feat: add slack notification

.github/actions/slack-failure-notify/action.yml

@@ -0,0 +1,104 @@
+name: "Slack Notify on Failure"
+description: "Send a notification to Slack when a job fails"
+inputs:
+  webhook_url:
+    description: "Slack Webhook URL"
+    required: true
+  status:
+    description: "Job status (failure, success, etc.)"
+    required: false
+    default: "failure"
+
+runs:
+  using: "composite"
+  steps:
+    - name: Send Notification
+      shell: bash
+      env:
+        SLACK_WEBHOOK_URL: ${{ inputs.webhook_url }}
+        STATUS: ${{ inputs.status }}
+        REPO: ${{ github.repository }}
+        WORKFLOW: ${{ github.workflow }}
+        run_id: ${{ github.run_id }}
+        run_number: ${{ github.run_number }}
+        actor: ${{ github.actor }}
+        ref_name: ${{ github.ref_name }}
+        sha: ${{ github.sha }}
+        server_url: ${{ github.server_url }}
+      run: |
+        # Webhook URL の検証
+        if [ -z "$SLACK_WEBHOOK_URL" ]; then
+          echo "::warning::SLACK_WEBHOOK_URL is not set. Skipping notification."
+          exit 0
+        fi
+
+        # 変数準備
+        SHORT_SHA="${sha:0:7}"
+        WORKFLOW_URL="${server_url}/${REPO}/actions/runs/${run_id}"
+        COMMIT_URL="${server_url}/${REPO}/commit/${sha}"
+
+        # タイトルと色の決定
+        if [ "$STATUS" == "success" ]; then
+          COLOR="good"
+          TITLE="✅ CI Succeeded"
+          ICON=":white_check_mark:"
+        else
+          COLOR="danger"
+          TITLE="🚨 CI Failed"
+          ICON=":x:"
+        fi
+
+        # JSONペイロードの構築 (jqを使用してエスケープ処理を自動化)
+        PAYLOAD=$(jq -nc \
+          --arg username "GitHub CI/CD" \
+          --arg icon "$ICON" \
+          --arg text "$TITLE" \
+          --arg color "$COLOR" \
+          --arg actor "$actor" \
+          --arg status "$STATUS" \
+          --arg workflow "$WORKFLOW" \
+          --arg workflow_url "$WORKFLOW_URL" \
+          --arg repo "$REPO" \
+          --arg repo_url "${server_url}/${REPO}" \
+          --arg branch "$ref_name" \
+          --arg commit_url "$COMMIT_URL" \
+          --arg short_sha "$SHORT_SHA" \
+          --arg run_number "$run_number" \
+          --argjson ts "$(date +%s)" \
+          '{
+            username: $username,
+            icon_emoji: $icon,
+            text: $text,
+            attachments: [
+              {
+                color: $color,
+                author_name: $actor,
+                title: ("Workflow " + $workflow + " " + $status),
+                title_link: $workflow_url,
+                fields: [
+                  { title: "Repository", value: ("<" + $repo_url + "|" + $repo + ">"), short: true },
+                  { title: "Branch", value: ("`" + $branch + "`"), short: true },
+                  { title: "Commit", value: ("<" + $commit_url + "|`" + $short_sha + "`>"), short: true },
+                  { title: "Run Number", value: ("#" + $run_number), short: true }
+                ],
+                footer: ("<" + $workflow_url + "|👉 View Logs and Details>"),
+                footer_icon: "https://github.githubassets.com/favicon.ico",
+                ts: $ts
+              }
+            ]
+          }'
+        )
+
+        # 送信実行
+        HTTP_CODE=$(echo "$PAYLOAD" | curl -X POST -H 'Content-type: application/json' \
+          -d @- "$SLACK_WEBHOOK_URL" \
+          -w '%{http_code}' \
+          -s -o /tmp/slack_response.txt)
+
+        if [ "$HTTP_CODE" -eq 200 ]; then
+          echo "✅ Notification sent (HTTP 200)"
+        else
+          echo "::error::Failed to send notification. HTTP Code: $HTTP_CODE"
+          cat /tmp/slack_response.txt
+          exit 1
+        fi

.github/workflows/deploy-gh-pages.yml

@@ -43,6 +43,12 @@ jobs:
         with:
           path: ./docs
 
+      - name: Notify Slack on Failure
+        if: failure()
+        uses: ./.github/actions/slack-failure-notify
+        with:
+          webhook_url: ${{ secrets.SLACK_WEBHOOK_URL }}
+
   deploy:
     if: github.repository == 'tanzaku/postgresql-cst-parser'
     needs: build
@@ -55,3 +61,9 @@ jobs:
         if: ${{ !env.ACT }}
         id: deployment
         uses: actions/deploy-pages@v4
+
+      - name: Notify Slack on Failure
+        if: failure()
+        uses: ./.github/actions/slack-failure-notify
+        with:
+          webhook_url: ${{ secrets.SLACK_WEBHOOK_URL }}

.github/workflows/rust.yml

@@ -32,3 +32,9 @@ jobs:
         run: cargo clippy -p parser-generator -- -D warnings
       - name: Clippy (postgresql-cst-parser)
         run: cargo clippy -p postgresql-cst-parser -- -D warnings
+
+      - name: Notify Slack on Failure
+        if: failure()
+        uses: ./.github/actions/slack-failure-notify
+        with:
+          webhook_url: ${{ secrets.SLACK_WEBHOOK_URL }}

