Example usage for com.amazonaws.services.elasticloadbalancing.model DescribeLoadBalancersRequest DescribeLoadBalancersRequest

List of usage examples for com.amazonaws.services.elasticloadbalancing.model DescribeLoadBalancersRequest DescribeLoadBalancersRequest

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Introduction

In this page you can find the example usage for com.amazonaws.services.elasticloadbalancing.model DescribeLoadBalancersRequest DescribeLoadBalancersRequest.

Prototype

public DescribeLoadBalancersRequest(java.util.List<String> loadBalancerNames)

Source Link

Document

Constructs a new DescribeLoadBalancersRequest object.

Usage

From source file:br.com.ingenieux.mojo.beanstalk.cmd.dns.BindDomainsCommand.java

License:Apache License

@Override
protected Void executeInternal(BindDomainsContext ctx) throws Exception {
    Map<String, String> recordsToAssign = new LinkedHashMap<String, String>();

    ctx.singleInstance = isSingleInstance(ctx.getCurEnv());

    /**/*from  w ww .  j  av a2 s.co m*/
     * Step #2: Validate Parameters
     */
    {
        for (String domain : ctx.getDomains()) {
            String key = formatDomain(domain);
            String value = null;

            /*
                         * Handle Entries in the form <record>:<zoneid>
             */
            if (-1 != key.indexOf(':')) {
                String[] pair = key.split(":", 2);

                key = formatDomain(pair[0]);
                value = strip(pair[1], ".");
            }

            recordsToAssign.put(key, value);
        }

        Validate.isTrue(recordsToAssign.size() > 0, "No Domains Supplied!");

        if (isInfoEnabled()) {
            info("Domains to Map to Environment (cnamePrefix='%s')", ctx.getCurEnv().getCNAME());

            for (Map.Entry<String, String> entry : recordsToAssign.entrySet()) {
                String key = entry.getKey();
                String zoneId = entry.getValue();

                String message = format(" * Domain: %s", key);

                if (null != zoneId) {
                    message += " (and using zoneId " + zoneId + ")";
                }

                info(message);
            }
        }
    }

    /**
     * Step #3: Lookup Domains on Route53
     */
    Map<String, HostedZone> hostedZoneMapping = new LinkedHashMap<String, HostedZone>();

    {
        Set<String> unresolvedDomains = new LinkedHashSet<String>();

        for (Map.Entry<String, String> entry : recordsToAssign.entrySet()) {
            if (null != entry.getValue()) {
                continue;
            }

            unresolvedDomains.add(entry.getKey());
        }

        for (HostedZone hostedZone : r53.listHostedZones().getHostedZones()) {
            String id = hostedZone.getId();
            String name = hostedZone.getName();

            hostedZoneMapping.put(id, hostedZone);

            if (unresolvedDomains.contains(name)) {
                if (isInfoEnabled()) {
                    info("Mapping Domain %s to R53 Zone Id %s", name, id);
                }

                recordsToAssign.put(name, id);

                unresolvedDomains.remove(name);
            }
        }

        Validate.isTrue(unresolvedDomains.isEmpty(), "Domains not resolved: " + join(unresolvedDomains, "; "));
    }

    /**
     * Step #4: Domain Validation
     */
    {
        for (Map.Entry<String, String> entry : recordsToAssign.entrySet()) {
            String record = entry.getKey();
            String zoneId = entry.getValue();
            HostedZone hostedZone = hostedZoneMapping.get(zoneId);

            Validate.notNull(hostedZone, format("Unknown Hosted Zone Id: %s for Record: %s", zoneId, record));
            Validate.isTrue(record.endsWith(hostedZone.getName()), format(
                    "Record %s does not map to zoneId %s (domain: %s)", record, zoneId, hostedZone.getName()));
        }
    }

    /**
     * Step #5: Get ELB Hosted Zone Id - if appliable
     */
    if (!ctx.singleInstance) {
        String loadBalancerName = parentMojo.getService()
                .describeEnvironmentResources(new DescribeEnvironmentResourcesRequest()
                        .withEnvironmentId(ctx.getCurEnv().getEnvironmentId()))
                .getEnvironmentResources().getLoadBalancers().get(0).getName();

        DescribeLoadBalancersRequest req = new DescribeLoadBalancersRequest(asList(loadBalancerName));

