LoggingClient.java

/*
 * Copyright 2021 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.cloud.logging.v2;

import com.google.api.MonitoredResource;
import com.google.api.MonitoredResourceDescriptor;
import com.google.api.core.ApiFuture;
import com.google.api.core.ApiFutures;
import com.google.api.core.BetaApi;
import com.google.api.gax.core.BackgroundResource;
import com.google.api.gax.paging.AbstractFixedSizeCollection;
import com.google.api.gax.paging.AbstractPage;
import com.google.api.gax.paging.AbstractPagedListResponse;
import com.google.api.gax.rpc.BidiStreamingCallable;
import com.google.api.gax.rpc.PageContext;
import com.google.api.gax.rpc.UnaryCallable;
import com.google.cloud.logging.v2.stub.LoggingServiceV2Stub;
import com.google.cloud.logging.v2.stub.LoggingServiceV2StubSettings;
import com.google.common.util.concurrent.MoreExecutors;
import com.google.logging.v2.BillingAccountName;
import com.google.logging.v2.DeleteLogRequest;
import com.google.logging.v2.FolderName;
import com.google.logging.v2.ListLogEntriesRequest;
import com.google.logging.v2.ListLogEntriesResponse;
import com.google.logging.v2.ListLogsRequest;
import com.google.logging.v2.ListLogsResponse;
import com.google.logging.v2.ListMonitoredResourceDescriptorsRequest;
import com.google.logging.v2.ListMonitoredResourceDescriptorsResponse;
import com.google.logging.v2.LogEntry;
import com.google.logging.v2.LogName;
import com.google.logging.v2.OrganizationName;
import com.google.logging.v2.ProjectName;
import com.google.logging.v2.TailLogEntriesRequest;
import com.google.logging.v2.TailLogEntriesResponse;
import com.google.logging.v2.WriteLogEntriesRequest;
import com.google.logging.v2.WriteLogEntriesResponse;
import com.google.protobuf.Empty;
import java.io.IOException;
import java.util.List;
import java.util.Map;
import java.util.concurrent.TimeUnit;
import javax.annotation.Generated;

// AUTO-GENERATED DOCUMENTATION AND CLASS.
/**
 * Service Description: Service for ingesting and querying logs.
 *
 * <p>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:
 *
 * <pre>{@code
 * try (LoggingClient loggingClient = LoggingClient.create()) {
 *   LogName logName = LogName.ofProjectLogName("[PROJECT]", "[LOG]");
 *   loggingClient.deleteLog(logName);
 * }
 * }</pre>
 *
 * <p>Note: close() needs to be called on the LoggingClient object to clean up resources such as
 * threads. In the example above, try-with-resources is used, which automatically calls close().
 *
 * <p>The surface of this class includes several types of Java methods for each of the API's
 * methods:
 *
 * <ol>
 *   <li>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.
 *   <li>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.
 *   <li>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.
 * </ol>
 *
 * <p>See the individual methods for example code.
 *
 * <p>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.
 *
 * <p>This class can be customized by passing in a custom instance of LoggingSettings to create().
 * For example:
 *
 * <p>To customize credentials:
 *
 * <pre>{@code
 * LoggingSettings loggingSettings =
 *     LoggingSettings.newBuilder()
 *         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
 *         .build();
 * LoggingClient loggingClient = LoggingClient.create(loggingSettings);
 * }</pre>
 *
 * <p>To customize the endpoint:
 *
 * <pre>{@code
 * LoggingSettings loggingSettings = LoggingSettings.newBuilder().setEndpoint(myEndpoint).build();
 * LoggingClient loggingClient = LoggingClient.create(loggingSettings);
 * }</pre>
 *
 * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
 */
@Generated("by gapic-generator-java")
public class LoggingClient implements BackgroundResource {
  private final LoggingSettings settings;
  private final LoggingServiceV2Stub stub;

  /** Constructs an instance of LoggingClient with default settings. */
  public static final LoggingClient create() throws IOException {
    return create(LoggingSettings.newBuilder().build());
  }

  /**
   * Constructs an instance of LoggingClient, using the given settings. The channels are created
   * based on the settings passed in, or defaults for any settings that are not set.
   */
  public static final LoggingClient create(LoggingSettings settings) throws IOException {
    return new LoggingClient(settings);
  }

  /**
   * Constructs an instance of LoggingClient, using the given stub for making calls. This is for
   * advanced usage - prefer using create(LoggingSettings).
   */
  @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
  public static final LoggingClient create(LoggingServiceV2Stub stub) {
    return new LoggingClient(stub);
  }

  /**
   * Constructs an instance of LoggingClient, 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.
   */
  protected LoggingClient(LoggingSettings settings) throws IOException {
    this.settings = settings;
    this.stub = ((LoggingServiceV2StubSettings) settings.getStubSettings()).createStub();
  }

  @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
  protected LoggingClient(LoggingServiceV2Stub stub) {
    this.settings = null;
    this.stub = stub;
  }

  public final LoggingSettings getSettings() {
    return settings;
  }

  @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
  public LoggingServiceV2Stub getStub() {
    return stub;
  }

  // AUTO-GENERATED DOCUMENTATION AND METHOD.
  /**
   * Deletes all the log entries in a log. The log reappears if it receives new entries. Log entries
   * written shortly before the delete operation might not be deleted. Entries received after the
   * delete operation with a timestamp before the operation will be deleted.
   *
   * <p>Sample code:
   *
   * <pre>{@code
   * try (LoggingClient loggingClient = LoggingClient.create()) {
   *   LogName logName = LogName.ofProjectLogName("[PROJECT]", "[LOG]");
   *   loggingClient.deleteLog(logName);
   * }
   * }</pre>
   *
   * @param logName Required. The resource name of the log to delete:
   *     <p>"projects/[PROJECT_ID]/logs/[LOG_ID]" "organizations/[ORGANIZATION_ID]/logs/[LOG_ID]"
   *     "billingAccounts/[BILLING_ACCOUNT_ID]/logs/[LOG_ID]" "folders/[FOLDER_ID]/logs/[LOG_ID]"
   *     <p>`[LOG_ID]` must be URL-encoded. For example, `"projects/my-project-id/logs/syslog"`,
   *     `"organizations/1234567890/logs/cloudresourcemanager.googleapis.com%2Factivity"`. For more
   *     information about log names, see [LogEntry][google.logging.v2.LogEntry].
   * @throws com.google.api.gax.rpc.ApiException if the remote call fails
   */
  public final void deleteLog(LogName logName) {
    DeleteLogRequest request =
        DeleteLogRequest.newBuilder()
            .setLogName(logName == null ? null : logName.toString())
            .build();
    deleteLog(request);
  }

