CI: add promotion step for publish grafanacom (#93851)

* add promotion step for publish grafanacom

* publish-grafanacom depends on compile-build-cmd

* use DRONE_TAG

* add docstring comment for depends_on

.drone.yml

@@ -4165,6 +4165,49 @@ volumes:
     path: /var/run/docker.sock
   name: docker
 ---
+clone:
+  retries: 3
+depends_on: []
+image_pull_secrets:
+- gcr
+- gar
+kind: pipeline
+name: publish-grafanacom
+node:
+  type: no-parallel
+platform:
+  arch: amd64
+  os: linux
+services: []
+steps:
+- commands:
+  - go build -o ./bin/build -ldflags '-extldflags -static' ./pkg/build/cmd
+  depends_on: []
+  environment:
+    CGO_ENABLED: 0
+  image: golang:1.23.1-alpine
+  name: compile-build-cmd
+- commands:
+  - ./bin/build publish grafana-com --edition oss ${DRONE_TAG}
+  depends_on:
+  - compile-build-cmd
+  environment:
+    GCP_KEY:
+      from_secret: gcp_grafanauploads_base64
+    GRAFANA_COM_API_KEY:
+      from_secret: grafana_api_key
+  image: grafana/grafana-ci-deploy:1.3.3
+  name: publish-grafanacom
+trigger:
+  event:
+  - promote
+  target: publish-grafanacom
+type: docker
+volumes:
+- host:
+    path: /var/run/docker.sock
+  name: docker
+---
 clone:
   retries: 3
 depends_on:
@@ -6108,6 +6151,6 @@ kind: secret
 name: gcr_credentials
 ---
 kind: signature
-hmac: 7335b2e56769f72716f5dac524741e423abb99eacf775fa635e59c2d658c8aee
+hmac: 4a043d63a119ebf5920b600fce404d98f570504e855039cc4787c2fa1ab04669
 
 ...

scripts/drone/events/release.star

@@ -242,6 +242,17 @@ def publish_packages_pipeline():
             depends_on = deps,
             environment = {"EDITION": "oss"},
         ),
+        pipeline(
+            name = "publish-grafanacom",
+            trigger = {
+                "event": ["promote"],
+                "target": "publish-grafanacom",
+            },
+            steps = [
+                compile_build_cmd(),
+                publish_grafanacom_step(ver_mode = "release", depends_on = ["compile-build-cmd"]),
+            ],
+        ),
     ]
 
 def publish_npm_pipelines():

scripts/drone/steps/lib.star

@@ -727,6 +727,7 @@ def frontend_metrics_step(trigger = None):
     Returns:
       Drone step.
     """
+
     step = {
         "name": "publish-frontend-metrics",
         "image": images["node"],
@@ -1178,7 +1179,7 @@ def upload_packages_step(ver_mode, trigger = None):
         step = dict(step, when = trigger)
     return step
 
-def publish_grafanacom_step(ver_mode):
+def publish_grafanacom_step(ver_mode, depends_on = ["publish-linux-packages-deb", "publish-linux-packages-rpm"]):
     """Publishes Grafana packages to grafana.com.
 
     Args:
@@ -1186,6 +1187,7 @@ def publish_grafanacom_step(ver_mode):
         variable as the value for the --build-id option.
         TODO: is this actually used by the grafanacom subcommand? I think it might
         just use the environment variable directly.
+      depends_on: what other steps this one depends on (strings)
 
     Returns:
       Drone step.
@@ -1203,10 +1205,7 @@ def publish_grafanacom_step(ver_mode):
     return {
         "name": "publish-grafanacom",
         "image": images["publish"],
-        "depends_on": [
-            "publish-linux-packages-deb",
-            "publish-linux-packages-rpm",
-        ],
+        "depends_on": depends_on,
         "environment": {
             "GRAFANA_COM_API_KEY": from_secret("grafana_api_key"),
             "GCP_KEY": from_secret(gcp_grafanauploads_base64),