github-actions[bot] commented on code in PR #40561:
URL: https://github.com/apache/beam/pull/40561#discussion_r4263897375


##########
.github/workflows/gemini_code_review.yml:
##########
@@ -0,0 +1,213 @@
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+name: Gemini Enterprise Code Review
+
+on:
+  pull_request:
+    paths:
+      - '.github/workflows/gemini_code_review.yml'
+  pull_request_target:
+    types: [opened, reopened, ready_for_review]
+  workflow_dispatch:
+    inputs:
+      pr_number:
+        description: 'Pull Request number to review'
+        required: true
+        type: number
+
+permissions: read-all
+
+concurrency:
+  group: gemini-code-review-${{ github.event.pull_request.number || 
inputs.pr_number }}
+  cancel-in-progress: true
+
+jobs:
+  gemini-review:
+    name: Gemini Enterprise PR Review
+    if: github.repository == 'apache/beam'
+    runs-on: [self-hosted, ubuntu-24.04, main]
+    timeout-minutes: 15
+    permissions:
+      contents: read
+      pull-requests: write
+
+    steps:
+      - name: Setup Node.js
+        uses: actions/setup-node@v7
+        with:
+          node-version: '20'
+
+      - name: Run Gemini Enterprise Code Review Agent
+        id: gemini_review
+        shell: bash
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

Review Comment:
   **🟠 High**: `@google/gemini-cli` scrubs sensitive environment variables 
matching `*TOKEN*` (including `GH_TOKEN`) when spawning child processes via 
`run_shell_command`. As a result, `gh pr view` and `gh pr diff` inside the 
agent session fail with `Exit Code: 4` (`To get started with GitHub CLI, please 
run: gh auth login`). Either authenticate `gh` via `gh auth login --with-token 
<<< "${GH_TOKEN}"` with `GH_CONFIG_DIR` or pre-fetch the PR metadata/diff 
before invoking `gemini-cli` (or instruct the prompt to use `web_fetch` / 
`curl` against the public GitHub URLs).