  // AUTO-GENERATED DOCUMENTATION AND METHOD.
  /**
   * Deletes all the log entries in a log. The log reappears if it receives new entries. Log entries
   * written shortly before the delete operation might not be deleted. Entries received after the
   * delete operation with a timestamp before the operation will be deleted.
   *
   * <p>Sample code:
   *
   * <pre>{@code
   * try (LoggingClient loggingClient = LoggingClient.create()) {
   *   String logName = LogName.ofProjectLogName("[PROJECT]", "[LOG]").toString();
   *   loggingClient.deleteLog(logName);
   * }
   * }</pre>
   *
   * @param logName Required. The resource name of the log to delete:
   *     <p>"projects/[PROJECT_ID]/logs/[LOG_ID]" "organizations/[ORGANIZATION_ID]/logs/[LOG_ID]"
   *     "billingAccounts/[BILLING_ACCOUNT_ID]/logs/[LOG_ID]" "folders/[FOLDER_ID]/logs/[LOG_ID]"
   *     <p>`[LOG_ID]` must be URL-encoded. For example, `"projects/my-project-id/logs/syslog"`,
   *     `"organizations/1234567890/logs/cloudresourcemanager.googleapis.com%2Factivity"`. For more
   *     information about log names, see [LogEntry][google.logging.v2.LogEntry].
   * @throws com.google.api.gax.rpc.ApiException if the remote call fails
   */
  public final void deleteLog(String logName) {
    DeleteLogRequest request = DeleteLogRequest.newBuilder().setLogName(logName).build();
    deleteLog(request);
  }

  // AUTO-GENERATED DOCUMENTATION AND METHOD.
  /**
   * Deletes all the log entries in a log. The log reappears if it receives new entries. Log entries
   * written shortly before the delete operation might not be deleted. Entries received after the
   * delete operation with a timestamp before the operation will be deleted.
   *
   * <p>Sample code:
   *
   * <pre>{@code
   * try (LoggingClient loggingClient = LoggingClient.create()) {
   *   DeleteLogRequest request =
   *       DeleteLogRequest.newBuilder()
   *           .setLogName(LogName.ofProjectLogName("[PROJECT]", "[LOG]").toString())
   *           .build();
   *   loggingClient.deleteLog(request);
   * }
   * }</pre>
   *
   * @param request The request object containing all of the parameters for the API call.
   * @throws com.google.api.gax.rpc.ApiException if the remote call fails
   */
  public final void deleteLog(DeleteLogRequest request) {
    deleteLogCallable().call(request);
  }

  // AUTO-GENERATED DOCUMENTATION AND METHOD.
  /**
   * Deletes all the log entries in a log. The log reappears if it receives new entries. Log entries
   * written shortly before the delete operation might not be deleted. Entries received after the
   * delete operation with a timestamp before the operation will be deleted.
   *
   * <p>Sample code:
   *
   * <pre>{@code
   * try (LoggingClient loggingClient = LoggingClient.create()) {
   *   DeleteLogRequest request =
   *       DeleteLogRequest.newBuilder()
   *           .setLogName(LogName.ofProjectLogName("[PROJECT]", "[LOG]").toString())
   *           .build();
   *   ApiFuture<Empty> future = loggingClient.deleteLogCallable().futureCall(request);
   *   // Do something.
   *   future.get();
   * }
   * }</pre>
   */
  public final UnaryCallable<DeleteLogRequest, Empty> deleteLogCallable() {
    return stub.deleteLogCallable();
  }

  // AUTO-GENERATED DOCUMENTATION AND METHOD.
  /**
   * Writes log entries to Logging. This API method is the only way to send log entries to Logging.
   * This method is used, directly or indirectly, by the Logging agent (fluentd) and all logging
   * libraries configured to use Logging. A single request may contain log entries for a maximum of
   * 1000 different resources (projects, organizations, billing accounts or folders)
   *
   * <p>Sample code:
   *
   * <pre>{@code
   * try (LoggingClient loggingClient = LoggingClient.create()) {
   *   LogName logName = LogName.ofProjectLogName("[PROJECT]", "[LOG]");
   *   MonitoredResource resource = MonitoredResource.newBuilder().build();
   *   Map<String, String> labels = new HashMap<>();
   *   List<LogEntry> entries = new ArrayList<>();
   *   WriteLogEntriesResponse response =
   *       loggingClient.writeLogEntries(logName, resource, labels, entries);
   * }
   * }</pre>
   *
   * @param logName Optional. A default log resource name that is assigned to all log entries in
   *     `entries` that do not specify a value for `log_name`:
   *     <p>"projects/[PROJECT_ID]/logs/[LOG_ID]" "organizations/[ORGANIZATION_ID]/logs/[LOG_ID]"
   *     "billingAccounts/[BILLING_ACCOUNT_ID]/logs/[LOG_ID]" "folders/[FOLDER_ID]/logs/[LOG_ID]"
   *     <p>`[LOG_ID]` must be URL-encoded. For example:
   *     <p>"projects/my-project-id/logs/syslog"
   *     "organizations/1234567890/logs/cloudresourcemanager.googleapis.com%2Factivity"
   *     <p>The permission `logging.logEntries.create` is needed on each project, organization,
   *     billing account, or folder that is receiving new log entries, whether the resource is
   *     specified in `logName` or in an individual log entry.
   * @param resource Optional. A default monitored resource object that is assigned to all log
   *     entries in `entries` that do not specify a value for `resource`. Example:
   *     <p>{ "type": "gce_instance", "labels": { "zone": "us-central1-a", "instance_id":
   *     "00000000000000000000" }}
   *     <p>See [LogEntry][google.logging.v2.LogEntry].
   * @param labels Optional. Default labels that are added to the `labels` field of all log entries
   *     in `entries`. If a log entry already has a label with the same key as a label in this
   *     parameter, then the log entry's label is not changed. See
   *     [LogEntry][google.logging.v2.LogEntry].
   * @param entries Required. The log entries to send to Logging. The order of log entries in this
   *     list does not matter. Values supplied in this method's `log_name`, `resource`, and `labels`
   *     fields are copied into those log entries in this list that do not include values for their
   *     corresponding fields. For more information, see the [LogEntry][google.logging.v2.LogEntry]
   *     type.
   *     <p>If the `timestamp` or `insert_id` fields are missing in log entries, then this method
   *     supplies the current time or a unique identifier, respectively. The supplied values are
   *     chosen so that, among the log entries that did not supply their own values, the entries
   *     earlier in the list will sort before the entries later in the list. See the `entries.list`
   *     method.
   *     <p>Log entries with timestamps that are more than the [logs retention
   *     period](https://cloud.google.com/logging/quota-policy) in the past or more than 24 hours in
   *     the future will not be available when calling `entries.list`. However, those log entries
   *     can still be [exported with
   *     LogSinks](https://cloud.google.com/logging/docs/api/tasks/exporting-logs).
   *     <p>To improve throughput and to avoid exceeding the [quota
   *     limit](https://cloud.google.com/logging/quota-policy) for calls to `entries.write`, you
   *     should try to include several log entries in this list, rather than calling this method for
   *     each individual log entry.
   * @throws com.google.api.gax.rpc.ApiException if the remote call fails
   */
  public final WriteLogEntriesResponse writeLogEntries(
      LogName logName,
      MonitoredResource resource,
      Map<String, String> labels,
      List<LogEntry> entries) {
    WriteLogEntriesRequest request =
        WriteLogEntriesRequest.newBuilder()
            .setLogName(logName == null ? null : logName.toString())
            .setResource(resource)
            .putAllLabels(labels)
            .addAllEntries(entries)
            .build();
    return writeLogEntries(request);
  }

