Example usage for com.google.common.collect Iterables get

List of usage examples for com.google.common.collect Iterables get

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Introduction

In this page you can find the example usage for com.google.common.collect Iterables get.

Prototype

public static <T> T get(Iterable<T> iterable, int position)

Source Link

Document

Returns the element at the specified position in an iterable.

Usage

From source file:org.jclouds.cloudloadbalancers.loadbalancer.strategy.CloudLoadBalancersLoadBalanceNodesStrategy.java

@Override
public LoadBalancerMetadata createLoadBalancerInLocation(Location location, String name, String protocol,
        int loadBalancerPort, final int instancePort, Iterable<? extends NodeMetadata> nodes) {
    String region = checkNotNull(location, "location").getId();

    // TODO need to query and update the LB per current design.
    LoadBalancer lb = client.getLoadBalancerClient(region)
            .createLoadBalancer(LoadBalancerRequest.builder().name(name).protocol(protocol.toUpperCase())
                    .port(loadBalancerPort).virtualIPType(Type.PUBLIC)
                    .nodes(Iterables.transform(nodes, new Function<NodeMetadata, NodeRequest>() {

                        @Override
                        public NodeRequest apply(NodeMetadata arg0) {
                            return NodeRequest.builder().address(Iterables.get(arg0.getPrivateAddresses(), 0))
                                    .port(instancePort).build();

                        }/*from  w w  w.  ja  v a  2 s . c  om*/

                    })).build());
    return getLB.getLoadBalancer(region + "/" + lb.getId());
}

From source file:org.jclouds.openstack.swift.blobstore.config.SwiftBlobStoreContextModule.java

@Provides
@Singleton//from   w  w  w .j  av a  2s .c o m
protected Supplier<Location> getLocation(@Memoized Supplier<Set<? extends Location>> locations) {
    return Suppliers.<Location>ofInstance(Iterables.get(locations.get(), 0));
}

From source file:net.freifunk.autodeploy.selenium.HeadlessDriver.java

@Override
protected void get(final URL url) {
    final String userInfo = url.getUserInfo();
    if (userInfo != null) {
        final Iterable<String> parts = Splitter.on(':').split(userInfo);
        Preconditions.checkState(Iterables.size(parts) == 2, "Expecting format user:password for userinfo.");
        final String username = Iterables.get(parts, 0);
        final String password = Iterables.getLast(parts);
        _headlessDriverCredentialsProvider.set(username, password);
    } else {//from w w  w.  j a va 2  s  .  c  o  m
        _headlessDriverCredentialsProvider.reset();
    }
    super.get(url);
}

From source file:nz.co.testamation.testcommon.fixture.SomeFixture.java

public static <T> T someValue(Collection<T> values) {
    return Iterables.get(values, someIntLessThan(values.size()));
}

From source file:org.apache.pulsar.broker.loadbalance.impl.WRRPlacementStrategy.java

/**
 * <code>/*  ww w .  j a  va 2s  .co  m*/
 * Function : getByWeightedRoundRobin
 *            returns ResourceUnit selected by WRR algorithm based on available resource on RU
 * ^
 * |
 * |
 * |
 * |                |                        |                                |     |
 * |                |                        |                                |     |
 * |   Broker 2     |       Broker 3         |         Broker 1               |  B4 |
 * |                |                        |                                |     |
 * +----------------+------------------------+--------------------------------+--------->
 * 0                20                       50                               90    100
 *
 * This is weighted Round robin, we calculate weight based on availability of resources;
 * total availability is taken as a full range then each broker is given range based on
 *  its resource availability, if the number generated within total range happens to be in
 * broker's range, that broker is selected
 * </code>
 */
public ResourceUnit findBrokerForPlacement(Multimap<Long, ResourceUnit> finalCandidates) {
    if (finalCandidates.isEmpty()) {
        return null;
    }
    log.debug("Total Final Candidates selected - [{}]", finalCandidates.size());
    int totalAvailability = 0;
    for (Map.Entry<Long, ResourceUnit> candidateOwner : finalCandidates.entries()) {
        totalAvailability += candidateOwner.getKey().intValue();
    }
    ResourceUnit selectedRU = null;
    if (totalAvailability <= 0) {
        // todo: this means all the brokers are overloaded and we can't assign this namespace to any broker
        // for now, pick anyone and return that one, because when we don't have ranking we put O for each broker
        return Iterables.get(finalCandidates.get(0L), rand.nextInt(finalCandidates.size()));
    }
    int weightedSelector = rand.nextInt(totalAvailability);
    log.debug("Generated Weighted Selector Number - [{}] ", weightedSelector);
    int weightRangeSoFar = 0;
    for (Map.Entry<Long, ResourceUnit> candidateOwner : finalCandidates.entries()) {
        weightRangeSoFar += candidateOwner.getKey();
        if (weightedSelector < weightRangeSoFar) {
            selectedRU = candidateOwner.getValue();
            log.debug(" Weighted Round Robin Selected RU - [{}]", candidateOwner.getValue().getResourceId());
            break;
        }
    }
    return selectedRU;
}

