# 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: "creating directory for pod logs"
  file:
    path: "{{ logs_dir }}/pod-logs"
    state: directory

- name: "creating directory for failed pod logs"
  file:
    path: "{{ logs_dir }}/pod-logs/failed-pods"
    state: directory

- name: "retrieve all container logs, current and previous (if they exist)"
  shell: |-
          set -e
          PARALLELISM_FACTOR=2
          function get_namespaces () {
            kubectl get namespaces -o name | awk -F '/' '{ print $NF }'
          }
          function get_pods () {
            NAMESPACE=$1
            kubectl get pods -n ${NAMESPACE} -o name | awk -F '/' '{ print $NF }' | xargs -L1 -P 1 -I {} echo ${NAMESPACE} {}
          }
          export -f get_pods
          function get_pod_logs () {
            NAMESPACE=${1% *}
            POD=${1#* }
            INIT_CONTAINERS=$(kubectl get pod $POD -n ${NAMESPACE} -o json | jq -r '.spec.initContainers[]?.name')
            CONTAINERS=$(kubectl get pod $POD -n ${NAMESPACE} -o json | jq -r '.spec.containers[].name')
            for CONTAINER in ${INIT_CONTAINERS} ${CONTAINERS}; do
              echo "${NAMESPACE}/${POD}/${CONTAINER}"
              mkdir -p "{{ logs_dir }}/pod-logs/${NAMESPACE}/${POD}"
              mkdir -p "{{ logs_dir }}/pod-logs/failed-pods/${NAMESPACE}/${POD}"
              kubectl logs ${POD} -n ${NAMESPACE} -c ${CONTAINER} > "{{ logs_dir }}/pod-logs/${NAMESPACE}/${POD}/${CONTAINER}.txt"
              kubectl logs --previous ${POD} -n ${NAMESPACE} -c ${CONTAINER} > "{{ logs_dir }}/pod-logs/failed-pods/${NAMESPACE}/${POD}/${CONTAINER}.txt"
            done
          }
          export -f get_pod_logs
          get_namespaces | \
            xargs -r -n 1 -P ${PARALLELISM_FACTOR} -I {} bash -c 'get_pods "$@"' _ {} | \
            xargs -r -n 2 -P ${PARALLELISM_FACTOR} -I {} bash -c 'get_pod_logs "$@"' _ {}
  args:
    executable: /bin/bash
  ignore_errors: True

- name: "Downloads pod logs to executor"
  synchronize:
    src: "{{ logs_dir }}/pod-logs"
    dest: "{{ zuul.executor.log_root }}/{{ inventory_hostname }}"
    mode: pull
  ignore_errors: True
...