CI: Introduce lint-backend pipeline (#55476)

* Introduce lint-backend pipeline

* Use go image and install make

* Don't run lint pipeline on .drone.yml changes

scripts/drone/events/main.star

@@ -47,6 +47,11 @@ load(
     'enterprise_downstream_pipeline',
 )
 
+load(
+    'scripts/drone/pipelines/lint_backend.star',
+    'lint_backend_pipeline',
+)
+
 load('scripts/drone/vault.star', 'from_secret')
 
 
@@ -84,6 +89,7 @@ def main_pipelines(edition):
         docs_pipelines(edition, ver_mode, trigger_docs_main()),
         test_frontend(trigger, ver_mode),
         test_backend(trigger, ver_mode),
+        lint_backend_pipeline(trigger, ver_mode),
         build_e2e(trigger, ver_mode, edition),
         integration_tests(trigger, ver_mode, edition),
         windows(trigger, edition, ver_mode),

scripts/drone/events/pr.star

@@ -39,6 +39,11 @@ load(
     'shellcheck_pipeline',
 )
 
+load(
+    'scripts/drone/pipelines/lint_backend.star',
+    'lint_backend_pipeline',
+)
+
 ver_mode = 'pr'
 trigger = {
     'event': [
@@ -59,6 +64,7 @@ def pr_pipelines(edition):
         verify_drone(get_pr_trigger(include_paths=['scripts/drone/**', '.drone.yml', '.drone.star']), ver_mode),
         test_frontend(get_pr_trigger(exclude_paths=['pkg/**', 'packaging/**', 'go.sum', 'go.mod']), ver_mode),
         test_backend(get_pr_trigger(include_paths=['pkg/**', 'packaging/**', '.drone.yml', 'conf/**', 'go.sum', 'go.mod', 'public/app/plugins/**/plugin.json', 'devenv/**']), ver_mode),
+        lint_backend_pipeline(get_pr_trigger(include_paths=['pkg/**', 'packaging/**', 'conf/**', 'go.sum', 'go.mod', 'public/app/plugins/**/plugin.json', 'devenv/**']), ver_mode),
         build_e2e(trigger, ver_mode, edition),
         integration_tests(get_pr_trigger(include_paths=['pkg/**', 'packaging/**', '.drone.yml', 'conf/**', 'go.sum', 'go.mod', 'public/app/plugins/**/plugin.json']), ver_mode, edition),
         docs_pipelines(edition, ver_mode, trigger_docs_pr()),

scripts/drone/pipelines/lint_backend.star

@@ -0,0 +1,31 @@
+load(
+    'scripts/drone/steps/lib.star',
+    'identify_runner_step',
+    'wire_install_step',
+    'lint_backend_step',
+    'lint_drone_step',
+    'compile_build_cmd',
+)
+
+load(
+    'scripts/drone/utils/utils.star',
+    'pipeline',
+)
+
+def lint_backend_pipeline(trigger, ver_mode):
+    wire_step = wire_install_step()
+    wire_step.update({ 'depends_on': [] })
+    init_steps = [
+        identify_runner_step(),
+        compile_build_cmd(),
+        wire_step,
+    ]
+    test_steps = [
+        lint_backend_step(edition="oss"),
+    ]
+    if ver_mode == 'main':
+        test_steps.extend([lint_drone_step()])
+
+    return pipeline(
+        name='{}-lint-backend'.format(ver_mode), edition="oss", trigger=trigger, services=[], steps=init_steps + test_steps,
+    )

scripts/drone/pipelines/test_backend.star

@@ -1,10 +1,7 @@
 load(
     'scripts/drone/steps/lib.star',
     'identify_runner_step',
-    'download_grabpl_step',
     'wire_install_step',
-    'lint_backend_step',
-    'lint_drone_step',
     'test_backend_step',
     'test_backend_integration_step',
     'verify_gen_cue_step',
@@ -19,18 +16,14 @@ load(
 def test_backend(trigger, ver_mode):
     init_steps = [
         identify_runner_step(),
-        download_grabpl_step(),
         compile_build_cmd(),
         verify_gen_cue_step(edition="oss"),
         wire_install_step(),
     ]
     test_steps = [
-        lint_backend_step(edition="oss"),
         test_backend_step(edition="oss"),
         test_backend_integration_step(edition="oss"),
     ]
-    if ver_mode == 'main':
-        test_steps.extend([lint_drone_step()])
 
     return pipeline(
         name='{}-test-backend'.format(ver_mode), edition="oss", trigger=trigger, services=[], steps=init_steps + test_steps,

scripts/drone/steps/lib.star

@@ -207,7 +207,7 @@ def enterprise_downstream_step(edition, ver_mode):
 def lint_backend_step(edition):
     return {
         'name': 'lint-backend' + enterprise2_suffix(edition),
-        'image': build_image,
+        'image': go_image,
         'environment': {
             # We need CGO because of go-sqlite3
             'CGO_ENABLED': '1',
@@ -216,6 +216,7 @@ def lint_backend_step(edition):
             'wire-install',
         ],
         'commands': [
+            'apt-get update && apt-get install make',
             # Don't use Make since it will re-download the linters
             'make lint-go',
         ],