        List<LoadBalancerDescription> loadBalancers = elb.describeLoadBalancers(req)
                .getLoadBalancerDescriptions();

        Validate.isTrue(1 == loadBalancers.size(), "Unexpected number of Load Balancers returned");

        ctx.elbHostedZoneId = loadBalancers.get(0).getCanonicalHostedZoneNameID();

        if (isInfoEnabled()) {
            info(format("Using ELB Canonical Hosted Zone Name Id %s", ctx.elbHostedZoneId));
        }
    }

    /**
     * Step #6: Apply Change Batch on Each Domain
     */
    for (Map.Entry<String, String> recordEntry : recordsToAssign.entrySet()) {
        assignDomain(ctx, recordEntry.getKey(), recordEntry.getValue());
    }

    return null;
}

From source file:com.mentation.alfonso.aws.ElasticLoadBalancer.java

License:Apache License

public void describe() {
    List<String> loadBalancers = new ArrayList<>();
    loadBalancers.add(_name);//from   w ww  .  j av a2s  .  c  o m

    DescribeLoadBalancersRequest describeLoadBalancersRequest = new DescribeLoadBalancersRequest(loadBalancers);
    DescribeLoadBalancersResult describeLoadBalancersResult = _elbClient
            .describeLoadBalancers(describeLoadBalancersRequest);

    for (LoadBalancerDescription lbd : describeLoadBalancersResult.getLoadBalancerDescriptions()) {
        System.out.println(lbd);
    }
}

From source file:com.swap.aws.elb.client.AWSHelper.java

License:Apache License

/**
 * Returns description of the load balancer which is helpful in determining
 * instances, listeners associated with load balancer
 * /*from www .j av a 2  s .c o m*/
 * @param loadBalancerName
 * @return description of the load balancer
 */
public LoadBalancerDescription getLoadBalancerDescription(String loadBalancerName) {
    List<String> loadBalancers = new ArrayList<String>();

    loadBalancers.add(loadBalancerName);

    DescribeLoadBalancersRequest describeLoadBalancersRequest = new DescribeLoadBalancersRequest(loadBalancers);

    AmazonElasticLoadBalancingClient lbClient = new AmazonElasticLoadBalancingClient(awsCredentials,
            clientConfiguration);

    lbClient.setEndpoint("elasticloadbalancing." + this.region + ".amazonaws.com");

    DescribeLoadBalancersResult result = lbClient.describeLoadBalancers(describeLoadBalancersRequest);

    if (result.getLoadBalancerDescriptions() == null || result.getLoadBalancerDescriptions().size() == 0)
        return null;
    else
        return result.getLoadBalancerDescriptions().get(0);
}

From source file:fr.xebia.demo.amazon.aws.PetclinicInfrastructureEnforcer.java

License:Apache License

/**
 * /* ww  w. j a va2  s.  c  o  m*/
 * @param healthCheckUri
 *            start with slash. E.g. "/myapp/healthcheck.jsp
 * @param applicationIdentifier
 *            used to name the load balancer and to filter the instances on
 *            their "Role" tag.
 * @return created load balancer description
 */
@Nonnull
public LoadBalancerDescription createOrUpdateElasticLoadBalancer(@Nonnull String healthCheckUri,
        @Nonnull String applicationIdentifier) {
    LOGGER.info("ENFORCE LOAD BALANCER");

    DescribeInstancesRequest describeInstancesWithRoleRequest = new DescribeInstancesRequest(). //
            withFilters(new Filter("tag:Role", Arrays.asList(applicationIdentifier)));
    DescribeInstancesResult describeInstancesResult = ec2.describeInstances(describeInstancesWithRoleRequest);

    Iterable<Instance> expectedEc2Instances = toEc2Instances(describeInstancesResult.getReservations());

    Set<String> expectedAvailabilityZones = Sets
            .newHashSet(Iterables.transform(expectedEc2Instances, EC2_INSTANCE_TO_AVAILABILITY_ZONE));
    Listener expectedListener = new Listener("HTTP", 80, 8080);

    String loadBalancerName = applicationIdentifier;

