Class LookupServiceClient (2.54.0)

GitHub RepositoryProduct ReferenceREST DocumentationRPC Documentation

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().

Methods
Method Description Method Variants

ResolveService

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

Request object method variants only take one parameter, a request object, which must be constructed before the call.

  • resolveService(ResolveServiceRequest request)

Callable method variants take no parameters and return an immutable API callable object, which can be used to initiate calls to the service.

  • resolveServiceCallable()

ListLocations

Lists information about the supported locations for this service.

Request object method variants only take one parameter, a request object, which must be constructed before the call.

  • listLocations(ListLocationsRequest request)

Callable method variants take no parameters and return an immutable API callable object, which can be used to initiate calls to the service.

  • listLocationsPagedCallable()

  • listLocationsCallable()

GetLocation

Gets information about a location.

Request object method variants only take one parameter, a request object, which must be constructed before the call.

  • getLocation(GetLocationRequest request)

Callable method variants take no parameters and return an immutable API callable object, which can be used to initiate calls to the service.

  • getLocationCallable()

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()