  // AUTO-GENERATED DOCUMENTATION AND METHOD.
  /**
   * Writes log entries to Logging. This API method is the only way to send log entries to Logging.
   * This method is used, directly or indirectly, by the Logging agent (fluentd) and all logging
   * libraries configured to use Logging. A single request may contain log entries for a maximum of
   * 1000 different resources (projects, organizations, billing accounts or folders)
   *
   * <p>Sample code:
   *
   * <pre>{@code
   * try (LoggingClient loggingClient = LoggingClient.create()) {
   *   String logName = LogName.ofProjectLogName("[PROJECT]", "[LOG]").toString();
   *   MonitoredResource resource = MonitoredResource.newBuilder().build();
   *   Map<String, String> labels = new HashMap<>();
   *   List<LogEntry> entries = new ArrayList<>();
   *   WriteLogEntriesResponse response =
   *       loggingClient.writeLogEntries(logName, resource, labels, entries);
   * }
   * }</pre>
   *
   * @param logName Optional. A default log resource name that is assigned to all log entries in
   *     `entries` that do not specify a value for `log_name`:
   *     <p>"projects/[PROJECT_ID]/logs/[LOG_ID]" "organizations/[ORGANIZATION_ID]/logs/[LOG_ID]"
   *     "billingAccounts/[BILLING_ACCOUNT_ID]/logs/[LOG_ID]" "folders/[FOLDER_ID]/logs/[LOG_ID]"
   *     <p>`[LOG_ID]` must be URL-encoded. For example:
   *     <p>"projects/my-project-id/logs/syslog"
   *     "organizations/1234567890/logs/cloudresourcemanager.googleapis.com%2Factivity"
   *     <p>The permission `logging.logEntries.create` is needed on each project, organization,
   *     billing account, or folder that is receiving new log entries, whether the resource is
   *     specified in `logName` or in an individual log entry.
   * @param resource Optional. A default monitored resource object that is assigned to all log
   *     entries in `entries` that do not specify a value for `resource`. Example:
   *     <p>{ "type": "gce_instance", "labels": { "zone": "us-central1-a", "instance_id":
   *     "00000000000000000000" }}
   *     <p>See [LogEntry][google.logging.v2.LogEntry].
   * @param labels Optional. Default labels that are added to the `labels` field of all log entries
   *     in `entries`. If a log entry already has a label with the same key as a label in this
   *     parameter, then the log entry's label is not changed. See
   *     [LogEntry][google.logging.v2.LogEntry].
   * @param entries Required. The log entries to send to Logging. The order of log entries in this
   *     list does not matter. Values supplied in this method's `log_name`, `resource`, and `labels`
   *     fields are copied into those log entries in this list that do not include values for their
   *     corresponding fields. For more information, see the [LogEntry][google.logging.v2.LogEntry]
   *     type.
   *     <p>If the `timestamp` or `insert_id` fields are missing in log entries, then this method
   *     supplies the current time or a unique identifier, respectively. The supplied values are
   *     chosen so that, among the log entries that did not supply their own values, the entries
   *     earlier in the list will sort before the entries later in the list. See the `entries.list`
   *     method.
   *     <p>Log entries with timestamps that are more than the [logs retention
   *     period](https://cloud.google.com/logging/quota-policy) in the past or more than 24 hours in
   *     the future will not be available when calling `entries.list`. However, those log entries
   *     can still be [exported with
   *     LogSinks](https://cloud.google.com/logging/docs/api/tasks/exporting-logs).
   *     <p>To improve throughput and to avoid exceeding the [quota
   *     limit](https://cloud.google.com/logging/quota-policy) for calls to `entries.write`, you
   *     should try to include several log entries in this list, rather than calling this method for
   *     each individual log entry.
   * @throws com.google.api.gax.rpc.ApiException if the remote call fails
   */
  public final WriteLogEntriesResponse writeLogEntries(
      String logName,
      MonitoredResource resource,
      Map<String, String> labels,
      List<LogEntry> entries) {
    WriteLogEntriesRequest request =
        WriteLogEntriesRequest.newBuilder()
            .setLogName(logName)
            .setResource(resource)
            .putAllLabels(labels)
            .addAllEntries(entries)
            .build();
    return writeLogEntries(request);
  }

