feat(circleci-orb): initial setup for publishing dev-infra orb

Initial setup for publihsing an dev-infra orb.

.ng-dev/commit-message.ts

@@ -43,5 +43,6 @@ export const commitMessage: CommitMessageConfig = {
     ...buildScopesFor('apps', []),
     ...buildScopesFor('tslint-rules', []),
     ...buildScopesFor('shared-scripts', []),
+    ...buildScopesFor('circleci-orb', []),
   ],
 };

circleci-orb/.gitignore

@@ -0,0 +1,2 @@
+# This file will be generated by the publish script.
+packed-orb.yml

circleci-orb/@orb.yml

@@ -0,0 +1,7 @@
+version: 2.1
+
+description: Angular Dev-Infra Private Orb
+
+display:
+  home_url: 'https://angular.io'
+  source_url: 'https://github.com/angular/dev-infra'

circleci-orb/BUILD.bazel

@@ -0,0 +1,20 @@
+ORB_NAME = "angular/dev-infra"
+
+ORB_VERSION = "dev:0.0.1"
+
+filegroup(
+    name = "orb_generated_files",
+    srcs = [
+        "//circleci-orb/scripts/rebase-on-target-branch:script",
+    ],
+)
+
+sh_binary(
+    name = "publish",
+    srcs = ["publish.sh"],
+    args = [
+        ORB_NAME,
+        ORB_VERSION,
+    ],
+    data = [":orb_generated_files"],
+)

circleci-orb/commands/rebase-on-target-branch.yml

@@ -0,0 +1,18 @@
+description: Rebase PR on the target branch
+
+parameters:
+  branch:
+    type: string
+    description: The `pipeline.git.branch` pipeline value.
+  base_revision:
+    type: string
+    description: The `pipeline.git.base_revision` pipeline value.
+
+steps:
+  - run:
+      environment:
+        CIRCLE_BASE_REVISION: << parameters.base_revision >>
+        CIRCLE_BRANCH: << parameters.branch >>
+
+      name: Rebasing PR on the target branch
+      command: << include(../dist/bin/circleci-orb/scripts/rebase-on-target-branch/script.sh) >>

circleci-orb/index.bzl

@@ -0,0 +1,20 @@
+"""Helper rules for building CircleCI orbs with the help of Bazel."""
+
+def nodejs_script_to_sh_script(name, output_file, bundle_file):
+    """Rule that takes a NodeJS script and wraps it into a Bash script.
+
+      This is useful for inclusion in CircleCI `run` commands in Orbs because
+      there cannot be an external NodeJS script file, or direct NodeJS `run` commands.
+    """
+    native.genrule(
+        name = name,
+        srcs = [bundle_file],
+        outs = [output_file],
+        cmd = """
+          touch $@
+          echo '(cat <<"EOF" ' >> $@
+          cat $< >> $@
+          echo 'EOF' >> $@
+          echo ') | node' >> $@
+        """,
+    )

circleci-orb/publish.sh

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+
+orbName=${1}
+orbVersion=${2}
+
+cd ${BUILD_WORKSPACE_DIRECTORY}/circleci-orb
+
+# Pack the Orb (i.e. inline the built scripts etc.)
+circleci orb pack $PWD > $PWD/packed-orb.yml
+
+# Print the packed ORB for debugging/sanity check.
+cat $PWD/packed-orb.yml
+
+read -p "Do you want to proceed publishing? (press any key to continue)" -n 1 -r
+
+# Run the publish with the provided version and orb name.
+circleci orb publish $PWD/packed-orb.yml "${orbName}@${orbVersion}"

circleci-orb/scripts/rebase-on-target-branch/BUILD.bazel

@@ -0,0 +1,24 @@
+load("//tools:defaults.bzl", "esbuild", "ts_library")
+load("//circleci-orb:index.bzl", "nodejs_script_to_sh_script")
+
+package(default_visibility = ["//circleci-orb:__subpackages__"])
+
+ts_library(
+    name = "rebase-on-target-branch",
+    srcs = ["index.ts"],
+    deps = ["@npm//@types/node"],
+)
+
+esbuild(
+    name = "bundle",
+    entry_point = "index.ts",
+    format = "iife",
+    sourcemap = "inline",
+    deps = [":rebase-on-target-branch"],
+)
+
+nodejs_script_to_sh_script(
+    name = "script",
+    bundle_file = ":bundle.js",
+    output_file = "script.sh",
+)

circleci-orb/scripts/rebase-on-target-branch/index.ts

@@ -0,0 +1,6 @@
+#!/usr/bin/env node
+
+const circleBaseRevision = process.env.CIRCLE_BASE_REVISION;
+const circleBranch = process.env.CIRCLE_BRANCH;
+
+console.error('Works', circleBaseRevision, circleBranch);