Class LookupServiceClient (2.32.0)

Service Description: Service Directory API for looking up service data at runtime.

This class provides the ability to make remote calls to the backing service through method calls that map to API methods. Sample code to get started:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (LookupServiceClient lookupServiceClient = LookupServiceClient.create()) {
   ResolveServiceRequest request =
       ResolveServiceRequest.newBuilder()
           .setName(
               ServiceName.of("[PROJECT]", "[LOCATION]", "[NAMESPACE]", "[SERVICE]").toString())
           .setMaxEndpoints(2074789987)
           .setEndpointFilter("endpointFilter-1834249875")
           .build();
   ResolveServiceResponse response = lookupServiceClient.resolveService(request);
 }

Note: close() needs to be called on the LookupServiceClient object to clean up resources such as threads. In the example above, try-with-resources is used, which automatically calls close().

The surface of this class includes several types of Java methods for each of the API's methods:

A "flattened" method. With this type of method, the fields of the request type have been converted into function parameters. It may be the case that not all fields are available as parameters, and not every API method will have a flattened method entry point.
A "request object" method. This type of method only takes one parameter, a request object, which must be constructed before the call. Not every API method will have a request object method.
A "callable" method. This type of method takes no parameters and returns an immutable API callable object, which can be used to initiate calls to the service.

See the individual methods for example code.

Many parameters require resource names to be formatted in a particular way. To assist with these names, this class includes a format method for each type of name, and additionally a parse method to extract the individual identifiers contained within names that are returned.

This class can be customized by passing in a custom instance of LookupServiceSettings to create(). For example:

To customize credentials:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 LookupServiceSettings lookupServiceSettings =
     LookupServiceSettings.newBuilder()
         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
         .build();
 LookupServiceClient lookupServiceClient = LookupServiceClient.create(lookupServiceSettings);

To customize the endpoint:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 LookupServiceSettings lookupServiceSettings =
     LookupServiceSettings.newBuilder().setEndpoint(myEndpoint).build();
 LookupServiceClient lookupServiceClient = LookupServiceClient.create(lookupServiceSettings);

To use REST (HTTP1.1/JSON) transport (instead of gRPC) for sending and receiving requests over the wire:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 LookupServiceSettings lookupServiceSettings =
     LookupServiceSettings.newHttpJsonBuilder().build();
 LookupServiceClient lookupServiceClient = LookupServiceClient.create(lookupServiceSettings);

Please refer to the GitHub repository's samples for more quickstart code snippets.

Inheritance

java.lang.Object > LookupServiceClient

Static Methods

create()

public static final LookupServiceClient create()

Constructs an instance of LookupServiceClient with default settings.

Returns
Type	Description
`LookupServiceClient`

Exceptions
Type	Description
`IOException`

create(LookupServiceSettings settings)

public static final LookupServiceClient create(LookupServiceSettings settings)

Constructs an instance of LookupServiceClient, using the given settings. The channels are created based on the settings passed in, or defaults for any settings that are not set.

Parameter
Name	Description
`settings`	`LookupServiceSettings`

Returns
Type	Description
`LookupServiceClient`

Exceptions
Type	Description
`IOException`

create(LookupServiceStub stub)

public static final LookupServiceClient create(LookupServiceStub stub)

Constructs an instance of LookupServiceClient, using the given stub for making calls. This is for advanced usage - prefer using create(LookupServiceSettings).

Parameter
Name	Description
`stub`	`LookupServiceStub`

Returns
Type	Description
`LookupServiceClient`

Constructors

LookupServiceClient(LookupServiceSettings settings)

protected LookupServiceClient(LookupServiceSettings settings)

Constructs an instance of LookupServiceClient, using the given settings. This is protected so that it is easy to make a subclass, but otherwise, the static factory methods should be preferred.

Parameter
Name	Description
`settings`	`LookupServiceSettings`

LookupServiceClient(LookupServiceStub stub)

protected LookupServiceClient(LookupServiceStub stub)

Parameter
Name	Description
`stub`	`LookupServiceStub`

Methods

awaitTermination(long duration, TimeUnit unit)

public boolean awaitTermination(long duration, TimeUnit unit)

Parameters
Name	Description
`duration`	`long`
`unit`	`TimeUnit`

Returns
Type	Description
`boolean`

Exceptions
Type	Description
`InterruptedException`

close()

public final void close()

getLocation(GetLocationRequest request)

public final Location getLocation(GetLocationRequest request)

Gets information about a location.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (LookupServiceClient lookupServiceClient = LookupServiceClient.create()) {
   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
   Location response = lookupServiceClient.getLocation(request);
 }

Parameter
Name	Description
`request`	`com.google.cloud.location.GetLocationRequest` The request object containing all of the parameters for the API call.