##########
.github/workflows/gemini_code_review.yml:
##########
@@ -0,0 +1,213 @@
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+name: Gemini Enterprise Code Review
+
+on:
+  pull_request:
+    paths:
+      - '.github/workflows/gemini_code_review.yml'
+  pull_request_target:
+    types: [opened, reopened, ready_for_review]
+  workflow_dispatch:
+    inputs:
+      pr_number:
+        description: 'Pull Request number to review'
+        required: true
+        type: number
+
+permissions: read-all
+
+concurrency:
+  group: gemini-code-review-${{ github.event.pull_request.number || 
inputs.pr_number }}
+  cancel-in-progress: true
+
+jobs:
+  gemini-review:
+    name: Gemini Enterprise PR Review
+    if: github.repository == 'apache/beam'
+    runs-on: [self-hosted, ubuntu-24.04, main]
+    timeout-minutes: 15
+    permissions:
+      contents: read
+      pull-requests: write
+
+    steps:
+      - name: Setup Node.js
+        uses: actions/setup-node@v7
+        with:
+          node-version: '20'
+
+      - name: Run Gemini Enterprise Code Review Agent
+        id: gemini_review
+        shell: bash
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GEMINI_CLI_TRUST_WORKSPACE: 'true'
+          GEMINI_FORCE_FILE_STORAGE: 'true'
+          GOOGLE_GENAI_USE_VERTEXAI: 'true'
+          GOOGLE_CLOUD_PROJECT: ${{ secrets.GCP_PROJECT_ID || 
'apache-beam-testing' }}
+          GOOGLE_CLOUD_LOCATION: 'global'
+          GEMINI_MODEL: ${{ vars.GEMINI_MODEL || 'gemini-4-argon' }}
+          PR_NUMBER: ${{ github.event.pull_request.number || inputs.pr_number 
}}
+          REPOSITORY: ${{ github.repository }}
+        run: |
+          set -euo pipefail
+
+          PR_URL="https://github.com/${REPOSITORY}/pull/${PR_NUMBER}";
+
+          mkdir -p .gemini
+          cat << 'EOF' > .gemini/settings.json
+          {
+            "model": {
+              "maxSessionTurns": 25
+            },
+            "experimental": {
+              "directWebFetch": true
+            },
+            "tools": {
+              "core": [
+                "web_fetch",
+                "run_shell_command(gh pr)",
+                "run_shell_command(gh api)",
+                "run_shell_command(curl)"
+              ]
+            }
+          }
+          EOF
+
+          cat << EOF > prompt.txt
+          You are an autonomous Apache Beam code review agent running on the 
Gemini Enterprise Agent Platform.
+          Review Pull Request: ${PR_URL}
+
+          Use \`gh pr view ${PR_URL}\` and \`gh pr diff ${PR_URL}\` to inspect 
the pull request metadata and diff.
+
+          Respond with ONLY a single valid JSON object matching this exact 
schema (no markdown prose outside the JSON):
+          {
+            "summary": "## 📋 Review Summary\n\n2-3 sentence high-level 
assessment.\n\n## 🔍 General Feedback\n- Key architectural or cross-file 
observations.",
+            "comments": [
+              {
+                "path": "relative/path/to/file.ext",
+                "line": 123,
+                "side": "RIGHT",
+                "severity": "🟠 High",
+                "body": "Clear explanation of why this is an issue and how to 
fix it.",
+                "suggestion": "optional exact replacement line(s) without 
backticks, or null"
+              }
+            ]
+          }
+          EOF
+
+          npx --yes @google/gemini-cli@latest \
+            --yolo \
+            --model "${GEMINI_MODEL}" \
+            --prompt "$(cat prompt.txt)" \
+            --output-format json \
+            < /dev/null \
+            > gemini_raw_output.json
+
+          if jq -e . gemini_raw_output.json >/dev/null 2>&1; then
+            jq -r '.response // ""' gemini_raw_output.json > 
gemini_response.txt
+          else
+            cp gemini_raw_output.json gemini_response.txt
+          fi
+
+      - name: Post PR Review to GitHub
+        uses: actions/github-script@v9
+        env:
+          PR_NUMBER: ${{ github.event.pull_request.number || inputs.pr_number 
}}
+        with:
+          script: |
+            const fs = require('fs');
+            const prNumber = Number(process.env.PR_NUMBER);
+            const rawResponse = fs.existsSync('gemini_response.txt')
+              ? fs.readFileSync('gemini_response.txt', 'utf8').trim()
+              : '';
+            if (!rawResponse) {
+              core.warning('Gemini agent returned an empty response; skipping 
PR review submission.');
+              return;
+            }
+
+            let parsed;
+            const fencedMatch = 
rawResponse.match(/```(?:json)?\s*([\s\S]*?)```/i);

Review Comment:
   **🟠 High**: Using a non-greedy regex `/```(?:json)?\s*([\s\S]*?)```/i` to 
extract JSON from a fenced code block will truncate the payload prematurely if 
any review comment `body` or `suggestion` inside the JSON string itself 
contains triple backticks (` ``` `). Prefer matching only outer fences anchored 
to the start/end of `rawResponse`, or parsing `rawResponse` directly before 
falling back to fence stripping.
   
   ```suggestion
               const fencedMatch = 
rawResponse.match(/^```(?:json)?\s*([\s\S]*)```$/i);
               const candidateJson = fencedMatch ? fencedMatch[1].trim() : 
rawResponse;
   ```