From source file:org.jclouds.ec2.compute.functions.CreateSecurityGroupIfNeeded.java

private void authorizeGroupToItself(String region, String name) {
    logger.debug(">> authorizing securityGroup region(%s) name(%s) permission to itself", region, name);
    String myOwnerId = Iterables
            .get(ec2Client.getSecurityGroupServices().describeSecurityGroupsInRegion(region), 0).getOwnerId();
    ec2Client.getSecurityGroupServices().authorizeSecurityGroupIngressInRegion(region, name,
            new UserIdGroupPair(myOwnerId, name));
    logger.debug("<< authorized securityGroup(%s)", name);
}

From source file:com.google.template.soy.passes.CheckCallsVisitor.java

@Override
protected void visitCallNode(CallNode node) {

    // Recurse.//  w  w  w  . ja va  2  s  . c om
    visitChildren(node);

    // If all the data keys being passed are listed using 'param' commands, then check that all
    // required params of the callee are included.
    if (!node.dataAttribute().isPassingData()) {

        // Get the callee node (basic or delegate).
        TemplateNode callee = null;
        if (node instanceof CallBasicNode) {
            callee = templateRegistry.getBasicTemplate(((CallBasicNode) node).getCalleeName());
        } else {
            String delTemplateName = ((CallDelegateNode) node).getDelCalleeName();
            ImmutableSet<DelegateTemplateDivision> divisions = templateRegistry
                    .getDelTemplateDivisionsForAllVariants(delTemplateName);
            if (!divisions.isEmpty()) {
                callee = Iterables
                        .get(Iterables.getFirst(divisions, null).delPackageNameToDelTemplateMap.values(), 0);
            }
        }

        // Do the check if the callee node has declared params.
        if (callee != null && callee.getParams() != null) {
            // Get param keys passed by caller.
            Set<String> callerParamKeys = Sets.newHashSet();
            for (CallParamNode callerParam : node.getChildren()) {
                callerParamKeys.add(callerParam.getKey());
            }
            // Check param keys required by callee.
            List<String> missingParamKeys = Lists.newArrayListWithCapacity(2);
            for (TemplateParam calleeParam : callee.getParams()) {
                if (calleeParam.isRequired() && !callerParamKeys.contains(calleeParam.name())) {
                    missingParamKeys.add(calleeParam.name());
                }
            }
            // Report errors.
            if (!missingParamKeys.isEmpty()) {
                String errorMsgEnd = (missingParamKeys.size() == 1) ? "param '" + missingParamKeys.get(0) + "'"
                        : "params " + missingParamKeys;
                errorReporter.report(node.getSourceLocation(), MISSING_PARAM, errorMsgEnd);
            }
        }
    }
}

From source file:org.jclouds.rackspace.cloudloadbalancers.loadbalancer.strategy.CloudLoadBalancersLoadBalanceNodesStrategy.java

@Override
public LoadBalancerMetadata createLoadBalancerInLocation(Location location, String name, String protocol,
        int loadBalancerPort, final int instancePort, Iterable<? extends NodeMetadata> nodes) {
    String region = checkNotNull(location, "location").getId();

    // TODO need to query and update the LB per current design.
    LoadBalancer lb = client.getLoadBalancerApiForZone(region)
            .create(LoadBalancerRequest.builder().name(name).protocol(protocol.toUpperCase())
                    .port(loadBalancerPort).virtualIPType(Type.PUBLIC)
                    .nodes(Iterables.transform(nodes, new Function<NodeMetadata, NodeRequest>() {

                        @Override
                        public NodeRequest apply(NodeMetadata arg0) {
                            return NodeRequest.builder().address(Iterables.get(arg0.getPrivateAddresses(), 0))
                                    .port(instancePort).build();

                        }//from  w  w  w. ja  va 2 s .c o m

                    })).build());
    return getLB.getLoadBalancer(region + "/" + lb.getId());
}

From source file:org.jclouds.rackspace.cloudloadbalancers.v1.loadbalancer.strategy.CloudLoadBalancersLoadBalanceNodesStrategy.java

@Override
public LoadBalancerMetadata createLoadBalancerInLocation(Location location, String name, String protocol,
        int loadBalancerPort, final int instancePort, Iterable<? extends NodeMetadata> nodes) {
    String region = checkNotNull(location, "location").getId();

    // TODO need to query and update the LB per current design.
    LoadBalancer lb = client.getLoadBalancerApiForZone(region)
            .create(CreateLoadBalancer.builder().name(name).protocol(protocol.toUpperCase())
                    .port(loadBalancerPort).virtualIPType(Type.PUBLIC)
                    .nodes(Iterables.transform(nodes, new Function<NodeMetadata, AddNode>() {

                        @Override
                        public AddNode apply(NodeMetadata arg0) {
                            return AddNode.builder().address(Iterables.get(arg0.getPrivateAddresses(), 0))
                                    .port(instancePort).build();

                        }//from w w w .  j  a  v  a2  s.c  o m

                    })).build());
    return getLB.getLoadBalancer(region + "/" + lb.getId());
}

From source file:net.holmes.core.business.streaming.airplay.controlpoint.CommandResponse.java

/**
 * Decode content parameters./*from w  w  w .j  a  v a2 s . co  m*/
 *
 * @param content content
 */
public void decodeContentParameters(String content) {
    for (String line : Splitter.on(EOL).split(content)) {
        Iterable<String> it = Splitter.on(PARAMETER_SEPARATOR).trimResults().split(line);
        if (Iterables.size(it) > 1) {
            contentParameters.put(Iterables.get(it, 0), Iterables.getLast(it));
        }
    }
}