Examples with SetLabelsInstanceRequest com.google.cloud.compute.v1.SetLabelsInstanceRequest used on opensource projects

Example 1 with SetLabelsInstanceRequest

use of com.google.cloud.compute.v1.SetLabelsInstanceRequest in project java-docs-samples by GoogleCloudPlatform.

the class AutoLabelInstance method accept.

@Override
public void accept(CloudEvent event) throws Exception {
    // Extract CloudEvent data
    if (event.getData() != null) {
        String cloudEventData = new String(event.getData().toBytes(), StandardCharsets.UTF_8);
        // Convert data to JSON
        JsonObject eventData;
        try {
            Gson gson = new Gson();
            eventData = gson.fromJson(cloudEventData, JsonObject.class);
        } catch (JsonSyntaxException error) {
            throw new RuntimeException("CloudEvent data is not valid JSON: " + error.getMessage());
        }
        // Extract the Cloud Audit Logging entry from the data's protoPayload
        JsonObject payload = eventData.getAsJsonObject("protoPayload");
        JsonObject auth = payload.getAsJsonObject("authenticationInfo");
        // Extract the email address of the authenticated user
        // (or service account on behalf of third party principal) making the request
        String creator = auth.get("principalEmail").getAsString();
        if (creator == null) {
            throw new RuntimeException("`principalEmail` not found in protoPayload.");
        }
        // Format the 'creator' parameter to match GCE label validation requirements
        creator = creator.toLowerCase().replaceAll("\\W", "-");
        // Get relevant VM instance details from the CloudEvent `subject` property
        // Example: compute.googleapis.com/projects/<PROJECT>/zones/<ZONE>/instances/<INSTANCE>
        String subject = event.getSubject();
        if (subject == null || subject == "") {
            throw new RuntimeException("Missing CloudEvent `subject`.");
        }
        String[] params = subject.split("/");
        // Validate data
        if (params.length < 7) {
            throw new RuntimeException("Can not parse resource from CloudEvent `subject`: " + subject);
        }
        String project = params[2];
        String zone = params[4];
        String instanceName = params[6];
        // Instantiate the Compute Instances client
        try (InstancesClient instancesClient = InstancesClient.create()) {
            // Get the newly-created VM instance's label fingerprint
            // This is required by the Compute Engine API to prevent duplicate labels
            GetInstanceRequest getInstanceRequest = GetInstanceRequest.newBuilder().setInstance(instanceName).setProject(project).setZone(zone).build();
            Instance instance = instancesClient.get(getInstanceRequest);
            String fingerPrint = instance.getLabelFingerprint();
            // Label the instance with its creator
            SetLabelsInstanceRequest setLabelRequest = SetLabelsInstanceRequest.newBuilder().setInstance(instanceName).setProject(project).setZone(zone).setInstancesSetLabelsRequestResource(InstancesSetLabelsRequest.newBuilder().putLabels("creator", creator).setLabelFingerprint(fingerPrint).build()).build();
            instancesClient.setLabels(setLabelRequest);
            logger.info(String.format("Adding label, \"{'creator': '%s'}\", to instance, \"%s\".", creator, instanceName));
        } catch (Exception error) {
            throw new RuntimeException(String.format("Error trying to label VM instance, %s: %s", instanceName, error.toString()));
        }
    }
}