    LoadBalancerDescription actualLoadBalancerDescription;
    try {
        DescribeLoadBalancersResult describeLoadBalancers = elb
                .describeLoadBalancers(new DescribeLoadBalancersRequest(Arrays.asList(loadBalancerName)));
        if (describeLoadBalancers.getLoadBalancerDescriptions().isEmpty()) {
            // unexpected, this should have been a
            // LoadBalancerNotFoundException
            actualLoadBalancerDescription = null;
        } else {
            // re-query to get updated config

            actualLoadBalancerDescription = Iterables
                    .getFirst(describeLoadBalancers.getLoadBalancerDescriptions(), null);
        }
    } catch (LoadBalancerNotFoundException e) {
        actualLoadBalancerDescription = null;
    }

    Set<String> actualAvailabilityZones;
    Set<String> actualInstanceIds;
    Policies actualPolicies;
    HealthCheck actualHealthCheck;
    ListenerDescription actualListenerDescription = null;
    if (actualLoadBalancerDescription == null) {
        CreateLoadBalancerRequest createLoadBalancerRequest = new CreateLoadBalancerRequest() //
                .withLoadBalancerName(loadBalancerName) //
                .withAvailabilityZones(expectedAvailabilityZones) //
                .withListeners(expectedListener);
        elb.createLoadBalancer(createLoadBalancerRequest);

        actualListenerDescription = new ListenerDescription().withListener(expectedListener);
        actualAvailabilityZones = expectedAvailabilityZones;
        actualInstanceIds = Collections.emptySet();
        actualHealthCheck = new HealthCheck();
        actualPolicies = new Policies();
    } else {
        // check listeners
        List<ListenerDescription> actualListenerDescriptions = actualLoadBalancerDescription
                .getListenerDescriptions();
        boolean loadBalancerMustBeRecreated;

        if (actualListenerDescriptions.size() == 1) {
            actualListenerDescription = Iterables.getOnlyElement(actualListenerDescriptions);
            Listener actualListener = actualListenerDescription.getListener();
            if (ObjectUtils.equals(expectedListener.getProtocol(), actualListener.getProtocol()) && //
                    ObjectUtils.equals(expectedListener.getLoadBalancerPort(),
                            actualListener.getLoadBalancerPort())
                    && //
                    ObjectUtils.equals(expectedListener.getInstancePort(), actualListener.getInstancePort())) {
                loadBalancerMustBeRecreated = false;
            } else {
                loadBalancerMustBeRecreated = true;
            }
        } else {
            loadBalancerMustBeRecreated = true;
        }

        if (loadBalancerMustBeRecreated) {
            LOGGER.info("Recreate miss configured load balancer actualListeners:{}, expectedListener:{}",
                    actualListenerDescriptions, expectedListener);
            elb.deleteLoadBalancer(new DeleteLoadBalancerRequest(loadBalancerName));
            return createOrUpdateElasticLoadBalancer(healthCheckUri, applicationIdentifier);
        }

        //
        actualAvailabilityZones = Sets.newHashSet(actualLoadBalancerDescription.getAvailabilityZones());
        actualInstanceIds = Sets.newHashSet(
                Iterables.transform(actualLoadBalancerDescription.getInstances(), ELB_INSTANCE_TO_INSTANCE_ID));

        actualHealthCheck = actualLoadBalancerDescription.getHealthCheck();

        actualPolicies = actualLoadBalancerDescription.getPolicies();
    }

    // HEALTH CHECK
    if (!healthCheckUri.startsWith("/")) {
        healthCheckUri = "/" + healthCheckUri;
    }

    HealthCheck expectedHealthCheck = new HealthCheck() //
            .withTarget("HTTP:8080" + healthCheckUri) //
            .withHealthyThreshold(2) //
            .withUnhealthyThreshold(2) //
            .withInterval(30) //
            .withTimeout(2);
    if (Objects.equal(expectedHealthCheck.getTarget(), actualHealthCheck.getTarget()) && //
            Objects.equal(expectedHealthCheck.getHealthyThreshold(), actualHealthCheck.getHealthyThreshold()) && //
            Objects.equal(expectedHealthCheck.getInterval(), actualHealthCheck.getInterval()) && //
            Objects.equal(expectedHealthCheck.getTimeout(), actualHealthCheck.getTimeout()) && //
            Objects.equal(expectedHealthCheck.getUnhealthyThreshold(),
                    actualHealthCheck.getHealthyThreshold())) {
        // health check is ok
    } else {
        LOGGER.info("Set Healthcheck: {}", expectedHealthCheck);
        elb.configureHealthCheck(new ConfigureHealthCheckRequest(loadBalancerName, expectedHealthCheck));
    }