##########
.github/workflows/gemini_code_review.yml:
##########
@@ -0,0 +1,213 @@
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+name: Gemini Enterprise Code Review
+
+on:
+  pull_request:
+    paths:
+      - '.github/workflows/gemini_code_review.yml'
+  pull_request_target:
+    types: [opened, reopened, ready_for_review]
+  workflow_dispatch:
+    inputs:
+      pr_number:
+        description: 'Pull Request number to review'
+        required: true
+        type: number
+
+permissions: read-all
+
+concurrency:
+  group: gemini-code-review-${{ github.event.pull_request.number || 
inputs.pr_number }}
+  cancel-in-progress: true
+
+jobs:
+  gemini-review:
+    name: Gemini Enterprise PR Review
+    if: github.repository == 'apache/beam'
+    runs-on: [self-hosted, ubuntu-24.04, main]
+    timeout-minutes: 15
+    permissions:
+      contents: read
+      pull-requests: write
+
+    steps:
+      - name: Setup Node.js
+        uses: actions/setup-node@v7
+        with:
+          node-version: '20'
+
+      - name: Run Gemini Enterprise Code Review Agent
+        id: gemini_review
+        shell: bash
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GEMINI_CLI_TRUST_WORKSPACE: 'true'
+          GEMINI_FORCE_FILE_STORAGE: 'true'
+          GOOGLE_GENAI_USE_VERTEXAI: 'true'
+          GOOGLE_CLOUD_PROJECT: ${{ secrets.GCP_PROJECT_ID || 
'apache-beam-testing' }}
+          GOOGLE_CLOUD_LOCATION: 'global'
+          GEMINI_MODEL: ${{ vars.GEMINI_MODEL || 'gemini-4-argon' }}
+          PR_NUMBER: ${{ github.event.pull_request.number || inputs.pr_number 
}}
+          REPOSITORY: ${{ github.repository }}
+        run: |
+          set -euo pipefail
+
+          PR_URL="https://github.com/${REPOSITORY}/pull/${PR_NUMBER}";
+
+          mkdir -p .gemini
+          cat << 'EOF' > .gemini/settings.json
+          {
+            "model": {
+              "maxSessionTurns": 25
+            },
+            "experimental": {
+              "directWebFetch": true
+            },
+            "tools": {
+              "core": [
+                "web_fetch",
+                "run_shell_command(gh pr)",
+                "run_shell_command(gh api)",
+                "run_shell_command(curl)"
+              ]
+            }
+          }
+          EOF
+
+          cat << EOF > prompt.txt
+          You are an autonomous Apache Beam code review agent running on the 
Gemini Enterprise Agent Platform.
+          Review Pull Request: ${PR_URL}
+
+          Use \`gh pr view ${PR_URL}\` and \`gh pr diff ${PR_URL}\` to inspect 
the pull request metadata and diff.
+
+          Respond with ONLY a single valid JSON object matching this exact 
schema (no markdown prose outside the JSON):
+          {
+            "summary": "## 📋 Review Summary\n\n2-3 sentence high-level 
assessment.\n\n## 🔍 General Feedback\n- Key architectural or cross-file 
observations.",
+            "comments": [
+              {
+                "path": "relative/path/to/file.ext",
+                "line": 123,
+                "side": "RIGHT",
+                "severity": "🟠 High",
+                "body": "Clear explanation of why this is an issue and how to 
fix it.",
+                "suggestion": "optional exact replacement line(s) without 
backticks, or null"
+              }
+            ]
+          }
+          EOF
+
+          npx --yes @google/gemini-cli@latest \
+            --yolo \
+            --model "${GEMINI_MODEL}" \
+            --prompt "$(cat prompt.txt)" \
+            --output-format json \
+            < /dev/null \
+            > gemini_raw_output.json
+
+          if jq -e . gemini_raw_output.json >/dev/null 2>&1; then
+            jq -r '.response // ""' gemini_raw_output.json > 
gemini_response.txt
+          else
+            cp gemini_raw_output.json gemini_response.txt
+          fi
+
+      - name: Post PR Review to GitHub
+        uses: actions/github-script@v9
+        env:
+          PR_NUMBER: ${{ github.event.pull_request.number || inputs.pr_number 
}}
+        with:
+          script: |
+            const fs = require('fs');
+            const prNumber = Number(process.env.PR_NUMBER);
+            const rawResponse = fs.existsSync('gemini_response.txt')
+              ? fs.readFileSync('gemini_response.txt', 'utf8').trim()
+              : '';
+            if (!rawResponse) {
+              core.warning('Gemini agent returned an empty response; skipping 
PR review submission.');
+              return;
+            }
+
+            let parsed;
+            const fencedMatch = 
rawResponse.match(/```(?:json)?\s*([\s\S]*?)```/i);
+            const candidateJson = fencedMatch ? fencedMatch[1].trim() : 
rawResponse;
+            try {
+              parsed = JSON.parse(candidateJson);
+            } catch (firstErr) {
+              const firstBrace = rawResponse.indexOf('{');
+              const lastBrace = rawResponse.lastIndexOf('}');
+              if (firstBrace !== -1 && lastBrace > firstBrace) {
+                parsed = JSON.parse(rawResponse.slice(firstBrace, lastBrace + 
1));

