Example usage for com.amazonaws.services.ec2.model RunInstancesRequest getSubnetId

Introduction

In this page you can find the example usage for com.amazonaws.services.ec2.model RunInstancesRequest getSubnetId.

Prototype

public String getSubnetId() 

Source Link

Document

[EC2-VPC] The ID of the subnet to launch the instance into.

Usage

From source file:com.rmn.qa.aws.AwsVmManager.java

License:Open Source License

/**
 * Attempts to run the {@link com.amazonaws.services.ec2.model.RunInstancesRequest RunInstancesRequest}, falling
 * back on alternative subnets if capacity is full in the current region.
 *
 * @param   request//from www.j  a  v  a  2  s.  co m
 * @param   requestNumber
 *
 * @return
 *
 * @throws  NodesCouldNotBeStartedException
 */
private RunInstancesResult getResults(final RunInstancesRequest request, int requestNumber)
        throws NodesCouldNotBeStartedException {
    RunInstancesResult runInstancesResult;
    try {
        AmazonEC2Client localClient = getClient();
        if (localClient == null) {
            throw new RuntimeException("The client is not initialized");
        }
        runInstancesResult = localClient.runInstances(request);
    } catch (AmazonServiceException e) {

        // If there is insufficient capacity in this subnet / availability zone, then we want to try other
        // configured subnets
        if ("InsufficientInstanceCapacity".equals(e.getErrorCode())
                || "VolumeTypeNotAvailableInZone".equals(e.getErrorCode())) {
            log.error(String.format("Insufficient capacity in subnet [%s]: %s", request.getSubnetId(), e));
            requestNumber = requestNumber + 1;

            Properties awsProperties = getAwsProperties();
            String fallBackSubnetId = awsProperties
                    .getProperty(region + "_subnet_fallback_id_" + requestNumber);

            // Make sure and only try to recursively loop so as long as we have a valid fallback subnet id.  Logic
            // to also
            // prevent an accidental infinite loop
            if (fallBackSubnetId != null && requestNumber < 5) {
                log.info("Setting fallback subnet: " + fallBackSubnetId);

                // Modify the original request with the new subnet ID we're trying to fallback on
                request.withSubnetId(fallBackSubnetId);
            } else {
                throw new NodesCouldNotBeStartedException(
                        "Sufficient resources were not available in any of the availability zones");
            }

            return getResults(request, requestNumber);
        } else {

            // We got an error other than insufficient capacity, and should just throw it for the caller to handle
            throw e;
        }
    }

    return runInstancesResult;
}

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