# Copyright 2015 Google Inc.
#
# 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

# This file configures the bookshelf task worker. The worker is responsible
# for processing book requests and updating book information.

# The bookshelf worker controller ensures that at least 3 instances of the
# bookshelf worker pod are running on the cluster.
# For more info about Pods see:
#   https://cloud.google.com/container-engine/docs/pods/
# For more info about Replication Controllers:
#   https://cloud.google.com/container-engine/docs/replicationcontrollers/
apiVersion: v1
kind: ReplicationController
metadata:
  name: bookshelf-worker
spec:
  replicas: 2
  template:
    metadata:
      labels:
        app: bookshelf
        tier: worker
    spec:
      containers:
      - name: bookshelf-app
        # Replace $GCLOUD_PROJECT with your project ID or use `make template`.
        image: gcr.io/$GCLOUD_PROJECT/bookshelf
        # This setting makes nodes pull the docker image every time before
        # starting the pod. This is useful when debugging, but should be turned
        # off in production.
        imagePullPolicy: Always
        # The PROCESSES environment variable is used by Honcho in the
        # Dockerfile's CMD to control which processes are started. In this
        # case, only the worker process is needed.
        env:
        - name: PROCESSES
          value: worker