    // AVAILABILITY ZONES
    // enable
    Iterable<String> availabilityZonesToEnable = Sets.difference(expectedAvailabilityZones,
            actualAvailabilityZones);
    LOGGER.info("Enable availability zones: {}", availabilityZonesToEnable);
    if (!Iterables.isEmpty(availabilityZonesToEnable)) {
        elb.enableAvailabilityZonesForLoadBalancer(new EnableAvailabilityZonesForLoadBalancerRequest(
                loadBalancerName, Lists.newArrayList(availabilityZonesToEnable)));
    }

    // disable
    Iterable<String> availabilityZonesToDisable = Sets.difference(actualAvailabilityZones,
            expectedAvailabilityZones);
    LOGGER.info("Disable availability zones: {}", availabilityZonesToDisable);
    if (!Iterables.isEmpty(availabilityZonesToDisable)) {
        elb.disableAvailabilityZonesForLoadBalancer(new DisableAvailabilityZonesForLoadBalancerRequest(
                loadBalancerName, Lists.newArrayList(availabilityZonesToDisable)));
    }

    // STICKINESS
    List<AppCookieStickinessPolicy> appCookieStickinessPoliciesToDelete = actualPolicies
            .getAppCookieStickinessPolicies();
    LOGGER.info("Delete app cookie stickiness policies: {}", appCookieStickinessPoliciesToDelete);
    for (AppCookieStickinessPolicy appCookieStickinessPolicyToDelete : appCookieStickinessPoliciesToDelete) {
        elb.deleteLoadBalancerPolicy(new DeleteLoadBalancerPolicyRequest(loadBalancerName,
                appCookieStickinessPolicyToDelete.getPolicyName()));
    }

    final LBCookieStickinessPolicy expectedLbCookieStickinessPolicy = new LBCookieStickinessPolicy(
            applicationIdentifier + "-stickiness-policy", null);
    Predicate<LBCookieStickinessPolicy> isExpectedPolicyPredicate = new Predicate<LBCookieStickinessPolicy>() {
        @Override
        public boolean apply(LBCookieStickinessPolicy lbCookieStickinessPolicy) {
            return Objects.equal(expectedLbCookieStickinessPolicy.getPolicyName(),
                    lbCookieStickinessPolicy.getPolicyName()) && //
            Objects.equal(expectedLbCookieStickinessPolicy.getCookieExpirationPeriod(),
                    lbCookieStickinessPolicy.getCookieExpirationPeriod());
        }
    };
    Collection<LBCookieStickinessPolicy> lbCookieStickinessPoliciesToDelete = Collections2
            .filter(actualPolicies.getLBCookieStickinessPolicies(), Predicates.not(isExpectedPolicyPredicate));
    LOGGER.info("Delete lb cookie stickiness policies: {}", lbCookieStickinessPoliciesToDelete);
    for (LBCookieStickinessPolicy lbCookieStickinessPolicy : lbCookieStickinessPoliciesToDelete) {
        elb.deleteLoadBalancerPolicy(new DeleteLoadBalancerPolicyRequest(loadBalancerName,
                lbCookieStickinessPolicy.getPolicyName()));
    }

    Collection<LBCookieStickinessPolicy> matchingLbCookieStyckinessPolicy = Collections2
            .filter(actualPolicies.getLBCookieStickinessPolicies(), isExpectedPolicyPredicate);
    if (matchingLbCookieStyckinessPolicy.isEmpty()) {
        // COOKIE STICKINESS
        CreateLBCookieStickinessPolicyRequest createLbCookieStickinessPolicy = new CreateLBCookieStickinessPolicyRequest() //
                .withLoadBalancerName(loadBalancerName) //
                .withPolicyName(expectedLbCookieStickinessPolicy.getPolicyName())
                //
                .withCookieExpirationPeriod(expectedLbCookieStickinessPolicy.getCookieExpirationPeriod());
        LOGGER.info("Create LBCookieStickinessPolicy: {}", createLbCookieStickinessPolicy);
        elb.createLBCookieStickinessPolicy(createLbCookieStickinessPolicy);