  // AUTO-GENERATED DOCUMENTATION AND METHOD.
  /**
   * Writes log entries to Logging. This API method is the only way to send log entries to Logging.
   * This method is used, directly or indirectly, by the Logging agent (fluentd) and all logging
   * libraries configured to use Logging. A single request may contain log entries for a maximum of
   * 1000 different resources (projects, organizations, billing accounts or folders)
   *
   * <p>Sample code:
   *
   * <pre>{@code
   * try (LoggingClient loggingClient = LoggingClient.create()) {
   *   WriteLogEntriesRequest request =
   *       WriteLogEntriesRequest.newBuilder()
   *           .setLogName(LogName.ofProjectLogName("[PROJECT]", "[LOG]").toString())
   *           .setResource(MonitoredResource.newBuilder().build())
   *           .putAllLabels(new HashMap<String, String>())
   *           .addAllEntries(new ArrayList<LogEntry>())
   *           .setPartialSuccess(true)
   *           .setDryRun(true)
   *           .build();
   *   WriteLogEntriesResponse response = loggingClient.writeLogEntries(request);
   * }
   * }</pre>
   *
   * @param request The request object containing all of the parameters for the API call.
   * @throws com.google.api.gax.rpc.ApiException if the remote call fails
   */
  public final WriteLogEntriesResponse writeLogEntries(WriteLogEntriesRequest request) {
    return writeLogEntriesCallable().call(request);
  }

  // AUTO-GENERATED DOCUMENTATION AND METHOD.
  /**
   * Writes log entries to Logging. This API method is the only way to send log entries to Logging.
   * This method is used, directly or indirectly, by the Logging agent (fluentd) and all logging
   * libraries configured to use Logging. A single request may contain log entries for a maximum of
   * 1000 different resources (projects, organizations, billing accounts or folders)
   *
   * <p>Sample code:
   *
   * <pre>{@code
   * try (LoggingClient loggingClient = LoggingClient.create()) {
   *   WriteLogEntriesRequest request =
   *       WriteLogEntriesRequest.newBuilder()
   *           .setLogName(LogName.ofProjectLogName("[PROJECT]", "[LOG]").toString())
   *           .setResource(MonitoredResource.newBuilder().build())
   *           .putAllLabels(new HashMap<String, String>())
   *           .addAllEntries(new ArrayList<LogEntry>())
   *           .setPartialSuccess(true)
   *           .setDryRun(true)
   *           .build();
   *   ApiFuture<WriteLogEntriesResponse> future =
   *       loggingClient.writeLogEntriesCallable().futureCall(request);
   *   // Do something.
   *   WriteLogEntriesResponse response = future.get();
   * }
   * }</pre>
   */
  public final UnaryCallable<WriteLogEntriesRequest, WriteLogEntriesResponse>
      writeLogEntriesCallable() {
    return stub.writeLogEntriesCallable();
  }

  // AUTO-GENERATED DOCUMENTATION AND METHOD.
  /**
   * Lists log entries. Use this method to retrieve log entries that originated from a
   * project/folder/organization/billing account. For ways to export log entries, see [Exporting
   * Logs](https://cloud.google.com/logging/docs/export).
   *
   * <p>Sample code:
   *
   * <pre>{@code
   * try (LoggingClient loggingClient = LoggingClient.create()) {
   *   List<String> resourceNames = new ArrayList<>();
   *   String filter = "filter-1274492040";
   *   String orderBy = "orderBy-1207110587";
   *   for (LogEntry element :
   *       loggingClient.listLogEntries(resourceNames, filter, orderBy).iterateAll()) {
   *     // doThingsWith(element);
   *   }
   * }
   * }</pre>
   *
   * @param resourceNames Required. Names of one or more parent resources from which to retrieve log
   *     entries:
   *     <p>"projects/[PROJECT_ID]" "organizations/[ORGANIZATION_ID]"
   *     "billingAccounts/[BILLING_ACCOUNT_ID]" "folders/[FOLDER_ID]"
   *     <p>May alternatively be one or more views
   *     projects/[PROJECT_ID]/locations/[LOCATION_ID]/buckets/[BUCKET_ID]/views/[VIEW_ID]
   *     organization/[ORGANIZATION_ID]/locations/[LOCATION_ID]/buckets/[BUCKET_ID]/views/[VIEW_ID]
   *     billingAccounts/[BILLING_ACCOUNT_ID]/locations/[LOCATION_ID]/buckets/[BUCKET_ID]/views/[VIEW_ID]
   *     folders/[FOLDER_ID]/locations/[LOCATION_ID]/buckets/[BUCKET_ID]/views/[VIEW_ID]
   *     <p>Projects listed in the `project_ids` field are added to this list.
   * @param filter Optional. A filter that chooses which log entries to return. See [Advanced Logs
   *     Queries](https://cloud.google.com/logging/docs/view/advanced-queries). Only log entries
   *     that match the filter are returned. An empty filter matches all log entries in the
   *     resources listed in `resource_names`. Referencing a parent resource that is not listed in
   *     `resource_names` will cause the filter to return no results. The maximum length of the
   *     filter is 20000 characters.
   * @param orderBy Optional. How the results should be sorted. Presently, the only permitted values
   *     are `"timestamp asc"` (default) and `"timestamp desc"`. The first option returns entries in
   *     order of increasing values of `LogEntry.timestamp` (oldest first), and the second option
   *     returns entries in order of decreasing timestamps (newest first). Entries with equal
   *     timestamps are returned in order of their `insert_id` values.
   * @throws com.google.api.gax.rpc.ApiException if the remote call fails
   */
  public final ListLogEntriesPagedResponse listLogEntries(
      List<String> resourceNames, String filter, String orderBy) {
    ListLogEntriesRequest request =
        ListLogEntriesRequest.newBuilder()
            .addAllResourceNames(resourceNames)
            .setFilter(filter)
            .setOrderBy(orderBy)
            .build();
    return listLogEntries(request);
  }

  // AUTO-GENERATED DOCUMENTATION AND METHOD.
  /**
   * Lists log entries. Use this method to retrieve log entries that originated from a
   * project/folder/organization/billing account. For ways to export log entries, see [Exporting
   * Logs](https://cloud.google.com/logging/docs/export).
   *
   * <p>Sample code:
   *
   * <pre>{@code
   * try (LoggingClient loggingClient = LoggingClient.create()) {
   *   ListLogEntriesRequest request =
   *       ListLogEntriesRequest.newBuilder()
   *           .addAllResourceNames(new ArrayList<String>())
   *           .setFilter("filter-1274492040")
   *           .setOrderBy("orderBy-1207110587")
   *           .setPageSize(883849137)
   *           .setPageToken("pageToken873572522")
   *           .build();
   *   for (LogEntry element : loggingClient.listLogEntries(request).iterateAll()) {
   *     // doThingsWith(element);
   *   }
   * }
   * }</pre>
   *
   * @param request The request object containing all of the parameters for the API call.
   * @throws com.google.api.gax.rpc.ApiException if the remote call fails
   */
  public final ListLogEntriesPagedResponse listLogEntries(ListLogEntriesRequest request) {
    return listLogEntriesPagedCallable().call(request);
  }