Review Comment:
   **🟡 Medium**: If `JSON.parse(rawResponse.slice(firstBrace, lastBrace + 1))` 
throws a `SyntaxError` (for example, if the model outputs unstructured prose 
containing `{` and `}`), this `catch` block will throw an unhandled exception 
and fail the workflow step instead of falling back to `{ summary: rawResponse, 
comments: [] }`. Wrap the inner `JSON.parse` in its own `try/catch`.
   
   ```suggestion
                 if (firstBrace !== -1 && lastBrace > firstBrace) {
                   try {
                     parsed = JSON.parse(rawResponse.slice(firstBrace, 
lastBrace + 1));
                   } catch {
                     parsed = { summary: rawResponse, comments: [] };
                   }
                 } else {
   ```



##########
.github/workflows/gemini_code_review.yml:
##########
@@ -0,0 +1,213 @@
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+name: Gemini Enterprise Code Review
+
+on:
+  pull_request:
+    paths:
+      - '.github/workflows/gemini_code_review.yml'
+  pull_request_target:
+    types: [opened, reopened, ready_for_review]
+  workflow_dispatch:
+    inputs:
+      pr_number:
+        description: 'Pull Request number to review'
+        required: true
+        type: number
+
+permissions: read-all
+
+concurrency:
+  group: gemini-code-review-${{ github.event.pull_request.number || 
inputs.pr_number }}
+  cancel-in-progress: true
+
+jobs:
+  gemini-review:
+    name: Gemini Enterprise PR Review
+    if: github.repository == 'apache/beam'
+    runs-on: [self-hosted, ubuntu-24.04, main]
+    timeout-minutes: 15
+    permissions:
+      contents: read
+      pull-requests: write
+
+    steps:
+      - name: Setup Node.js
+        uses: actions/setup-node@v7
+        with:
+          node-version: '20'
+
+      - name: Run Gemini Enterprise Code Review Agent
+        id: gemini_review
+        shell: bash
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GEMINI_CLI_TRUST_WORKSPACE: 'true'
+          GEMINI_FORCE_FILE_STORAGE: 'true'
+          GOOGLE_GENAI_USE_VERTEXAI: 'true'
+          GOOGLE_CLOUD_PROJECT: ${{ secrets.GCP_PROJECT_ID || 
'apache-beam-testing' }}
+          GOOGLE_CLOUD_LOCATION: 'global'
+          GEMINI_MODEL: ${{ vars.GEMINI_MODEL || 'gemini-4-argon' }}
+          PR_NUMBER: ${{ github.event.pull_request.number || inputs.pr_number 
}}
+          REPOSITORY: ${{ github.repository }}
+        run: |
+          set -euo pipefail
+
+          PR_URL="https://github.com/${REPOSITORY}/pull/${PR_NUMBER}";
+
+          mkdir -p .gemini
+          cat << 'EOF' > .gemini/settings.json
+          {
+            "model": {
+              "maxSessionTurns": 25
+            },
+            "experimental": {
+              "directWebFetch": true
+            },
+            "tools": {
+              "core": [
+                "web_fetch",
+                "run_shell_command(gh pr)",
+                "run_shell_command(gh api)",
+                "run_shell_command(curl)"
+              ]
+            }
+          }
+          EOF
+
+          cat << EOF > prompt.txt
+          You are an autonomous Apache Beam code review agent running on the 
Gemini Enterprise Agent Platform.
+          Review Pull Request: ${PR_URL}
+
+          Use \`gh pr view ${PR_URL}\` and \`gh pr diff ${PR_URL}\` to inspect 
the pull request metadata and diff.
+
