.[0-9]+\.[0-9]+$' | head -1)


Fetch tags before resolving AGENT_VERSION

This command assumes release tags are present locally, but both workflows check out datadog-agent with actions/checkout@v6 defaults and do not enable tag/history fetch. In that default checkout mode, git tag is empty, so this pipeline (git tag | grep ... | head -1) yields no match; under GitHub Actions’ default bash -eo pipefail, the grep exit code fails the step and blocks nightly builds (and release runs when agentVersion is left blank).

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Updated to get agent version from CHANGELOG instead of using tag fetch in 1c875ff

chatgpt-codex-connector · 2026-03-31T14:34:29Z

.github/workflows/release-serverless-init.yml

+        run: |
+          AGENT_VERSION="${{ github.event.inputs.agentVersion }}"
+          if [ -z "$AGENT_VERSION" ]; then
+            AGENT_VERSION=$(git -C datadog-agent tag --sort=-version:refname | grep -E '^[0-9]+\.[0-9]+\.[0-9]+$' | head -1)


Scope fallback tag selection to the chosen branch

The fallback lookup uses git tag --sort=-version:refname without constraining tags to agentBranch, so it can select the newest tag from any release line rather than the checked-out branch. For example, dispatching with an older maintenance branch and empty agentVersion can embed a newer unrelated version string into the built binary, which contradicts the workflow input description that the default comes from the selected branch.

Useful? React with 👍 / 👎.

Updated to get the agent version from CHANGELOG, which should be the CHANGELOG from the checked-out branch

1c875ff

kathiehuang · 2026-03-31T14:47:35Z

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chatgpt-codex-connector · 2026-03-31T14:51:39Z

.github/workflows/nightly-serverless-init.yml

        run: |
          STAMP=$(date -u +%Y%m%d)
          SHORT_SHA=$(git -C datadog-agent rev-parse --short=8 HEAD)
+          AGENT_VERSION=$(grep -m 1 -E '^[0-9]+\.[0-9]+\.[0-9]+$' datadog-agent/CHANGELOG.rst)


Resolve agent version from git tags, not changelog text

This step now depends on grep finding an exact x.y.z line in datadog-agent/CHANGELOG.rst; under the default GitHub Actions shell (bash -e), grep exits non-zero when no match is found, which aborts the workflow before build. Even when it matches, changelog ordering/format is not a stable interface for “latest released tag”, so this can silently select an unreleased or incorrect version string for AGENT_VERSION.

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Updated to log an error when grep fails so that in a serverless-init release, the user knows to set AGENT_VERSION manually

bd66093

apiarian-datadog · 2026-03-31T19:09:46Z

.github/workflows/nightly-serverless-init.yml

        run: |
          STAMP=$(date -u +%Y%m%d)
          SHORT_SHA=$(git -C datadog-agent rev-parse --short=8 HEAD)
+          AGENT_VERSION=$(grep -m 1 -E '^[0-9]+\.[0-9]+\.[0-9]+$' datadog-agent/CHANGELOG.rst) || { echo "ERROR: could not detect agent version from datadog-agent's CHANGELOG.rst"; exit 1; }


apiarian-datadog · 2026-03-31T19:10:51Z

.github/workflows/release-serverless-init.yml

+      - name: Compute agent version
+        id: meta
+        run: |
+          AGENT_VERSION="${{ github.event.inputs.agentVersion }}"
+          if [ -z "$AGENT_VERSION" ]; then
+            AGENT_VERSION=$(git -C datadog-agent tag --sort=-version:refname | grep -E '^[0-9]+\.[0-9]+\.[0-9]+$' | head -1)
+          fi
+          echo "agent_version=${AGENT_VERSION}" >> "$GITHUB_OUTPUT"


is that 6.0.0 value something that we own? does it make sense to bump it to, say, 7.0.0? or better yet, "unknown"?

kathiehuang · 2026-03-31T22:06:47Z

Integration tests aren't passing because axios is blocked, but this shouldn't affect them

kathiehuang added 2 commits March 31, 2026 10:25

Get agent version from datadog-agent tag list

8349e93

Specify that the default agent version comes from the Datadog agent b…

64f2554

…ranch given

kathiehuang requested a review from a team as a code owner March 31, 2026 14:31

kathiehuang requested review from Copilot and litianningdatadog March 31, 2026 14:31

Copilot started reviewing on behalf of kathiehuang March 31, 2026 14:32 View session

Copilot AI reviewed Mar 31, 2026

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chatgpt-codex-connector bot reviewed Mar 31, 2026

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Get agent version from datadog-agent changelog instead of tag list

1c875ff

kathiehuang changed the title ~~chore: get agent version from datadog-agent tag list~~ chore: get agent version from datadog-agent changelog Mar 31, 2026

chatgpt-codex-connector bot reviewed Mar 31, 2026

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litianningdatadog approved these changes Mar 31, 2026

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kathiehuang added 3 commits March 31, 2026 11:00

Log error if grep fails

bd66093

nit: wording

d18835d

Fix yaml syntax

023c1ff

kathiehuang requested a review from apiarian-datadog March 31, 2026 19:05

apiarian-datadog approved these changes Mar 31, 2026

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kathiehuang merged commit 0d19e53 into main Mar 31, 2026
51 of 55 checks passed

kathiehuang deleted the kathie.huang/set-agent-version branch March 31, 2026 22:07

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kathiehuang commented Mar 31, 2026 •

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