    } else {
        // what ?
    }

    // TODO verify load balancer policy is associated with the listener
    List<String> expectedListenerDescriptionPolicyNames = Lists
            .newArrayList(expectedLbCookieStickinessPolicy.getPolicyName());

    boolean mustOverWriteListenerPolicy = !ObjectUtils.equals(expectedListenerDescriptionPolicyNames,
            actualListenerDescription.getPolicyNames());

    if (mustOverWriteListenerPolicy) {

        SetLoadBalancerPoliciesOfListenerRequest setLoadBalancerPoliciesOfListenerRequest = new SetLoadBalancerPoliciesOfListenerRequest() //
                .withLoadBalancerName(loadBalancerName) //
                .withLoadBalancerPort(expectedListener.getLoadBalancerPort()) //
                .withPolicyNames(expectedLbCookieStickinessPolicy.getPolicyName());
        LOGGER.debug("setLoadBalancerPoliciesOfListener: {}", setLoadBalancerPoliciesOfListenerRequest);
        elb.setLoadBalancerPoliciesOfListener(setLoadBalancerPoliciesOfListenerRequest);
    }

    // INSTANCES
    Set<String> expectedEc2InstanceIds = Sets
            .newHashSet(Iterables.transform(expectedEc2Instances, EC2_INSTANCE_TO_INSTANCE_ID));
    // register
    Iterable<String> instanceIdsToRegister = Sets.difference(expectedEc2InstanceIds, actualInstanceIds);
    LOGGER.info("Register {} instances: {}", applicationIdentifier, instanceIdsToRegister);
    if (!Iterables.isEmpty(instanceIdsToRegister)) {
        elb.registerInstancesWithLoadBalancer(new RegisterInstancesWithLoadBalancerRequest(loadBalancerName,
                Lists.newArrayList(Iterables.transform(instanceIdsToRegister, INSTANCE_ID_TO_ELB_INSTANCE))));
    }

    // deregister
    Iterable<String> instanceIdsToDeregister = Sets.difference(actualInstanceIds, expectedEc2InstanceIds);
    LOGGER.info("Deregister {} instances: {}", applicationIdentifier, instanceIdsToDeregister);
    if (!Iterables.isEmpty(instanceIdsToDeregister)) {
        elb.deregisterInstancesFromLoadBalancer(new DeregisterInstancesFromLoadBalancerRequest(loadBalancerName,
                Lists.newArrayList(Iterables.transform(instanceIdsToDeregister, INSTANCE_ID_TO_ELB_INSTANCE))));
    }

    // QUERY TO GET UP TO DATE LOAD BALANCER DESCRIPTION
    LoadBalancerDescription elasticLoadBalancerDescription = Iterables.getOnlyElement(
            elb.describeLoadBalancers(new DescribeLoadBalancersRequest(Arrays.asList(loadBalancerName)))
                    .getLoadBalancerDescriptions());

    return elasticLoadBalancerDescription;
}

From source file:fr.xebia.workshop.infrastructureascode.AmazonAwsPetclinicInfrastructureEnforcer.java

License:Apache License

/**
 * //w  ww . ja  v  a 2 s.  c om
 * @param healthCheckUri
 *            start with slash. E.g. "/myapp/healthcheck.jsp
 * @param applicationIdentifier
 *            used to name the load balancer and to filter the instances on
 *            their "Role" tag.
 * @return created load balancer description
 */
@Nonnull
public LoadBalancerDescription createOrUpdateElasticLoadBalancer(@Nonnull String healthCheckUri,
        @Nonnull String applicationIdentifier) {
    logger.info("ENFORCE LOAD BALANCER");

    DescribeInstancesRequest describeInstancesWithRoleRequest = new DescribeInstancesRequest(). //
            withFilters(new Filter("tag:Role", Arrays.asList(applicationIdentifier)));
    DescribeInstancesResult describeInstancesResult = ec2.describeInstances(describeInstancesWithRoleRequest);

    Iterable<Instance> expectedEc2Instances = toEc2Instances(describeInstancesResult.getReservations());

    Set<String> expectedAvailabilityZones = Sets
            .newHashSet(Iterables.transform(expectedEc2Instances, EC2_INSTANCE_TO_AVAILABILITY_ZONE));
    Listener expectedListener = new Listener("HTTP", 80, 8080);