  // AUTO-GENERATED DOCUMENTATION AND METHOD.
  /**
   * Lists log entries. Use this method to retrieve log entries that originated from a
   * project/folder/organization/billing account. For ways to export log entries, see [Exporting
   * Logs](https://cloud.google.com/logging/docs/export).
   *
   * <p>Sample code:
   *
   * <pre>{@code
   * try (LoggingClient loggingClient = LoggingClient.create()) {
   *   ListLogEntriesRequest request =
   *       ListLogEntriesRequest.newBuilder()
   *           .addAllResourceNames(new ArrayList<String>())
   *           .setFilter("filter-1274492040")
   *           .setOrderBy("orderBy-1207110587")
   *           .setPageSize(883849137)
   *           .setPageToken("pageToken873572522")
   *           .build();
   *   ApiFuture<LogEntry> future = loggingClient.listLogEntriesPagedCallable().futureCall(request);
   *   // Do something.
   *   for (LogEntry element : future.get().iterateAll()) {
   *     // doThingsWith(element);
   *   }
   * }
   * }</pre>
   */
  public final UnaryCallable<ListLogEntriesRequest, ListLogEntriesPagedResponse>
      listLogEntriesPagedCallable() {
    return stub.listLogEntriesPagedCallable();
  }

  // AUTO-GENERATED DOCUMENTATION AND METHOD.
  /**
   * Lists log entries. Use this method to retrieve log entries that originated from a
   * project/folder/organization/billing account. For ways to export log entries, see [Exporting
   * Logs](https://cloud.google.com/logging/docs/export).
   *
   * <p>Sample code:
   *
   * <pre>{@code
   * try (LoggingClient loggingClient = LoggingClient.create()) {
   *   ListLogEntriesRequest request =
   *       ListLogEntriesRequest.newBuilder()
   *           .addAllResourceNames(new ArrayList<String>())
   *           .setFilter("filter-1274492040")
   *           .setOrderBy("orderBy-1207110587")
   *           .setPageSize(883849137)
   *           .setPageToken("pageToken873572522")
   *           .build();
   *   while (true) {
   *     ListLogEntriesResponse response = loggingClient.listLogEntriesCallable().call(request);
   *     for (LogEntry element : response.getResponsesList()) {
   *       // doThingsWith(element);
   *     }
   *     String nextPageToken = response.getNextPageToken();
   *     if (!Strings.isNullOrEmpty(nextPageToken)) {
   *       request = request.toBuilder().setPageToken(nextPageToken).build();
   *     } else {
   *       break;
   *     }
   *   }
   * }
   * }</pre>
   */
  public final UnaryCallable<ListLogEntriesRequest, ListLogEntriesResponse>
      listLogEntriesCallable() {
    return stub.listLogEntriesCallable();
  }

  // AUTO-GENERATED DOCUMENTATION AND METHOD.
  /**
   * Lists the descriptors for monitored resource types used by Logging.
   *
   * <p>Sample code:
   *
   * <pre>{@code
   * try (LoggingClient loggingClient = LoggingClient.create()) {
   *   ListMonitoredResourceDescriptorsRequest request =
   *       ListMonitoredResourceDescriptorsRequest.newBuilder()
   *           .setPageSize(883849137)
   *           .setPageToken("pageToken873572522")
   *           .build();
   *   for (MonitoredResourceDescriptor element :
   *       loggingClient.listMonitoredResourceDescriptors(request).iterateAll()) {
   *     // doThingsWith(element);
   *   }
   * }
   * }</pre>
   *
   * @param request The request object containing all of the parameters for the API call.
   * @throws com.google.api.gax.rpc.ApiException if the remote call fails
   */
  public final ListMonitoredResourceDescriptorsPagedResponse listMonitoredResourceDescriptors(
      ListMonitoredResourceDescriptorsRequest request) {
    return listMonitoredResourceDescriptorsPagedCallable().call(request);
  }

  // AUTO-GENERATED DOCUMENTATION AND METHOD.
  /**
   * Lists the descriptors for monitored resource types used by Logging.
   *
   * <p>Sample code:
   *
   * <pre>{@code
   * try (LoggingClient loggingClient = LoggingClient.create()) {
   *   ListMonitoredResourceDescriptorsRequest request =
   *       ListMonitoredResourceDescriptorsRequest.newBuilder()
   *           .setPageSize(883849137)
   *           .setPageToken("pageToken873572522")
   *           .build();
   *   ApiFuture<MonitoredResourceDescriptor> future =
   *       loggingClient.listMonitoredResourceDescriptorsPagedCallable().futureCall(request);
   *   // Do something.
   *   for (MonitoredResourceDescriptor element : future.get().iterateAll()) {
   *     // doThingsWith(element);
   *   }
   * }
   * }</pre>
   */
  public final UnaryCallable<
          ListMonitoredResourceDescriptorsRequest, ListMonitoredResourceDescriptorsPagedResponse>
      listMonitoredResourceDescriptorsPagedCallable() {
    return stub.listMonitoredResourceDescriptorsPagedCallable();
  }

  // AUTO-GENERATED DOCUMENTATION AND METHOD.
  /**
   * Lists the descriptors for monitored resource types used by Logging.
   *
   * <p>Sample code:
   *
   * <pre>{@code
   * try (LoggingClient loggingClient = LoggingClient.create()) {
   *   ListMonitoredResourceDescriptorsRequest request =
   *       ListMonitoredResourceDescriptorsRequest.newBuilder()
   *           .setPageSize(883849137)
   *           .setPageToken("pageToken873572522")
   *           .build();
   *   while (true) {
   *     ListMonitoredResourceDescriptorsResponse response =
   *         loggingClient.listMonitoredResourceDescriptorsCallable().call(request);
   *     for (MonitoredResourceDescriptor element : response.getResponsesList()) {
   *       // doThingsWith(element);
   *     }
   *     String nextPageToken = response.getNextPageToken();
   *     if (!Strings.isNullOrEmpty(nextPageToken)) {
   *       request = request.toBuilder().setPageToken(nextPageToken).build();
   *     } else {
   *       break;
   *     }
   *   }
   * }
   * }</pre>
   */
  public final UnaryCallable<
          ListMonitoredResourceDescriptorsRequest, ListMonitoredResourceDescriptorsResponse>
      listMonitoredResourceDescriptorsCallable() {
    return stub.listMonitoredResourceDescriptorsCallable();
  }

