Example #1
0
  /**
   * Create new pod and pass environment variables.
   *
   * @param memberContext
   * @param kubernetesApi
   * @param kubernetesClusterContext
   * @throws KubernetesClientException
   */
  private void createPod(
      ClusterContext clusterContext,
      MemberContext memberContext,
      KubernetesApiClient kubernetesApi,
      KubernetesClusterContext kubernetesClusterContext)
      throws KubernetesClientException {

    String applicationId = memberContext.getApplicationId();
    String cartridgeType = memberContext.getCartridgeType();
    String clusterId = memberContext.getClusterId();
    String memberId = memberContext.getMemberId();

    if (log.isInfoEnabled()) {
      log.info(
          String.format(
              "Creating kubernetes pod: [application] %s [cartridge] %s [member] %s",
              applicationId, cartridgeType, memberId));
    }

    Partition partition = memberContext.getPartition();
    if (partition == null) {
      String message =
          String.format(
              "Partition not found in member context: [application] %s [cartridge] %s "
                  + "[member] %s ",
              applicationId, cartridgeType, memberId);
      log.error(message);
      throw new RuntimeException(message);
    }

    Cartridge cartridge = CloudControllerContext.getInstance().getCartridge(cartridgeType);
    if (cartridge == null) {
      String message = "Could not find cartridge: [cartridge] " + cartridgeType;
      log.error(message);
      throw new RuntimeException(message);
    }

    // Set default values to zero to avoid cpu and memory restrictions
    int cpu = Integer.getInteger(KUBERNETES_CONTAINER_CPU_DEFAULT, 0);
    int memory = Integer.getInteger(KUBERNETES_CONTAINER_MEMORY_DEFAULT, 0);
    Property cpuProperty = cartridge.getProperties().getProperty(KUBERNETES_CONTAINER_CPU);
    if (cpuProperty != null) {
      cpu = Integer.parseInt(cpuProperty.getValue());
    }
    Property memoryProperty = cartridge.getProperties().getProperty(KUBERNETES_CONTAINER_MEMORY);
    if (memoryProperty != null) {
      memory = Integer.parseInt(memoryProperty.getValue());
    }

    IaasProvider iaasProvider =
        CloudControllerContext.getInstance()
            .getIaasProviderOfPartition(cartridge.getUuid(), partition.getUuid());
    if (iaasProvider == null) {
      String message = "Could not find iaas provider: [partition] " + partition.getUuid();
      log.error(message);
      throw new RuntimeException(message);
    }

    // Add dynamic payload to the member context
    memberContext.setDynamicPayload(payload.toArray(new NameValuePair[payload.size()]));

    // Create pod
    long podSeqNo = kubernetesClusterContext.getPodSeqNo().incrementAndGet();
    String podId = "pod" + "-" + podSeqNo;
    String podLabel = DigestUtils.md5Hex(clusterId);
    String dockerImage = iaasProvider.getImage();
    List<EnvVar> environmentVariables =
        KubernetesIaasUtil.prepareEnvironmentVariables(clusterContext, memberContext);

    List<ContainerPort> ports =
        KubernetesIaasUtil.convertPortMappings(Arrays.asList(cartridge.getPortMappings()));

    log.info(
        String.format(
            "Starting pod: [application] %s [cartridge] %s [member] %s "
                + "[cpu] %d [memory] %d MB",
            memberContext.getApplicationId(),
            memberContext.getCartridgeType(),
            memberContext.getMemberId(),
            cpu,
            memory));

    kubernetesApi.createPod(podId, podLabel, dockerImage, cpu, memory, ports, environmentVariables);

    log.info(
        String.format(
            "Pod started successfully: [application] %s [cartridge] %s [member] %s "
                + "[pod] %s [cpu] %d [memory] %d MB",
            memberContext.getApplicationId(),
            memberContext.getCartridgeType(),
            memberContext.getMemberId(),
            podId,
            cpu,
            memory));

    // Add pod id to member context
    memberContext.setKubernetesPodId(podId);
    memberContext.setKubernetesPodLabel(podLabel);

    // Create instance metadata
    InstanceMetadata instanceMetadata = new InstanceMetadata();
    instanceMetadata.setImageId(dockerImage);
    instanceMetadata.setCpu(cpu);
    instanceMetadata.setRam(memory);
    memberContext.setInstanceMetadata(instanceMetadata);

    // Persist cloud controller context
    CloudControllerContext.getInstance().persist();
  }