    String loadBalancerName = applicationIdentifier;

    LoadBalancerDescription actualLoadBalancerDescription;
    try {
        DescribeLoadBalancersResult describeLoadBalancers = elb
                .describeLoadBalancers(new DescribeLoadBalancersRequest(Arrays.asList(loadBalancerName)));
        if (describeLoadBalancers.getLoadBalancerDescriptions().isEmpty()) {
            // unexpected, this should have been a
            // LoadBalancerNotFoundException
            actualLoadBalancerDescription = null;
        } else {
            // re-query to get updated config

            actualLoadBalancerDescription = Iterables
                    .getFirst(describeLoadBalancers.getLoadBalancerDescriptions(), null);
        }
    } catch (LoadBalancerNotFoundException e) {
        actualLoadBalancerDescription = null;
    }

    Set<String> actualAvailabilityZones;
    Set<String> actualInstanceIds;
    Policies actualPolicies;
    HealthCheck actualHealthCheck;
    ListenerDescription actualListenerDescription = null;
    if (actualLoadBalancerDescription == null) {
        CreateLoadBalancerRequest createLoadBalancerRequest = new CreateLoadBalancerRequest() //
                .withLoadBalancerName(loadBalancerName) //
                .withAvailabilityZones(expectedAvailabilityZones) //
                .withListeners(expectedListener);
        elb.createLoadBalancer(createLoadBalancerRequest);

        actualListenerDescription = new ListenerDescription().withListener(expectedListener);
        actualAvailabilityZones = expectedAvailabilityZones;
        actualInstanceIds = Collections.emptySet();
        actualHealthCheck = new HealthCheck();
        actualPolicies = new Policies();
    } else {
        // check listeners
        List<ListenerDescription> actualListenerDescriptions = actualLoadBalancerDescription
                .getListenerDescriptions();
        boolean loadBalancerMustBeRecreated;

        if (actualListenerDescriptions.size() == 1) {
            actualListenerDescription = Iterables.getOnlyElement(actualListenerDescriptions);
            Listener actualListener = actualListenerDescription.getListener();
            if (ObjectUtils.equals(expectedListener.getProtocol(), actualListener.getProtocol()) && //
                    ObjectUtils.equals(expectedListener.getLoadBalancerPort(),
                            actualListener.getLoadBalancerPort())
                    && //
                    ObjectUtils.equals(expectedListener.getInstancePort(), actualListener.getInstancePort())) {
                loadBalancerMustBeRecreated = false;
            } else {
                loadBalancerMustBeRecreated = true;
            }
        } else {
            loadBalancerMustBeRecreated = true;
        }

        if (loadBalancerMustBeRecreated) {
            logger.info("Recreate miss configured load balancer actualListeners:{}, expectedListener:{}",
                    actualListenerDescriptions, expectedListener);
            elb.deleteLoadBalancer(new DeleteLoadBalancerRequest(loadBalancerName));
            return createOrUpdateElasticLoadBalancer(healthCheckUri, applicationIdentifier);
        }

        //
        actualAvailabilityZones = Sets.newHashSet(actualLoadBalancerDescription.getAvailabilityZones());
        actualInstanceIds = Sets.newHashSet(
                Iterables.transform(actualLoadBalancerDescription.getInstances(), ELB_INSTANCE_TO_INSTANCE_ID));

        actualHealthCheck = actualLoadBalancerDescription.getHealthCheck();

        actualPolicies = actualLoadBalancerDescription.getPolicies();
    }

    // HEALTH CHECK
    if (!healthCheckUri.startsWith("/")) {
        healthCheckUri = "/" + healthCheckUri;
    }

    HealthCheck expectedHealthCheck = new HealthCheck() //
            .withTarget("HTTP:8080" + healthCheckUri) //
            .withHealthyThreshold(2) //
            .withUnhealthyThreshold(2) //
            .withInterval(30) //
            .withTimeout(2);
    if (Objects.equal(expectedHealthCheck.getTarget(), actualHealthCheck.getTarget()) && //
            Objects.equal(expectedHealthCheck.getHealthyThreshold(), actualHealthCheck.getHealthyThreshold()) && //
            Objects.equal(expectedHealthCheck.getInterval(), actualHealthCheck.getInterval()) && //
            Objects.equal(expectedHealthCheck.getTimeout(), actualHealthCheck.getTimeout()) && //
            Objects.equal(expectedHealthCheck.getUnhealthyThreshold(),
                    actualHealthCheck.getHealthyThreshold())) {
        // health check is ok
    } else {
        logger.info("Set Healthcheck: " + expectedHealthCheck);
        elb.configureHealthCheck(new ConfigureHealthCheckRequest(loadBalancerName, expectedHealthCheck));
    }

