Add a Taskcluster hook to generate the past bugs by function data

Second part of #1133

.taskcluster.yml

@@ -378,6 +378,40 @@ tasks:
             owner: mcastelluccio@mozilla.com
             source: ${repository}/raw/${head_rev}/.taskcluster.yml
 
+      - $if: 'tasks_for == "github-push" && head_branch[:10] == "refs/tags/"'
+        then:
+          taskId: {$eval: as_slugid("update_hook_past_bugs_by_function_pipeline")}
+          dependencies:
+            - {$eval: as_slugid("docker_push")}
+          scopes:
+            - hooks:modify-hook:project-relman/bugbug-past-bugs-by-function
+            - assume:hook-id:project-relman/bugbug-past-bugs-by-function
+          created: {$fromNow: ''}
+          deadline: {$fromNow: '5 hours'}
+          provisionerId: proj-relman
+          workerType: ci
+          payload:
+            features:
+              taskclusterProxy:
+                true
+            maxRunTime: 3600
+            image: "${taskboot_image}"
+            env:
+              VERSION: {$eval: 'head_branch[10:]'}
+            command:
+              - "/bin/sh"
+              - "-lcxe"
+              - "git clone --quiet ${repository} &&
+                 cd bugbug &&
+                 git -c advice.detachedHead=false checkout ${head_rev} &&
+                 python infra/set_hook_version.py $VERSION infra/taskcluster-hook-past-bugs-by-function.json &&
+                 taskboot --target . build-hook infra/taskcluster-hook-past-bugs-by-function.json project-relman bugbug-past-bugs-by-function"
+          metadata:
+            name: bugbug update past bugs by function hook
+            description: bugbug update past bugs by function hook
+            owner: mcastelluccio@mozilla.com
+            source: ${repository}/raw/${head_rev}/.taskcluster.yml
+
       - $if: 'tasks_for == "github-push" && head_branch[:10] == "refs/tags/"'
         then:
           taskId: {$eval: as_slugid("update_hook_classify_patch")}

infra/taskcluster-hook-past-bugs-by-function.json

@@ -0,0 +1,64 @@
+{
+    "schedule": [
+        "0 0 0 * * *"
+    ],
+    "metadata": {
+        "description": "",
+        "name": "BugBug past bugs by function pipeline",
+        "owner": "mcastelluccio@mozilla.com"
+    },
+    "task": {
+        "created": {
+            "$fromNow": "0 seconds"
+        },
+        "deadline": {
+            "$fromNow": "2 hours"
+        },
+        "expires": {
+            "$fromNow": "1 month"
+        },
+        "extra": {},
+        "metadata": {
+            "description": "",
+            "name": "BugBug past bugs by function pipeline",
+            "owner": "mcastelluccio@mozilla.com",
+            "source": "https://github.com/mozilla/bugbug"
+        },
+        "payload": {
+            "artifacts": {
+                "public/past_bugs_by_function.pickle.zst": {
+                    "path": "/past_bugs_by_function.pickle.zst",
+                    "type": "file"
+                }
+            },
+            "cache": {},
+            "capabilities": {},
+            "env": {},
+            "features": {
+                "taskclusterProxy": true
+            },
+            "command": [
+                "bugbug-past-bugs-by-function"
+            ],
+            "image": "mozilla/bugbug",
+            "maxRunTime": 7200
+        },
+        "priority": "normal",
+        "provisionerId": "proj-relman",
+        "retries": 5,
+        "routes": [
+            "notify.email.release-mgmt-analysis@mozilla.com.on-failed",
+            "notify.irc-channel.#bugbug.on-failed"
+        ],
+        "schedulerId": "-",
+        "scopes": [
+            "assume:hook-id:project-relman/bugbug-past-bugs-by-function"
+        ],
+        "tags": {},
+        "workerType": "ci"
+    },
+    "triggerSchema": {
+        "additionalProperties": false,
+        "type": "object"
+    }
+}

tests/test_hooks.py

@@ -20,6 +20,7 @@ parameters = [
     (os.path.realpath("infra/taskcluster-hook-annotate.json"), {}),
     (os.path.realpath("infra/taskcluster-hook-pipeline-start.json"), {}),
     (os.path.realpath("infra/taskcluster-hook-check-models-start.json"), {}),
+    (os.path.realpath("infra/taskcluster-hook-past-bugs-by-function.json"), {}),
     (os.path.realpath("infra/taskcluster-hook-classify-patch.json"), {"DIFF_ID": 123}),
     (os.path.realpath("infra/taskcluster-hook-test-select.json"), {"DIFF_ID": 123}),
 ]