add role for configuring android worker

playbooks/edx-east/jenkins_worker_android.yml

+# Configure a Jenkins worker instance
+# This has all the requirements to build, sign, and test the android
+# client, but does not contain the platform
+
+- name: Configure instance(s)
+  hosts: jenkins_worker
+  become: True
+  gather_facts: True
+  vars:
+    serial_count: 1
+    android_worker: True
+  serial: "{{ serial_count }}"
+  roles:
+    - aws
+    - jenkins_worker

playbooks/roles/android_sdk/defaults/main.yml

+---
+# User/group to manage Android SDK
+jenkins_user: "jenkins"
+jenkins_group: "jenkins"
+# Tarball to download
+android_download: "android-sdk_r24.4.1-linux.tgz"
+# Checksum of Android SDK (from: https://developer.android.com/studio/index.html#downloads)
+android_checksum: "725bb360f0f7d04eaccff5a2d57abdd49061326d"
+# path to installed android sdk
+android_home: "/opt/android-sdk-linux"
+# individual android build targets to be downloaded via the androind sdk manager
+android_build_targets:
+    - android-23

playbooks/roles/android_sdk/tasks/main.yml

+---
+# Configure the Jenkins worker system for building the edx android application
+- name: Create jenkins group
+  group: name={{ jenkins_group }} state=present
+
+# The Jenkins account needs a login shell because Jenkins uses scp
+- name: Add the jenkins user to the group and configure shell
+  user: name={{ jenkins_user }} append=yes group={{ jenkins_group }} shell=/bin/bash
+
+# Download the Android SDK/tools tarball from Google's download site. 
+# NOTE: while it is the general policy to use repositories/ppas as much as possible
+#       it did not seem reliable for this work. Other avenues were explored:
+#   - pre-Ubuntu 16 releases do not contain the android sdk in their apt repos
+#   - the existing ppas containing the sdk are questionable
+#   - ubuntu-make did not seem reliable at the time of writing this
+- name: Download the Android SDK tarball
+  get_url:
+    url: "https://dl.google.com/android/{{ android_download }}"
+    dest: /tmp/android-sdk.tgz
+- name: Verify checksum of Android SDK
+  shell: "sha1sum /tmp/android-sdk.tgz"
+  register: sdk_checksum
+- assert:
+    that:
+      "'{{ android_checksum }}' in sdk_checksum.stdout"
+- name: Unarchive tarball to /opt/android-sdk
+  unarchive:
+    copy: no
+    src: /tmp/android-sdk.tgz
+    dest: /opt
+    creates: "{{ android_home }}"
+    owner: "{{ jenkins_user }}"
+    group: "{{ jenkins_group }}" 
+  become: yes
+# Use the android sdk manager to install the build targets necessary for the edx mobile app
+- name: Install Android API levels
+  shell: "echo 'y' | {{ android_home }}/tools/android update sdk --no-ui --filter {{ ','.join(android_build_targets) }}"
+  become: yes
+  become_user: "{{ jenkins_user }}"

playbooks/roles/jenkins_worker/meta/main.yml

@@ -15,3 +15,7 @@ dependencies:
   # dependencies for sitespeed worker
   - role: sitespeedio
     when: sitespeed_worker is defined
+
+  # dependencies for android worker
+  - role: android_sdk
+    when: android_worker is defined

playbooks/roles/jenkins_worker/tasks/main.yml

@@ -20,3 +20,5 @@
   when: platform_worker is defined
 - include: test_sitespeed_worker.yml
   when: sitespeed_worker is defined
+- include: test_android_worker.yml
+  when: android_worker is defined

playbooks/roles/jenkins_worker/tasks/test_android_worker.yml

+---
+# Test that the Android sdk has been installed to the correct location
+- name: Verify Android SDK is installed
+  shell: "stat {{ android_home }}/tools/android"
+  register: android_version
+- assert:
+    that:
+       - "android_version.rc == 0"
+# Test that the necessary build targets for building the edx app have
+# been installed.
+- name: Verify correct Android build targets installed
+  shell: "{{ android_home }}/tools/android list target |tr '\n' ' '"
+  register: build_targets
+- with_items: "{{ android_build_targets }}"
+  assert:
+    that:
+      - "'{{ item }}' in build_targets.stdout"

util/packer/jenkins_worker_android.json

+{
+  "variables": {
+    "aws_access_key": "{{env `AWS_ACCESS_KEY_ID`}}",
+    "aws_secret_key": "{{env `AWS_SECRET_ACCESS_KEY`}}",
+    "playbook_remote_dir": "/tmp/packer-edx-playbooks",
+    "ami": "{{env `JENKINS_WORKER_AMI`}}",
+    "delete_or_keep": "{{env `DELETE_OR_KEEP_AMI`}}",
+    "remote_branch": "{{env `REMOTE_BRANCH`}}"
+  },
+  "builders": [{
+    "type": "amazon-ebs",
+    "access_key": "{{user `aws_access_key`}}",
+    "secret_key": "{{user `aws_secret_key`}}",
+    "ami_name": "jenkins_worker_android-{{isotime | clean_ami_name}}",
+    "instance_type": "m3.large",
+    "region": "us-east-1",
+    "source_ami": "{{user `ami`}}",
+    "ssh_username": "ubuntu",
+    "ami_description": "jenkins worker android",
+    "iam_instance_profile": "jenkins-worker",
+    "security_group_id": "sg-75af5e18",
+    "tags": {
+      "delete_or_keep": "{{user `delete_or_keep`}}"
+    }
+  }],
+  "provisioners": [{
+    "type": "shell",
+    "inline": ["rm -rf {{user `playbook_remote_dir`}}",
+      "mkdir {{user `playbook_remote_dir`}}"]
+  }, {
+    "type": "file",
+    "source": "../../playbooks/run_role.yml",
+    "destination": "{{user `playbook_remote_dir`}}/run_role.yml"
+  }, {
+    "type": "file",
+    "source": "../../playbooks/roles",
+    "destination": "{{user `playbook_remote_dir`}}/roles"
+  }, {
+    "type": "file",
+    "source": "../../playbooks/edx-east",
+    "destination": "{{user `playbook_remote_dir`}}/edx-east"
+  }, {
+    "type": "file",
+    "source": "../../util/install/ansible-bootstrap.sh",
+    "destination": "{{user `playbook_remote_dir`}}/ansible-bootstrap.sh"
+  }, {
+    "type": "shell",
+    "inline": ["cd {{user `playbook_remote_dir`}}",
+      "export CONFIGURATION_VERSION='{{user `remote_branch`}}'",
+      "sudo bash ./ansible-bootstrap.sh" ]
+  }, {
+    "type": "ansible-local",
+    "playbook_file": "../../playbooks/edx-east/jenkins_worker_android.yml",
+    "playbook_dir": "../../playbooks",
+    "command": "source  /edx/app/edx_ansible/venvs/edx_ansible/bin/activate && ansible-playbook",
+    "inventory_groups": "jenkins_worker",
+    "extra_arguments": [ "-vvv" ]
+  }]
+}