private ResourceRequirements getResourceRequirement() {
ResourceRequirements rc = new ResourceRequirements();
Quantity claimSize = new Quantity("100Ki");
HashMap<String, Quantity> requests = new HashMap<>();
requests.put("storage", claimSize);
rc.setRequests(requests);
return rc;
}
/**
* Create new pod
*
* @param podId Identifier of the pod
* @param podLabel Pod name to be used by the pod label
* @param dockerImage Docker image to be used by the pod
* @param cpu Number of cpu cores
* @param memory Memory allocation in megabytes
* @param ports Ports exposed by the pod
* @param environmentVariables Environment variables to be passed to the pod
* @throws KubernetesClientException
*/
@Override
public void createPod(
String podId,
String podLabel,
String dockerImage,
int cpu,
int memory,
List<ContainerPort> ports,
List<EnvVar> environmentVariables)
throws KubernetesClientException {
try {
int memoryInMB = 1024 * 1024 * memory;
if (log.isDebugEnabled()) {
log.debug(
String.format(
"Creating kubernetes pod: [pod-id] %s [pod-name] %s [docker-image] %s "
+ "[cpu] %d [memory] %d MB [ports] %s",
podId, podLabel, dockerImage, cpu, memoryInMB, ports));
}
// Create pod definition
Pod pod = new Pod();
pod.setApiVersion(Pod.ApiVersion.V_1);
pod.setKind(KubernetesConstants.KIND_POD);
pod.setSpec(new PodSpec());
pod.setMetadata(new ObjectMeta());
pod.getMetadata().setName(podId);
Map<String, String> labels = new HashMap<String, String>();
labels.put(KubernetesConstants.LABEL_NAME, podLabel);
pod.getMetadata().setLabels(labels);
// Set container template
Container containerTemplate = new Container();
containerTemplate.setName(podLabel);
containerTemplate.setImage(dockerImage);
containerTemplate.setEnv(environmentVariables);
List<Container> containerTemplates = new ArrayList<Container>();
containerTemplates.add(containerTemplate);
pod.getSpec().setContainers(containerTemplates);
// Set resource limits
ResourceRequirements resources = new ResourceRequirements();
Map<String, Quantity> limits = new HashMap<String, Quantity>();
limits.put(KubernetesConstants.RESOURCE_CPU, new Quantity(String.valueOf(cpu)));
limits.put(KubernetesConstants.RESOURCE_MEMORY, new Quantity(String.valueOf(memoryInMB)));
resources.setLimits(limits);
containerTemplate.setResources(resources);
containerTemplate.setPorts(ports);
containerTemplate.setImagePullPolicy(KubernetesConstants.POLICY_PULL_IF_NOT_PRESENT);
if (environmentVariables != null) {
containerTemplate.setEnv(environmentVariables);
}
// Invoke the api to create the pod
kubernetesClient.createPod(pod);
if (log.isDebugEnabled()) {
log.debug(String.format("Kubernetes pod created successfully: [pod-id] %s", podId));
}
} catch (Exception e) {
String msg = String.format("Could not create kubernetes pod: [pod-id] %s", podId);
log.error(msg, e);
throw new KubernetesClientException(msg, e);
}
}