    // AVAILABILITY ZONES
    // enable
    Iterable<String> availabilityZonesToEnable = Sets.difference(expectedAvailabilityZones,
            actualAvailabilityZones);
    logger.info("Enable availability zones: " + availabilityZonesToEnable);
    if (!Iterables.isEmpty(availabilityZonesToEnable)) {
        elb.enableAvailabilityZonesForLoadBalancer(new EnableAvailabilityZonesForLoadBalancerRequest(
                loadBalancerName, Lists.newArrayList(availabilityZonesToEnable)));
    }

    // disable
    Iterable<String> availabilityZonesToDisable = Sets.difference(actualAvailabilityZones,
            expectedAvailabilityZones);
    logger.info("Disable availability zones: " + availabilityZonesToDisable);
    if (!Iterables.isEmpty(availabilityZonesToDisable)) {
        elb.disableAvailabilityZonesForLoadBalancer(new DisableAvailabilityZonesForLoadBalancerRequest(
                loadBalancerName, Lists.newArrayList(availabilityZonesToDisable)));
    }

    // STICKINESS
    List<AppCookieStickinessPolicy> appCookieStickinessPoliciesToDelete = actualPolicies
            .getAppCookieStickinessPolicies();
    logger.info("Delete app cookie stickiness policies:" + appCookieStickinessPoliciesToDelete);
    for (AppCookieStickinessPolicy appCookieStickinessPolicyToDelete : appCookieStickinessPoliciesToDelete) {
        elb.deleteLoadBalancerPolicy(new DeleteLoadBalancerPolicyRequest(loadBalancerName,
                appCookieStickinessPolicyToDelete.getPolicyName()));
    }

    final LBCookieStickinessPolicy expectedLbCookieStickinessPolicy = new LBCookieStickinessPolicy(
            applicationIdentifier + "-stickiness-policy", null);
    Predicate<LBCookieStickinessPolicy> isExpectedPolicyPredicate = new Predicate<LBCookieStickinessPolicy>() {
        @Override
        public boolean apply(LBCookieStickinessPolicy lbCookieStickinessPolicy) {
            return Objects.equal(expectedLbCookieStickinessPolicy.getPolicyName(),
                    lbCookieStickinessPolicy.getPolicyName()) && //
            Objects.equal(expectedLbCookieStickinessPolicy.getCookieExpirationPeriod(),
                    lbCookieStickinessPolicy.getCookieExpirationPeriod());
        }
    };
    Collection<LBCookieStickinessPolicy> lbCookieStickinessPoliciesToDelete = Collections2
            .filter(actualPolicies.getLBCookieStickinessPolicies(), Predicates.not(isExpectedPolicyPredicate));
    logger.info("Delete lb cookie stickiness policies: " + lbCookieStickinessPoliciesToDelete);
    for (LBCookieStickinessPolicy lbCookieStickinessPolicy : lbCookieStickinessPoliciesToDelete) {
        elb.deleteLoadBalancerPolicy(new DeleteLoadBalancerPolicyRequest(loadBalancerName,
                lbCookieStickinessPolicy.getPolicyName()));
    }

    Collection<LBCookieStickinessPolicy> matchingLbCookieStyckinessPolicy = Collections2
            .filter(actualPolicies.getLBCookieStickinessPolicies(), isExpectedPolicyPredicate);
    if (matchingLbCookieStyckinessPolicy.isEmpty()) {
        // COOKIE STICKINESS
        CreateLBCookieStickinessPolicyRequest createLbCookieStickinessPolicy = new CreateLBCookieStickinessPolicyRequest() //
                .withLoadBalancerName(loadBalancerName) //
                .withPolicyName(expectedLbCookieStickinessPolicy.getPolicyName()) //
                .withCookieExpirationPeriod(expectedLbCookieStickinessPolicy.getCookieExpirationPeriod());
        logger.info("Create LBCookieStickinessPolicy: " + createLbCookieStickinessPolicy);
        elb.createLBCookieStickinessPolicy(createLbCookieStickinessPolicy);