  // AUTO-GENERATED DOCUMENTATION AND METHOD.
  /**
   * Lists the logs in projects, organizations, folders, or billing accounts. Only logs that have
   * entries are listed.
   *
   * <p>Sample code:
   *
   * <pre>{@code
   * try (LoggingClient loggingClient = LoggingClient.create()) {
   *   BillingAccountName parent = BillingAccountName.of("[BILLING_ACCOUNT]");
   *   for (String element : loggingClient.listLogs(parent).iterateAll()) {
   *     // doThingsWith(element);
   *   }
   * }
   * }</pre>
   *
   * @param parent Required. The resource name that owns the logs:
   *     <p>"projects/[PROJECT_ID]" "organizations/[ORGANIZATION_ID]"
   *     "billingAccounts/[BILLING_ACCOUNT_ID]" "folders/[FOLDER_ID]"
   * @throws com.google.api.gax.rpc.ApiException if the remote call fails
   */
  public final ListLogsPagedResponse listLogs(BillingAccountName parent) {
    ListLogsRequest request =
        ListLogsRequest.newBuilder().setParent(parent == null ? null : parent.toString()).build();
    return listLogs(request);
  }

  // AUTO-GENERATED DOCUMENTATION AND METHOD.
  /**
   * Lists the logs in projects, organizations, folders, or billing accounts. Only logs that have
   * entries are listed.
   *
   * <p>Sample code:
   *
   * <pre>{@code
   * try (LoggingClient loggingClient = LoggingClient.create()) {
   *   FolderName parent = FolderName.of("[FOLDER]");
   *   for (String element : loggingClient.listLogs(parent).iterateAll()) {
   *     // doThingsWith(element);
   *   }
   * }
   * }</pre>
   *
   * @param parent Required. The resource name that owns the logs:
   *     <p>"projects/[PROJECT_ID]" "organizations/[ORGANIZATION_ID]"
   *     "billingAccounts/[BILLING_ACCOUNT_ID]" "folders/[FOLDER_ID]"
   * @throws com.google.api.gax.rpc.ApiException if the remote call fails
   */
  public final ListLogsPagedResponse listLogs(FolderName parent) {
    ListLogsRequest request =
        ListLogsRequest.newBuilder().setParent(parent == null ? null : parent.toString()).build();
    return listLogs(request);
  }

  // AUTO-GENERATED DOCUMENTATION AND METHOD.
  /**
   * Lists the logs in projects, organizations, folders, or billing accounts. Only logs that have
   * entries are listed.
   *
   * <p>Sample code:
   *
   * <pre>{@code
   * try (LoggingClient loggingClient = LoggingClient.create()) {
   *   OrganizationName parent = OrganizationName.of("[ORGANIZATION]");
   *   for (String element : loggingClient.listLogs(parent).iterateAll()) {
   *     // doThingsWith(element);
   *   }
   * }
   * }</pre>
   *
   * @param parent Required. The resource name that owns the logs:
   *     <p>"projects/[PROJECT_ID]" "organizations/[ORGANIZATION_ID]"
   *     "billingAccounts/[BILLING_ACCOUNT_ID]" "folders/[FOLDER_ID]"
   * @throws com.google.api.gax.rpc.ApiException if the remote call fails
   */
  public final ListLogsPagedResponse listLogs(OrganizationName parent) {
    ListLogsRequest request =
        ListLogsRequest.newBuilder().setParent(parent == null ? null : parent.toString()).build();
    return listLogs(request);
  }

  // AUTO-GENERATED DOCUMENTATION AND METHOD.
  /**
   * Lists the logs in projects, organizations, folders, or billing accounts. Only logs that have
   * entries are listed.
   *
   * <p>Sample code:
   *
   * <pre>{@code
   * try (LoggingClient loggingClient = LoggingClient.create()) {
   *   ProjectName parent = ProjectName.of("[PROJECT]");
   *   for (String element : loggingClient.listLogs(parent).iterateAll()) {
   *     // doThingsWith(element);
   *   }
   * }
   * }</pre>
   *
   * @param parent Required. The resource name that owns the logs:
   *     <p>"projects/[PROJECT_ID]" "organizations/[ORGANIZATION_ID]"
   *     "billingAccounts/[BILLING_ACCOUNT_ID]" "folders/[FOLDER_ID]"
   * @throws com.google.api.gax.rpc.ApiException if the remote call fails
   */
  public final ListLogsPagedResponse listLogs(ProjectName parent) {
    ListLogsRequest request =
        ListLogsRequest.newBuilder().setParent(parent == null ? null : parent.toString()).build();
    return listLogs(request);
  }

  // AUTO-GENERATED DOCUMENTATION AND METHOD.
  /**
   * Lists the logs in projects, organizations, folders, or billing accounts. Only logs that have
   * entries are listed.
   *
   * <p>Sample code:
   *
   * <pre>{@code
   * try (LoggingClient loggingClient = LoggingClient.create()) {
   *   String parent = LogName.ofProjectLogName("[PROJECT]", "[LOG]").toString();
   *   for (String element : loggingClient.listLogs(parent).iterateAll()) {
   *     // doThingsWith(element);
   *   }
   * }
   * }</pre>
   *
   * @param parent Required. The resource name that owns the logs:
   *     <p>"projects/[PROJECT_ID]" "organizations/[ORGANIZATION_ID]"
   *     "billingAccounts/[BILLING_ACCOUNT_ID]" "folders/[FOLDER_ID]"
   * @throws com.google.api.gax.rpc.ApiException if the remote call fails
   */
  public final ListLogsPagedResponse listLogs(String parent) {
    ListLogsRequest request = ListLogsRequest.newBuilder().setParent(parent).build();
    return listLogs(request);
  }

  // AUTO-GENERATED DOCUMENTATION AND METHOD.
  /**
   * Lists the logs in projects, organizations, folders, or billing accounts. Only logs that have
   * entries are listed.
   *
   * <p>Sample code:
   *
   * <pre>{@code
   * try (LoggingClient loggingClient = LoggingClient.create()) {
   *   ListLogsRequest request =
   *       ListLogsRequest.newBuilder()
   *           .setParent(LogName.ofProjectLogName("[PROJECT]", "[LOG]").toString())
   *           .setPageSize(883849137)
   *           .setPageToken("pageToken873572522")
   *           .addAllResourceNames(new ArrayList<String>())
   *           .build();
   *   for (String element : loggingClient.listLogs(request).iterateAll()) {
   *     // doThingsWith(element);
   *   }
   * }
   * }</pre>
   *
   * @param request The request object containing all of the parameters for the API call.
   * @throws com.google.api.gax.rpc.ApiException if the remote call fails
   */
  public final ListLogsPagedResponse listLogs(ListLogsRequest request) {
    return listLogsPagedCallable().call(request);
  }