Returns
Type	Description
`com.google.cloud.location.Location`

getLocationCallable()

public final UnaryCallable<GetLocationRequest,Location> getLocationCallable()

Gets information about a location.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (LookupServiceClient lookupServiceClient = LookupServiceClient.create()) {
   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
   ApiFuture<Location> future = lookupServiceClient.getLocationCallable().futureCall(request);
   // Do something.
   Location response = future.get();
 }

Returns
Type	Description
`UnaryCallable<com.google.cloud.location.GetLocationRequest,com.google.cloud.location.Location>`

getSettings()

public final LookupServiceSettings getSettings()

Returns
Type	Description
`LookupServiceSettings`

getStub()

public LookupServiceStub getStub()

Returns
Type	Description
`LookupServiceStub`

isShutdown()

public boolean isShutdown()

Returns
Type	Description
`boolean`

isTerminated()

public boolean isTerminated()

Returns
Type	Description
`boolean`

listLocations(ListLocationsRequest request)

public final LookupServiceClient.ListLocationsPagedResponse listLocations(ListLocationsRequest request)

Lists information about the supported locations for this service.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (LookupServiceClient lookupServiceClient = LookupServiceClient.create()) {
   ListLocationsRequest request =
       ListLocationsRequest.newBuilder()
           .setName("name3373707")
           .setFilter("filter-1274492040")
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .build();
   for (Location element : lookupServiceClient.listLocations(request).iterateAll()) {
     // doThingsWith(element);
   }
 }

Parameter
Name	Description
`request`	`com.google.cloud.location.ListLocationsRequest` The request object containing all of the parameters for the API call.

Returns
Type	Description
`LookupServiceClient.ListLocationsPagedResponse`

listLocationsCallable()

public final UnaryCallable<ListLocationsRequest,ListLocationsResponse> listLocationsCallable()

Lists information about the supported locations for this service.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (LookupServiceClient lookupServiceClient = LookupServiceClient.create()) {
   ListLocationsRequest request =
       ListLocationsRequest.newBuilder()
           .setName("name3373707")
           .setFilter("filter-1274492040")
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .build();
   while (true) {
     ListLocationsResponse response = lookupServiceClient.listLocationsCallable().call(request);
     for (Location element : response.getLocationsList()) {
       // doThingsWith(element);
     }
     String nextPageToken = response.getNextPageToken();
     if (!Strings.isNullOrEmpty(nextPageToken)) {
       request = request.toBuilder().setPageToken(nextPageToken).build();
     } else {
       break;
     }
   }
 }

Returns
Type	Description
`UnaryCallable<com.google.cloud.location.ListLocationsRequest,com.google.cloud.location.ListLocationsResponse>`

listLocationsPagedCallable()

public final UnaryCallable<ListLocationsRequest,LookupServiceClient.ListLocationsPagedResponse> listLocationsPagedCallable()

Lists information about the supported locations for this service.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (LookupServiceClient lookupServiceClient = LookupServiceClient.create()) {
   ListLocationsRequest request =
       ListLocationsRequest.newBuilder()
           .setName("name3373707")
           .setFilter("filter-1274492040")
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .build();
   ApiFuture<Location> future =
       lookupServiceClient.listLocationsPagedCallable().futureCall(request);
   // Do something.
   for (Location element : future.get().iterateAll()) {
     // doThingsWith(element);
   }
 }

Returns
Type	Description
`UnaryCallable<com.google.cloud.location.ListLocationsRequest,ListLocationsPagedResponse>`

resolveService(ResolveServiceRequest request)

public final ResolveServiceResponse resolveService(ResolveServiceRequest request)

Returns a service and its associated endpoints. Resolving a service is not considered an active developer method.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (LookupServiceClient lookupServiceClient = LookupServiceClient.create()) {
   ResolveServiceRequest request =
       ResolveServiceRequest.newBuilder()
           .setName(
               ServiceName.of("[PROJECT]", "[LOCATION]", "[NAMESPACE]", "[SERVICE]").toString())
           .setMaxEndpoints(2074789987)
           .setEndpointFilter("endpointFilter-1834249875")
           .build();
   ResolveServiceResponse response = lookupServiceClient.resolveService(request);
 }

Parameter
Name	Description
`request`	`ResolveServiceRequest` The request object containing all of the parameters for the API call.

Returns
Type	Description
`ResolveServiceResponse`

resolveServiceCallable()

public final UnaryCallable<ResolveServiceRequest,ResolveServiceResponse> resolveServiceCallable()

Returns a service and its associated endpoints. Resolving a service is not considered an active developer method.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (LookupServiceClient lookupServiceClient = LookupServiceClient.create()) {
   ResolveServiceRequest request =
       ResolveServiceRequest.newBuilder()
           .setName(
               ServiceName.of("[PROJECT]", "[LOCATION]", "[NAMESPACE]", "[SERVICE]").toString())
           .setMaxEndpoints(2074789987)
           .setEndpointFilter("endpointFilter-1834249875")
           .build();
   ApiFuture<ResolveServiceResponse> future =
       lookupServiceClient.resolveServiceCallable().futureCall(request);
   // Do something.
   ResolveServiceResponse response = future.get();
 }

Returns
Type	Description
`UnaryCallable<ResolveServiceRequest,ResolveServiceResponse>`

shutdown()

public void shutdown()

shutdownNow()

public void shutdownNow()