    } else {
        // what ?
    }

    // TODO verify load balancer policy is associated with the listener
    List<String> expectedListenerDescriptionPolicyNames = Lists
            .newArrayList(expectedLbCookieStickinessPolicy.getPolicyName());

    boolean mustOverWriteListenerPolicy = !ObjectUtils.equals(expectedListenerDescriptionPolicyNames,
            actualListenerDescription.getPolicyNames());

    if (mustOverWriteListenerPolicy) {

        SetLoadBalancerPoliciesOfListenerRequest setLoadBalancerPoliciesOfListenerRequest = new SetLoadBalancerPoliciesOfListenerRequest() //
                .withLoadBalancerName(loadBalancerName) //
                .withLoadBalancerPort(expectedListener.getLoadBalancerPort()) //
                .withPolicyNames(expectedLbCookieStickinessPolicy.getPolicyName());
        logger.debug("setLoadBalancerPoliciesOfListener: {}", setLoadBalancerPoliciesOfListenerRequest);
        elb.setLoadBalancerPoliciesOfListener(setLoadBalancerPoliciesOfListenerRequest);
    }

    // INSTANCES
    Set<String> expectedEc2InstanceIds = Sets
            .newHashSet(Iterables.transform(expectedEc2Instances, EC2_INSTANCE_TO_INSTANCE_ID));
    // register
    Iterable<String> instanceIdsToRegister = Sets.difference(expectedEc2InstanceIds, actualInstanceIds);
    logger.info("Register " + applicationIdentifier + " instances: " + instanceIdsToRegister);
    if (!Iterables.isEmpty(instanceIdsToRegister)) {
        elb.registerInstancesWithLoadBalancer(new RegisterInstancesWithLoadBalancerRequest(loadBalancerName,
                Lists.newArrayList(Iterables.transform(instanceIdsToRegister, INSTANCE_ID_TO_ELB_INSTANCE))));
    }

    // deregister
    Iterable<String> instanceIdsToDeregister = Sets.difference(actualInstanceIds, expectedEc2InstanceIds);
    logger.info("Deregister " + applicationIdentifier + " instances: " + instanceIdsToDeregister);
    if (!Iterables.isEmpty(instanceIdsToDeregister)) {
        elb.deregisterInstancesFromLoadBalancer(new DeregisterInstancesFromLoadBalancerRequest(loadBalancerName,
                Lists.newArrayList(Iterables.transform(instanceIdsToDeregister, INSTANCE_ID_TO_ELB_INSTANCE))));
    }

    // QUERY TO GET UP TO DATE LOAD BALANCER DESCRIPTION
    LoadBalancerDescription elasticLoadBalancerDescription = Iterables.getOnlyElement(
            elb.describeLoadBalancers(new DescribeLoadBalancersRequest(Arrays.asList(loadBalancerName)))
                    .getLoadBalancerDescriptions());

    return elasticLoadBalancerDescription;
}

From source file:org.apache.stratos.aws.extension.AWSHelper.java

License:Apache License

/**
 * Returns description of the load balancer which is helpful in determining
 * instances, listeners associated with load balancer
 *
 * @param loadBalancerName// w  w w.j  a  v a2 s . c  om
 * @param region           of the load balancer
 * @return description of the load balancer
 */
public LoadBalancerDescription getLoadBalancerDescription(String loadBalancerName, String region) {

    List<String> loadBalancers = new ArrayList<String>();
    loadBalancers.add(loadBalancerName);

    DescribeLoadBalancersRequest describeLoadBalancersRequest = new DescribeLoadBalancersRequest(loadBalancers);

    try {
        elbClient.setEndpoint(String.format(Constants.ELB_ENDPOINT_URL_FORMAT, region));

        DescribeLoadBalancersResult result = elbClient.describeLoadBalancers(describeLoadBalancersRequest);

        if (result.getLoadBalancerDescriptions() != null && result.getLoadBalancerDescriptions().size() > 0)
            return result.getLoadBalancerDescriptions().get(0);
    } catch (AmazonClientException e) {
        log.error("Could not find description of load balancer " + loadBalancerName, e);
    }

    return null;
}