  // AUTO-GENERATED DOCUMENTATION AND METHOD.
  /**
   * Lists the logs in projects, organizations, folders, or billing accounts. Only logs that have
   * entries are listed.
   *
   * <p>Sample code:
   *
   * <pre>{@code
   * try (LoggingClient loggingClient = LoggingClient.create()) {
   *   ListLogsRequest request =
   *       ListLogsRequest.newBuilder()
   *           .setParent(LogName.ofProjectLogName("[PROJECT]", "[LOG]").toString())
   *           .setPageSize(883849137)
   *           .setPageToken("pageToken873572522")
   *           .addAllResourceNames(new ArrayList<String>())
   *           .build();
   *   ApiFuture<String> future = loggingClient.listLogsPagedCallable().futureCall(request);
   *   // Do something.
   *   for (String element : future.get().iterateAll()) {
   *     // doThingsWith(element);
   *   }
   * }
   * }</pre>
   */
  public final UnaryCallable<ListLogsRequest, ListLogsPagedResponse> listLogsPagedCallable() {
    return stub.listLogsPagedCallable();
  }

  // AUTO-GENERATED DOCUMENTATION AND METHOD.
  /**
   * Lists the logs in projects, organizations, folders, or billing accounts. Only logs that have
   * entries are listed.
   *
   * <p>Sample code:
   *
   * <pre>{@code
   * try (LoggingClient loggingClient = LoggingClient.create()) {
   *   ListLogsRequest request =
   *       ListLogsRequest.newBuilder()
   *           .setParent(LogName.ofProjectLogName("[PROJECT]", "[LOG]").toString())
   *           .setPageSize(883849137)
   *           .setPageToken("pageToken873572522")
   *           .addAllResourceNames(new ArrayList<String>())
   *           .build();
   *   while (true) {
   *     ListLogsResponse response = loggingClient.listLogsCallable().call(request);
   *     for (String element : response.getResponsesList()) {
   *       // doThingsWith(element);
   *     }
   *     String nextPageToken = response.getNextPageToken();
   *     if (!Strings.isNullOrEmpty(nextPageToken)) {
   *       request = request.toBuilder().setPageToken(nextPageToken).build();
   *     } else {
   *       break;
   *     }
   *   }
   * }
   * }</pre>
   */
  public final UnaryCallable<ListLogsRequest, ListLogsResponse> listLogsCallable() {
    return stub.listLogsCallable();
  }

  // AUTO-GENERATED DOCUMENTATION AND METHOD.
  /**
   * Streaming read of log entries as they are ingested. Until the stream is terminated, it will
   * continue reading logs.
   *
   * <p>Sample code:
   *
   * <pre>{@code
   * try (LoggingClient loggingClient = LoggingClient.create()) {
   *   BidiStream<TailLogEntriesRequest, TailLogEntriesResponse> bidiStream =
   *       loggingClient.tailLogEntriesCallable().call();
   *   TailLogEntriesRequest request =
   *       TailLogEntriesRequest.newBuilder()
   *           .addAllResourceNames(new ArrayList<String>())
   *           .setFilter("filter-1274492040")
   *           .setBufferWindow(Duration.newBuilder().build())
   *           .build();
   *   bidiStream.send(request);
   *   for (TailLogEntriesResponse response : bidiStream) {
   *     // Do something when a response is received.
   *   }
   * }
   * }</pre>
   */
  public final BidiStreamingCallable<TailLogEntriesRequest, TailLogEntriesResponse>
      tailLogEntriesCallable() {
    return stub.tailLogEntriesCallable();
  }

  @Override
  public final void close() {
    stub.close();
  }

  @Override
  public void shutdown() {
    stub.shutdown();
  }

  @Override
  public boolean isShutdown() {
    return stub.isShutdown();
  }

  @Override
  public boolean isTerminated() {
    return stub.isTerminated();
  }

  @Override
  public void shutdownNow() {
    stub.shutdownNow();
  }

  @Override
  public boolean awaitTermination(long duration, TimeUnit unit) throws InterruptedException {
    return stub.awaitTermination(duration, unit);
  }

  public static class ListLogEntriesPagedResponse
      extends AbstractPagedListResponse<
          ListLogEntriesRequest,
          ListLogEntriesResponse,
          LogEntry,
          ListLogEntriesPage,
          ListLogEntriesFixedSizeCollection> {

    public static ApiFuture<ListLogEntriesPagedResponse> createAsync(
        PageContext<ListLogEntriesRequest, ListLogEntriesResponse, LogEntry> context,
        ApiFuture<ListLogEntriesResponse> futureResponse) {
      ApiFuture<ListLogEntriesPage> futurePage =
          ListLogEntriesPage.createEmptyPage().createPageAsync(context, futureResponse);
      return ApiFutures.transform(
          futurePage,
          input -> new ListLogEntriesPagedResponse(input),
          MoreExecutors.directExecutor());
    }

    private ListLogEntriesPagedResponse(ListLogEntriesPage page) {
      super(page, ListLogEntriesFixedSizeCollection.createEmptyCollection());
    }
  }

  public static class ListLogEntriesPage
      extends AbstractPage<
          ListLogEntriesRequest, ListLogEntriesResponse, LogEntry, ListLogEntriesPage> {

    private ListLogEntriesPage(
        PageContext<ListLogEntriesRequest, ListLogEntriesResponse, LogEntry> context,
        ListLogEntriesResponse response) {
      super(context, response);
    }

    private static ListLogEntriesPage createEmptyPage() {
      return new ListLogEntriesPage(null, null);
    }

    @Override
    protected ListLogEntriesPage createPage(
        PageContext<ListLogEntriesRequest, ListLogEntriesResponse, LogEntry> context,
        ListLogEntriesResponse response) {
      return new ListLogEntriesPage(context, response);
    }