.github/workflows/slack-notify.yml

@@ -0,0 +1,154 @@
+name: Slack Notification
+on:
+  push:
+    branches: ["**"]
+  pull_request:
+    types: [opened, closed, reopened]
+  issue_comment:
+    types: [created]
+
+jobs:
+  notify:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Send Notification to Slack
+        env:
+          SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
+          EVENT_NAME: ${{ github.event_name }}
+          REPO: ${{ github.repository }}
+          ACTOR: ${{ github.actor }}
+          EVENT_JSON: ${{ toJson(github.event) }}
+        run: |
+          if [ -z "$SLACK_WEBHOOK_URL" ]; then
+            echo "::warning::SLACK_WEBHOOK_URL is not set."
+            exit 0
+          fi
+
+          # イベント情報を一時ファイルへ保存 (クォート問題回避のため)
+          printf '%s' "$EVENT_JSON" > event.json
+
+          # 共通変数の設定
+          TS=$(date +%s)
+          COLOR="#999999"
+
+          # イベントごとの処理
+          case "$EVENT_NAME" in
+            push)
+              EMOJI="🚀"
+              REF_NAME="${GITHUB_REF_NAME}"
+              COMMIT_MSG=$(jq -r '.head_commit.message' event.json)
+              COMMIT_URL=$(jq -r '.head_commit.url' event.json)
+              SHORT_SHA=$(echo "${{ github.sha }}" | cut -c1-7)
+
+              TITLE="Push to \`$REF_NAME\`"
+              MESSAGE="$COMMIT_MSG"
+              COLOR="good"
+              URL="$COMMIT_URL"
+
+              FIELDS=$(jq -n \
+                --arg sha "$SHORT_SHA" \
+                --arg url "$COMMIT_URL" \
+                --arg actor "$ACTOR" \
+                '[
+                  {"title":"Commit", "value":"<\($url)|`\($sha)`>", "short":true},
+                  {"title":"Author", "value":$actor, "short":true}
+                ]')
+              ;;
+
+            pull_request)
+              ACTION=$(jq -r '.action' event.json)
+              PR_NUM=$(jq -r '.pull_request.number' event.json)
+              PR_TITLE=$(jq -r '.pull_request.title' event.json)
+              PR_BODY=$(jq -r '.pull_request.body // ""' event.json | head -c 200)
+              MERGED=$(jq -r '.pull_request.merged' event.json)
+
+              URL=$(jq -r '.pull_request.html_url' event.json)
+              MESSAGE=$(printf "*%s*\n%s" "$PR_TITLE" "$PR_BODY")
+
+              if [ "$MERGED" == "true" ]; then
+                EMOJI="🎉"; TITLE="Merged PR #$PR_NUM"; COLOR="#6f42c1"
+              elif [ "$ACTION" == "opened" ]; then
+                EMOJI="📬"; TITLE="New PR #$PR_NUM"; COLOR="warning"
+              elif [ "$ACTION" == "closed" ]; then
+                EMOJI="🚫"; TITLE="Closed PR #$PR_NUM"; COLOR="#999999"
+              else
+                EMOJI="🔄"; TITLE="PR $ACTION #$PR_NUM"; COLOR="warning"
+              fi
+
+              FIELDS=$(jq -n \
+                --arg head "$(jq -r '.pull_request.head.ref' event.json)" \
+                --arg base "$(jq -r '.pull_request.base.ref' event.json)" \
+                '[
+                  {"title":"Branch", "value":"`\($head)` → `\($base)`", "short":true}
+                ]')
+              ;;
+
+            issue_comment)
+              EMOJI="💬"
+              ISSUE_NUM=$(jq -r '.issue.number' event.json)
+              COMMENT_BODY=$(jq -r '.comment.body' event.json)
+              URL=$(jq -r '.comment.html_url' event.json)
+              COLOR="#007bff"
+
+              if [ "$(jq -r '.issue.pull_request != null' event.json)" == "true" ]; then
+                TITLE="Comment on PR #$ISSUE_NUM"
+              else
+                TITLE="Comment on Issue #$ISSUE_NUM"
+              fi
+
+              MESSAGE="$COMMENT_BODY"
+              FIELDS="[]"
+              ;;
+
+            *)
+              EMOJI="ℹ️"
+              TITLE="Event: $EVENT_NAME"
+              MESSAGE="Triggered by $ACTOR"
+              URL="https://github.com/$REPO"
+              FIELDS="[]"
+              ;;
+          esac
+
+          # Payload 生成 (jqで安全に構築)
+          PAYLOAD=$(jq -nc \
+            --arg username "GitHub Notifications" \
+            --arg icon ":github:" \
+            --arg text "$EMOJI Notification from $REPO" \
+            --arg color "$COLOR" \
+            --arg title "$TITLE" \
+            --arg url "$URL" \
+            --arg message "$MESSAGE" \
+            --arg footer "<https://github.com/$REPO|$REPO>" \
+            --argjson fields "${FIELDS:-[]}" \
+            --argjson ts "$TS" \
+            '{
+              username: $username,
+              icon_emoji: $icon,
+              text: $text,
+              attachments: [{
+                color: $color,
+                title: $title,
+                title_link: $url,
+                text: $message,
+                fields: $fields,
+                footer: $footer,
+                ts: $ts
+              }]
+            }')
+
+          # 送信処理（エラーハンドリング付き）
+          HTTP_CODE=$(echo "$PAYLOAD" | curl -X POST -H 'Content-type: application/json' \
+            -d @- "$SLACK_WEBHOOK_URL" \
+            -w '%{http_code}' \
+            -s -o /tmp/slack_response.txt)
+
+          if [ "$HTTP_CODE" -eq 200 ]; then
+            echo "✅ Notification sent (HTTP 200)"
+          else
+            echo "::error::Failed to send notification. HTTP Code: $HTTP_CODE"
+            cat /tmp/slack_response.txt
+            exit 1
+          fi