+          Respond with ONLY a single valid JSON object matching this exact 
schema (no markdown prose outside the JSON):
+          {
+            "summary": "## 📋 Review Summary\n\n2-3 sentence high-level 
assessment.\n\n## 🔍 General Feedback\n- Key architectural or cross-file 
observations.",
+            "comments": [
+              {
+                "path": "relative/path/to/file.ext",
+                "line": 123,
+                "side": "RIGHT",
+                "severity": "🟠 High",
+                "body": "Clear explanation of why this is an issue and how to 
fix it.",
+                "suggestion": "optional exact replacement line(s) without 
backticks, or null"
+              }
+            ]
+          }
+          EOF
+
+          npx --yes @google/gemini-cli@latest \
+            --yolo \
+            --model "${GEMINI_MODEL}" \
+            --prompt "$(cat prompt.txt)" \
+            --output-format json \
+            < /dev/null \
+            > gemini_raw_output.json
+
+          if jq -e . gemini_raw_output.json >/dev/null 2>&1; then
+            jq -r '.response // ""' gemini_raw_output.json > 
gemini_response.txt
+          else
+            cp gemini_raw_output.json gemini_response.txt
+          fi
+
+      - name: Post PR Review to GitHub
+        uses: actions/github-script@v9
+        env:
+          PR_NUMBER: ${{ github.event.pull_request.number || inputs.pr_number 
}}
+        with:
+          script: |
+            const fs = require('fs');
+            const prNumber = Number(process.env.PR_NUMBER);
+            const rawResponse = fs.existsSync('gemini_response.txt')
+              ? fs.readFileSync('gemini_response.txt', 'utf8').trim()
+              : '';
+            if (!rawResponse) {
+              core.warning('Gemini agent returned an empty response; skipping 
PR review submission.');
+              return;
+            }
+
+            let parsed;
+            const fencedMatch = 
rawResponse.match(/```(?:json)?\s*([\s\S]*?)```/i);
+            const candidateJson = fencedMatch ? fencedMatch[1].trim() : 
rawResponse;
+            try {
+              parsed = JSON.parse(candidateJson);
+            } catch (firstErr) {
+              const firstBrace = rawResponse.indexOf('{');
+              const lastBrace = rawResponse.lastIndexOf('}');
+              if (firstBrace !== -1 && lastBrace > firstBrace) {
+                parsed = JSON.parse(rawResponse.slice(firstBrace, lastBrace + 
1));
+              } else {
+                parsed = { summary: rawResponse, comments: [] };
+              }
+            }
+
+            const inlineComments = [];
+            if (Array.isArray(parsed.comments)) {
+              for (const item of parsed.comments) {
+                if (!item || !item.path || !item.body || 
!Number.isInteger(Number(item.line))) {

Review Comment:
   **🟡 Medium**: `Number(item.line)` will evaluate to `0` or a negative integer 
if the model returns `0` or negative line numbers, which `Number.isInteger()` 
accepts, causing GitHub's `pulls.createReview` API to reject the entire batch 
of inline comments with `422 Unprocessable Entity`. Ensure `line > 0`.
   
   ```suggestion
                   if (!item || !item.path || !item.body || 
!Number.isInteger(Number(item.line)) || Number(item.line) <= 0) {
   ```



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