Example usage for com.amazonaws.services.cloudformation AmazonCloudFormationAsyncClient describeStacks

Introduction

In this page you can find the example usage for com.amazonaws.services.cloudformation AmazonCloudFormationAsyncClient describeStacks.

Prototype

DescribeStacksResult describeStacks(DescribeStacksRequest describeStacksRequest);

Source Link

Document

Returns the description for the specified stack; if no stack name was specified, then it returns the description for all the stacks created.

Usage

From source file:com.mweagle.tereus.aws.CloudFormation.java

License:Open Source License

protected Optional<DescribeStacksResult> describeStack(final AmazonCloudFormationAsyncClient awsClient,
        final String stackName, Logger logger) throws Exception {
    final DescribeStacksRequest describeStacksRequest = new DescribeStacksRequest();
    describeStacksRequest.setStackName(stackName);
    return Optional.of(awsClient.describeStacks(describeStacksRequest));
}

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From source file:com.mweagle.tereus.commands.pipelines.UpdatePipeline.java

License:Open Source License

protected void publishGlobals(ScriptEngine engine) {
    super.publishGlobals(engine);

    // Publish a function that accepts a stack target name, defined by the patch
    // file, that represents the target.  We'll push all this
    Function<String, String> fnStackInfo = (stackName) -> {
        // Get the information...
        final GetTemplateRequest templateRequest = new GetTemplateRequest().withStackName(stackName);
        final AmazonCloudFormationAsyncClient awsClient = new AmazonCloudFormationAsyncClient(
                super.getAwsCredentials());
        awsClient.setRegion(super.getRegion());
        final GetTemplateResult stackTemplateResult = awsClient.getTemplate(templateRequest);

        // Get the stack info and return it
        final DescribeStacksRequest describeRequest = new DescribeStacksRequest().withStackName(stackName);
        final DescribeStacksResult describeResult = awsClient.describeStacks(describeRequest);

        // And finally the tags and parameters
        final Stack stackInfo = !describeResult.getStacks().isEmpty() ? describeResult.getStacks().get(0)
                : null;/*from   w  w w .  j  a  va  2  s . com*/
        final Map<String, Object> tags = (stackInfo != null)
                ? stackInfo.getTags().stream().collect(Collectors.toMap(Tag::getKey, Tag::getValue))
                : Collections.emptyMap();

        final Map<String, Object> params = (stackInfo != null)
                ? stackInfo.getParameters().stream()
                        .collect(Collectors.toMap(Parameter::getParameterKey, Parameter::getParameterValue))
                : Collections.emptyMap();

        HashMap<String, Object> results = new HashMap<>();
        results.put("tags", tags);
        results.put("params", params);
        results.put("stack", stackInfo);
        results.put("template", stackTemplateResult.getTemplateBody().toString());
        Gson gson = new Gson();
        return gson.toJson(results);
    };
    engine.put("TargetStackInfoImpl", fnStackInfo);

    Supplier<String> fnArgs = () -> {
        HashMap<String, Map<String, Object>> args = new HashMap<>();
        args.put("arguments", this.arguments);
        Gson gson = new Gson();
        return gson.toJson(args);
    };
    engine.put("ArgumentsImpl", fnArgs);
}

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From source file:com.mweagle.tereus.commands.UpdateCommand.java

License:Open Source License

protected void updateStack(UpdateInput updateInput, String transformedTemplate, String stackTargetName)
        throws UnsupportedEncodingException {
    if (updateInput.dryRun) {
        updateInput.logger.info("Dry run requested (-n/--noop). Stack update bypassed.");
    } else {//from   ww  w.  j a  v  a  2  s . c  om
        // Fetch the stack parameters
        final DescribeStacksRequest stackRequest = new DescribeStacksRequest().withStackName(stackTargetName);
        final AmazonCloudFormationAsyncClient awsClient = new AmazonCloudFormationAsyncClient(
                updateInput.awsCredentials);
        awsClient.setRegion(updateInput.awsRegion);
        final DescribeStacksResult result = awsClient.describeStacks(stackRequest);
        final Stack existantStack = result.getStacks().get(0);

        final Optional<Parameter> s3Bucket = findNamedParameter(CONSTANTS.PARAMETER_NAMES.S3_BUCKET_NAME,
                existantStack.getParameters());

        Preconditions.checkArgument(s3Bucket.isPresent(),
                "Failed to determine S3 BucketName from existant template via parameter name: "
                        + CONSTANTS.PARAMETER_NAMES.S3_BUCKET_NAME);

        // Super, now put the new content to S3, update the parameter list
        // to include the new URL, and submit the updated stack.
        final byte[] templateBytes = transformedTemplate.getBytes("UTF-8");
        final InputStream is = new ByteArrayInputStream(templateBytes);
        final String templateDigest = DigestUtils.sha256Hex(templateBytes);
        final String keyName = String.format("%s-tereus.cf.template", templateDigest);

        try (S3Resource resource = new S3Resource(s3Bucket.get().getParameterValue(), keyName, is,
                Optional.of(Long.valueOf(templateBytes.length)))) {
            // Upload the template
            resource.upload();

            // Go ahead and create the stack.
            final UpdateStackRequest request = new UpdateStackRequest().withStackName(stackTargetName);
            request.setTemplateURL(resource.getResourceURL().get());
            request.setParameters(existantStack.getParameters());
            request.setCapabilities(Arrays.asList("CAPABILITY_IAM"));

            updateInput.logger.debug("Updating stack: {}", stackTargetName);
            final Optional<DescribeStacksResult> updateResult = new CloudFormation().updateStack(request,
                    updateInput.awsRegion, updateInput.logger);

            // If everything worked out, then release the template
            // URL s.t. subsequent ASG instantiated instances have access
            // to the template content
            if (updateResult.isPresent()) {
                updateInput.logger.info("Stack successfully updated");
                updateInput.logger.info(updateResult.get().toString());
                resource.setReleased(true);
            }
        }
    }
}

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