Add a run task separate from the build task

build-task.sh

@@ -4,5 +4,5 @@ curl https://sh.rustup.rs -sSf | sh -s -- --default-toolchain none -y
 export PATH="$HOME/.cargo/bin:$PATH"
 
 cd something-rust
-cargo run --release
+cargo build --release
 gzip -c target/release/something-rust > something-rust.gz

decision-task/curl-artifact.sh

@@ -0,0 +1,6 @@
+#!/bin/sh
+curl \
+    --retry 5 \
+    --connect-timeout 10 \
+    --location
+    https://queue.taskcluster.net/v1/task/$1/artifacts/$2

decision-task/run.py

@@ -11,45 +11,61 @@ import taskcluster
 event = json.loads(os.environ["GITHUB_EVENT"])
 print("GitHub event:\n%s\n" % json.dumps(event, sort_keys=True, indent=4, separators=(',', ': ')))
 
-task_id = taskcluster.slugId()
-payload = {
-    "taskGroupId": os.environ["DECISION_TASK_ID"],
-    "dependencies": [os.environ["DECISION_TASK_ID"]],
-    "schedulerId": "taskcluster-github",  # FIXME: can we avoid hard-coding this?
-    "provisionerId": "aws-provisioner-v1",
-    "workerType": "github-worker",
-    "created": taskcluster.fromNowJSON(""),
-    "deadline": taskcluster.fromNowJSON("1 hour"),
-    "metadata": {
-        "name": "Taskcluster experiments for Servo: Child task",
-        "description": "",
-        "owner": event["pusher"]["name"] + "@users.noreply.github.com",
-        "source": event["compare"],
-    },
-    "payload": {
-        "maxRunTime": 600,
-        "image": "buildpack-deps:bionic",
-        "command": [
-            "/bin/bash",
-            "--login",
-            "-c",
-            """
-                git clone {event[repository][clone_url]} repo &&
-                cd repo &&
-                git checkout {event[after]} &&
-                ./child-task.sh
-            """.format(event=event),
-        ],
-        "artifacts": {
-            "public/executable.gz": {
-                "type": "file",
-                "path": "/repo/something-rust/something-rust.gz",
-                "expires": taskcluster.fromNowJSON("1 week"),
-            },
-        },
-    },
-}
 # https://docs.taskcluster.net/docs/reference/workers/docker-worker/docs/features#feature-taskclusterproxy
 queue = taskcluster.Queue(options={"baseUrl": "http://taskcluster/queue/v1/"})
-queue.createTask(task_id, payload)
+
-print("new task scheduled: " + task_id)
+command_prefix = """
+    git clone {event[repository][clone_url]} repo &&
+    cd repo &&
+    git checkout {event[after]} &&
+    """.format(event=event)
+
+def create_task(name, command, artifacts=None, dependencies=None):
+    task_id = taskcluster.slugId()
+    payload = {
+        "taskGroupId": os.environ["DECISION_TASK_ID"],
+        "dependencies": [os.environ["DECISION_TASK_ID"]] + (dependencies or []),
+        "schedulerId": "taskcluster-github",
+        "provisionerId": "aws-provisioner-v1",
+        "workerType": "github-worker",
+        "created": taskcluster.fromNowJSON(""),
+        "deadline": taskcluster.fromNowJSON("1 hour"),
+        "metadata": {
+            "name": "Taskcluster experiments for Servo: " + name,
+            "description": "",
+            "owner": event["pusher"]["name"] + "@users.noreply.github.com",
+            "source": event["compare"],
+        },
+        "payload": {
+            "maxRunTime": 600,
+            "image": "buildpack-deps:bionic",
+            "command": [
+                "/bin/bash",
+                "--login",
+                "-c",
+                command_prefix + command
+            ],
+            "artifacts": {
+                "public/" + artifact_name: {
+                    "type": "file",
+                    "path": path,
+                    "expires": taskcluster.fromNowJSON("1 week"),
+                }
+                for artifact_name, path in artifacts or []
+            },
+        },
+    }
+    queue.createTask(task_id, payload)
+    print("Scheduled %s: %s" % (name, task_id))
+    return task_id
+
+build_task = create_task(
+    "build task",
+    "./build-task.sh",
+    artifacts=[("executable.gz", "/repo/something-rust/something-rust.gz")],
+)
+create_task(
+    "run task",
+    "./run-task.sh",
+    dependencies=[build_task],
+)

run-task.sh

@@ -0,0 +1,5 @@
+#!/bin/sh
+
+./curl-artifact.sh $BUILD_TASK_ID public/executable.gz -o executable.gz
+gunzip executable.gz
+./executable