main.yml

# Copyright 2021 The Vitess Authors.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#    http://www.apache.org/licenses/LICENSE-2.0
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

---
- name: Stop existing Vitess to build a new one
  ansible.builtin.include_tasks: clean.yml
- name: Update Vitess
  become: true
  become_user: root
  block:
    # Building Vitess from source is the single most expensive step of a
    # benchmark run (several minutes). When the same commit is benchmarked
    # across several workloads, the cluster is torn down and recreated between
    # each workload even though the exact same binaries are needed. We record
    # the ref+Go version that is currently installed in a marker file and skip
    # the fetch/build when it already matches (and the binaries are still
    # present). The teardown no longer removes the vt* binaries, so they survive
    # between workloads of the same commit.
    - name: Read the installed Vitess build marker
      ansible.builtin.slurp:
        src: /usr/local/vitess-build.ref
      register: vitess_build_marker
      failed_when: false
      changed_when: false

    - name: Check whether the vtgate binary is present
      ansible.builtin.stat:
        path: /usr/local/bin/vtgate
      register: vitess_vtgate_binary

    - name: Determine whether the installed Vitess build can be reused
      ansible.builtin.set_fact:
        vitess_build_current: >-
          {{
            vitess_vtgate_binary.stat.exists
            and vitess_build_marker.content is defined
            and (vitess_build_marker.content | b64decode | trim)
                == (vitess_git_version | default('') ~ '-' ~ golang_gover | default(''))
          }}

    - name: Report whether the Vitess build is reused
      ansible.builtin.debug:
        msg: >-
          Vitess build {{ vitess_git_version | default('') }}-{{ golang_gover | default('') }}
          reuse={{ vitess_build_current }}

    - name: Build and install Vitess
      when: not (vitess_build_current | bool)
      block:
        # Remove the marker first so an interrupted build cannot leave a stale
        # marker that would make the next run wrongly skip the build.
        - name: Invalidate the Vitess build marker before building
          ansible.builtin.file:
            path: /usr/local/vitess-build.ref
            state: absent

        - name: Fetch Updated Vitess
          ansible.builtin.include_tasks: install_vitess.yml
        - name: Tmp directory gopath
          become: true
          become_user: root
          ansible.builtin.file:
            state: directory
            path: "{{ item }}"
            mode: "0755"
          with_items:
            - /root/tmp

        - name: Remove Vitess binaries
          ansible.builtin.shell: |
            rm -f /usr/local/bin/vt*
        - name: Install Vitess Binaries
          ansible.builtin.shell: |
            export TMPDIR=/root/tmp
            cd /go/src/vitess.io/vitess
            NOVTADMINBUILD=1 make install PREFIX=/usr/local VTROOT=/go/src/vitess.io/vitess
          changed_when: false

        - name: Install Vitess Other Binaries
          ansible.builtin.shell: |
            cd /go/src/vitess.io/vitess
            cp bin/vtctl /usr/local/bin/
          changed_when: false

        # Record the ref+Go version only after a fully successful install.
        - name: Record the installed Vitess build marker
          ansible.builtin.copy:
            dest: /usr/local/vitess-build.ref
            content: "{{ vitess_git_version | default('') }}-{{ golang_gover | default('') }}"
            mode: "0644"

- name: Disbale AppArmor
  block:
    - name: Link apparmor
      ansible.builtin.file:
        state: link
        src: /etc/apparmor.d/usr.sbin.mysqld
        dest: /etc/apparmor.d/disable/
        owner: root
        group: root
      ignore_errors: true
      changed_when: false

    - name: Disable apparmor for mysqld
      ansible.builtin.command: apparmor_parser -R /etc/apparmor.d/usr.sbin.mysqld
      changed_when: false
      ignore_errors: true