path: root/roles/lib_openshift/src/lib/deploymentconfig.py

# pylint: skip-file
# flake8: noqa


# pylint: disable=too-many-public-methods
class DeploymentConfig(Yedit):
    ''' Class to model an openshift DeploymentConfig'''
    default_deployment_config = '''
apiVersion: v1
kind: DeploymentConfig
metadata:
  name: default_dc
  namespace: default
spec:
  replicas: 0
  selector:
    default_dc: default_dc
  strategy:
    resources: {}
    rollingParams:
      intervalSeconds: 1
      maxSurge: 0
      maxUnavailable: 25%
      timeoutSeconds: 600
      updatePercent: -25
      updatePeriodSeconds: 1
    type: Rolling
  template:
    metadata:
    spec:
      containers:
      - env:
        - name: default
          value: default
        image: default
        imagePullPolicy: IfNotPresent
        name: default_dc
        ports:
        - containerPort: 8000
          hostPort: 8000
          protocol: TCP
          name: default_port
        resources: {}
        terminationMessagePath: /dev/termination-log
      dnsPolicy: ClusterFirst
      hostNetwork: true
      nodeSelector:
        type: compute
      restartPolicy: Always
      securityContext: {}
      serviceAccount: default
      serviceAccountName: default
      terminationGracePeriodSeconds: 30
  triggers:
  - type: ConfigChange
'''

    replicas_path = "spec.replicas"
    env_path = "spec.template.spec.containers[0].env"
    volumes_path = "spec.template.spec.volumes"
    container_path = "spec.template.spec.containers"
    volume_mounts_path = "spec.template.spec.containers[0].volumeMounts"

    def __init__(self, content=None):
        ''' Constructor for deploymentconfig '''
        if not content:
            content = DeploymentConfig.default_deployment_config

        super(DeploymentConfig, self).__init__(content=content)

    def add_env_value(self, key, value):
        ''' add key, value pair to env array '''
        rval = False
        env = self.get_env_vars()
        if env:
            env.append({'name': key, 'value': value})
            rval = True
        else:
            result = self.put(DeploymentConfig.env_path, {'name': key, 'value': value})
            rval = result[0]

        return rval

    def exists_env_value(self, key, value):
        ''' return whether a key, value  pair exists '''
        results = self.get_env_vars()
        if not results:
            return False

        for result in results:
            if result['name'] == key and result['value'] == value:
                return True

        return False

    def exists_env_key(self, key):
        ''' return whether a key, value  pair exists '''
        results = self.get_env_vars()
        if not results:
            return False

        for result in results:
            if result['name'] == key:
                return True

        return False

    def get_env_var(self, key):
        '''return a environment variables '''
        results = self.get(DeploymentConfig.env_path) or []
        if not results:
            return None

        for env_var in results:
            if env_var['name'] == key:
                return env_var

        return None

    def get_env_vars(self):
        '''return a environment variables '''
        return self.get(DeploymentConfig.env_path) or []

    def delete_env_var(self, keys):
        '''delete a list of keys '''
        if not isinstance(keys, list):
            keys = [keys]

        env_vars_array = self.get_env_vars()
        modified = False
        idx = None
        for key in keys:
            for env_idx, env_var in enumerate(env_vars_array):
                if env_var['name'] == key:
                    idx = env_idx
                    break

            if idx:
                modified = True
                del env_vars_array[idx]

        if modified:
            return True

        return False

    def update_env_var(self, key, value):
        '''place an env in the env var list'''

        env_vars_array = self.get_env_vars()
        idx = None
        for env_idx, env_var in enumerate(env_vars_array):
            if env_var['name'] == key:
                idx = env_idx
                break

        if idx:
            env_vars_array[idx]['value'] = value
        else:
            self.add_env_value(key, value)

        return True

    def exists_volume_mount(self, volume_mount):
        ''' return whether a volume mount exists '''
        exist_volume_mounts = self.get_volume_mounts()

        if not exist_volume_mounts:
            return False

        volume_mount_found = False
        for exist_volume_mount in exist_volume_mounts:
            if exist_volume_mount['name'] == volume_mount['name']:
                volume_mount_found = True
                break

        return volume_mount_found

    def exists_volume(self, volume):
        ''' return whether a volume exists '''
        exist_volumes = self.get_volumes()

        volume_found = False
        for exist_volume in exist_volumes:
            if exist_volume['name'] == volume['name']:
                volume_found = True
                break

        return volume_found

    def find_volume_by_name(self, volume, mounts=False):
        ''' return the index of a volume '''
        volumes = []
        if mounts:
            volumes = self.get_volume_mounts()
        else:
            volumes = self.get_volumes()
        for exist_volume in volumes:
            if exist_volume['name'] == volume['name']:
                return exist_volume

