/**
* 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();
}
/**
* Starts a container via kubernetes for the given member context.
*
* @param memberContext
* @return
* @throws CartridgeNotFoundException
*/
public MemberContext startContainer(MemberContext memberContext)
throws CartridgeNotFoundException {
Lock lock = null;
try {
lock = CloudControllerContext.getInstance().acquireMemberContextWriteLock();
handleNullObject(memberContext, "member context is null");
log.info(
String.format(
"Starting container: [application] %s [cartridge] %s [member] %s",
memberContext.getApplicationId(),
memberContext.getCartridgeType(),
memberContext.getMemberId()));
// Validate cluster id
String clusterId = memberContext.getClusterId();
String memberId = memberContext.getMemberId();
handleNullObject(clusterId, "cluster id is null in member context");
// Validate cluster context
ClusterContext clusterContext =
CloudControllerContext.getInstance().getClusterContext(clusterId);
handleNullObject(
clusterContext,
String.format(
"Cluster context not found: [application] %s [cartridge] %s " + "[cluster] %s",
memberContext.getApplicationId(), memberContext.getCartridgeType(), clusterId));
// Validate partition
Partition partition = memberContext.getPartition();
handleNullObject(
partition,
String.format(
"partition not found in member context: [application] %s "
+ "[cartridge] %s [member] %s",
memberContext.getApplicationId(),
memberContext.getCartridgeType(),
memberContext.getMemberId()));
// Validate cartridge
String cartridgeType = clusterContext.getCartridgeUuid();
Cartridge cartridge = CloudControllerContext.getInstance().getCartridge(cartridgeType);
if (cartridge == null) {
String msg =
String.format(
"Cartridge not found: [application] %s [cartridge] %s",
memberContext.getApplicationId(), memberContext.getCartridgeType());
log.error(msg);
throw new CartridgeNotFoundException(msg);
}
String kubernetesClusterId = partition.getKubernetesClusterId();
clusterContext.setKubernetesClusterId(kubernetesClusterId);
KubernetesCluster kubernetesCluster =
CloudControllerContext.getInstance().getKubernetesCluster(kubernetesClusterId);
handleNullObject(
kubernetesCluster,
"kubernetes cluster not found: "
+ "[kubernetes-cluster] "
+ kubernetesClusterId
+ " [cluster] "
+ clusterId
+ " [member] "
+ memberId);
// Prepare kubernetes context
String kubernetesMasterIp = kubernetesCluster.getKubernetesMaster().getPrivateIPAddress();
PortRange kubernetesPortRange = kubernetesCluster.getPortRange();
String kubernetesMasterPort =
CloudControllerUtil.getProperty(
kubernetesCluster.getKubernetesMaster().getProperties(),
StratosConstants.KUBERNETES_MASTER_PORT,
StratosConstants.KUBERNETES_MASTER_DEFAULT_PORT);
// Add kubernetes cluster payload parameters to payload
if ((kubernetesCluster.getProperties() != null)
&& (kubernetesCluster.getProperties().getProperties() != null)) {
for (Property property : kubernetesCluster.getProperties().getProperties()) {
if (property != null) {
if (property.getName().startsWith(PAYLOAD_PARAMETER_PREFIX)) {
String name = property.getName().replace(PAYLOAD_PARAMETER_PREFIX, "");
payload.add(new NameValuePair(name, property.getValue()));
}
}
}
}
KubernetesClusterContext kubernetesClusterContext =
getKubernetesClusterContext(
kubernetesClusterId,
kubernetesMasterIp,
kubernetesMasterPort,
kubernetesPortRange.getUpper(),
kubernetesPortRange.getLower());
// Generate kubernetes service ports and update port mappings in cartridge
generateKubernetesServicePorts(
clusterContext.getApplicationUuid(),
clusterContext.getClusterId(),
kubernetesClusterContext,
cartridge);
// Create kubernetes services for port mappings
KubernetesApiClient kubernetesApi = kubernetesClusterContext.getKubApi();
createKubernetesServices(
kubernetesApi, clusterContext, kubernetesCluster, kubernetesClusterContext);
// Create pod
createPod(clusterContext, memberContext, kubernetesApi, kubernetesClusterContext);
// Wait for pod status to be changed to running
Pod pod = waitForPodToBeActivated(memberContext, kubernetesApi);
// Update member context
updateMemberContext(memberContext, pod, kubernetesCluster);
log.info(
String.format(
"Container started successfully: [application] %s [cartridge] %s [member] %s "
+ "[pod] %s [cpu] %d [memory] %d MB",
memberContext.getApplicationId(),
memberContext.getCartridgeType(),
memberContext.getMemberId(),
memberContext.getKubernetesPodId(),
memberContext.getInstanceMetadata().getCpu(),
memberContext.getInstanceMetadata().getRam()));
return memberContext;
} catch (Exception e) {
String msg =
String.format(
"Could not start container: [application] %s [cartridge] %s [member] %s",
memberContext.getApplicationId(),
memberContext.getCartridgeType(),
memberContext.getMemberId());
log.error(msg, e);
throw new RuntimeException(msg, e);
} finally {
if (lock != null) {
CloudControllerContext.getInstance().releaseWriteLock(lock);
}
}
}