        return None

    def get_replicas(self):
        ''' return replicas setting '''
        return self.get(DeploymentConfig.replicas_path)

    def get_volume_mounts(self):
        '''return volume mount information '''
        return self.get_volumes(mounts=True)

    def get_volumes(self, mounts=False):
        '''return volume mount information '''
        if mounts:
            return self.get(DeploymentConfig.volume_mounts_path) or []

        return self.get(DeploymentConfig.volumes_path) or []

    def delete_volume_by_name(self, volume):
        '''delete a volume '''
        modified = False
        exist_volume_mounts = self.get_volume_mounts()
        exist_volumes = self.get_volumes()
        del_idx = None
        for idx, exist_volume in enumerate(exist_volumes):
            if 'name' in exist_volume and exist_volume['name'] == volume['name']:
                del_idx = idx
                break

        if del_idx != None:
            del exist_volumes[del_idx]
            modified = True

        del_idx = None
        for idx, exist_volume_mount in enumerate(exist_volume_mounts):
            if 'name' in exist_volume_mount and exist_volume_mount['name'] == volume['name']:
                del_idx = idx
                break

        if del_idx != None:
            del exist_volume_mounts[idx]
            modified = True

        return modified

    def add_volume_mount(self, volume_mount):
        ''' add a volume or volume mount to the proper location '''
        exist_volume_mounts = self.get_volume_mounts()

        if not exist_volume_mounts and volume_mount:
            self.put(DeploymentConfig.volume_mounts_path, [volume_mount])
        else:
            exist_volume_mounts.append(volume_mount)

    def add_volume(self, volume):
        ''' add a volume or volume mount to the proper location '''
        exist_volumes = self.get_volumes()
        if not volume:
            return

        if not exist_volumes:
            self.put(DeploymentConfig.volumes_path, [volume])
        else:
            exist_volumes.append(volume)

    def update_replicas(self, replicas):
        ''' update replicas value '''
        self.put(DeploymentConfig.replicas_path, replicas)

    def update_volume(self, volume):
        '''place an env in the env var list'''
        exist_volumes = self.get_volumes()

        if not volume:
            return False

        # update the volume
        update_idx = None
        for idx, exist_vol in enumerate(exist_volumes):
            if exist_vol['name'] == volume['name']:
                update_idx = idx
                break

        if update_idx != None:
            exist_volumes[update_idx] = volume
        else:
            self.add_volume(volume)

        return True

    def update_volume_mount(self, volume_mount):
        '''place an env in the env var list'''
        modified = False

        exist_volume_mounts = self.get_volume_mounts()

        if not volume_mount:
            return False

        # update the volume mount
        for exist_vol_mount in exist_volume_mounts:
            if exist_vol_mount['name'] == volume_mount['name']:
                if 'mountPath' in exist_vol_mount and \
                   str(exist_vol_mount['mountPath']) != str(volume_mount['mountPath']):
                    exist_vol_mount['mountPath'] = volume_mount['mountPath']
                    modified = True
                break

        if not modified:
            self.add_volume_mount(volume_mount)
            modified = True

        return modified

    def needs_update_volume(self, volume, volume_mount):
        ''' verify a volume update is needed '''
        exist_volume = self.find_volume_by_name(volume)
        exist_volume_mount = self.find_volume_by_name(volume, mounts=True)
        results = []
        results.append(exist_volume['name'] == volume['name'])

        if 'secret' in volume:
            results.append('secret' in exist_volume)
            results.append(exist_volume['secret']['secretName'] == volume['secret']['secretName'])
            results.append(exist_volume_mount['name'] == volume_mount['name'])
            results.append(exist_volume_mount['mountPath'] == volume_mount['mountPath'])

        elif 'emptyDir' in volume:
            results.append(exist_volume_mount['name'] == volume['name'])
            results.append(exist_volume_mount['mountPath'] == volume_mount['mountPath'])

        elif 'persistentVolumeClaim' in volume:
            pvc = 'persistentVolumeClaim'
            results.append(pvc in exist_volume)
            if results[-1]:
                results.append(exist_volume[pvc]['claimName'] == volume[pvc]['claimName'])

                if 'claimSize' in volume[pvc]:
                    results.append(exist_volume[pvc]['claimSize'] == volume[pvc]['claimSize'])

        elif 'hostpath' in volume:
            results.append('hostPath' in exist_volume)
            results.append(exist_volume['hostPath']['path'] == volume_mount['mountPath'])

        return not all(results)

    def needs_update_replicas(self, replicas):
        ''' verify whether a replica update is needed '''
        current_reps = self.get(DeploymentConfig.replicas_path)
        return not current_reps == replicas