    @Override
    public ApiFuture<ListLogEntriesPage> createPageAsync(
        PageContext<ListLogEntriesRequest, ListLogEntriesResponse, LogEntry> context,
        ApiFuture<ListLogEntriesResponse> futureResponse) {
      return super.createPageAsync(context, futureResponse);
    }
  }

  public static class ListLogEntriesFixedSizeCollection
      extends AbstractFixedSizeCollection<
          ListLogEntriesRequest,
          ListLogEntriesResponse,
          LogEntry,
          ListLogEntriesPage,
          ListLogEntriesFixedSizeCollection> {

    private ListLogEntriesFixedSizeCollection(List<ListLogEntriesPage> pages, int collectionSize) {
      super(pages, collectionSize);
    }

    private static ListLogEntriesFixedSizeCollection createEmptyCollection() {
      return new ListLogEntriesFixedSizeCollection(null, 0);
    }

    @Override
    protected ListLogEntriesFixedSizeCollection createCollection(
        List<ListLogEntriesPage> pages, int collectionSize) {
      return new ListLogEntriesFixedSizeCollection(pages, collectionSize);
    }
  }

  public static class ListMonitoredResourceDescriptorsPagedResponse
      extends AbstractPagedListResponse<
          ListMonitoredResourceDescriptorsRequest,
          ListMonitoredResourceDescriptorsResponse,
          MonitoredResourceDescriptor,
          ListMonitoredResourceDescriptorsPage,
          ListMonitoredResourceDescriptorsFixedSizeCollection> {

    public static ApiFuture<ListMonitoredResourceDescriptorsPagedResponse> createAsync(
        PageContext<
                ListMonitoredResourceDescriptorsRequest,
                ListMonitoredResourceDescriptorsResponse,
                MonitoredResourceDescriptor>
            context,
        ApiFuture<ListMonitoredResourceDescriptorsResponse> futureResponse) {
      ApiFuture<ListMonitoredResourceDescriptorsPage> futurePage =
          ListMonitoredResourceDescriptorsPage.createEmptyPage()
              .createPageAsync(context, futureResponse);
      return ApiFutures.transform(
          futurePage,
          input -> new ListMonitoredResourceDescriptorsPagedResponse(input),
          MoreExecutors.directExecutor());
    }

    private ListMonitoredResourceDescriptorsPagedResponse(
        ListMonitoredResourceDescriptorsPage page) {
      super(page, ListMonitoredResourceDescriptorsFixedSizeCollection.createEmptyCollection());
    }
  }

  public static class ListMonitoredResourceDescriptorsPage
      extends AbstractPage<
          ListMonitoredResourceDescriptorsRequest,
          ListMonitoredResourceDescriptorsResponse,
          MonitoredResourceDescriptor,
          ListMonitoredResourceDescriptorsPage> {

    private ListMonitoredResourceDescriptorsPage(
        PageContext<
                ListMonitoredResourceDescriptorsRequest,
                ListMonitoredResourceDescriptorsResponse,
                MonitoredResourceDescriptor>
            context,
        ListMonitoredResourceDescriptorsResponse response) {
      super(context, response);
    }

    private static ListMonitoredResourceDescriptorsPage createEmptyPage() {
      return new ListMonitoredResourceDescriptorsPage(null, null);
    }

    @Override
    protected ListMonitoredResourceDescriptorsPage createPage(
        PageContext<
                ListMonitoredResourceDescriptorsRequest,
                ListMonitoredResourceDescriptorsResponse,
                MonitoredResourceDescriptor>
            context,
        ListMonitoredResourceDescriptorsResponse response) {
      return new ListMonitoredResourceDescriptorsPage(context, response);
    }

    @Override
    public ApiFuture<ListMonitoredResourceDescriptorsPage> createPageAsync(
        PageContext<
                ListMonitoredResourceDescriptorsRequest,
                ListMonitoredResourceDescriptorsResponse,
                MonitoredResourceDescriptor>
            context,
        ApiFuture<ListMonitoredResourceDescriptorsResponse> futureResponse) {
      return super.createPageAsync(context, futureResponse);
    }
  }

  public static class ListMonitoredResourceDescriptorsFixedSizeCollection
      extends AbstractFixedSizeCollection<
          ListMonitoredResourceDescriptorsRequest,
          ListMonitoredResourceDescriptorsResponse,
          MonitoredResourceDescriptor,
          ListMonitoredResourceDescriptorsPage,
          ListMonitoredResourceDescriptorsFixedSizeCollection> {

    private ListMonitoredResourceDescriptorsFixedSizeCollection(
        List<ListMonitoredResourceDescriptorsPage> pages, int collectionSize) {
      super(pages, collectionSize);
    }

    private static ListMonitoredResourceDescriptorsFixedSizeCollection createEmptyCollection() {
      return new ListMonitoredResourceDescriptorsFixedSizeCollection(null, 0);
    }

    @Override
    protected ListMonitoredResourceDescriptorsFixedSizeCollection createCollection(
        List<ListMonitoredResourceDescriptorsPage> pages, int collectionSize) {
      return new ListMonitoredResourceDescriptorsFixedSizeCollection(pages, collectionSize);
    }
  }

  public static class ListLogsPagedResponse
      extends AbstractPagedListResponse<
          ListLogsRequest, ListLogsResponse, String, ListLogsPage, ListLogsFixedSizeCollection> {

    public static ApiFuture<ListLogsPagedResponse> createAsync(
        PageContext<ListLogsRequest, ListLogsResponse, String> context,
        ApiFuture<ListLogsResponse> futureResponse) {
      ApiFuture<ListLogsPage> futurePage =
          ListLogsPage.createEmptyPage().createPageAsync(context, futureResponse);
      return ApiFutures.transform(
          futurePage, input -> new ListLogsPagedResponse(input), MoreExecutors.directExecutor());
    }

    private ListLogsPagedResponse(ListLogsPage page) {
      super(page, ListLogsFixedSizeCollection.createEmptyCollection());
    }
  }

  public static class ListLogsPage
      extends AbstractPage<ListLogsRequest, ListLogsResponse, String, ListLogsPage> {

    private ListLogsPage(
        PageContext<ListLogsRequest, ListLogsResponse, String> context, ListLogsResponse response) {
      super(context, response);
    }

    private static ListLogsPage createEmptyPage() {
      return new ListLogsPage(null, null);
    }

    @Override
    protected ListLogsPage createPage(
        PageContext<ListLogsRequest, ListLogsResponse, String> context, ListLogsResponse response) {
      return new ListLogsPage(context, response);
    }

    @Override
    public ApiFuture<ListLogsPage> createPageAsync(
        PageContext<ListLogsRequest, ListLogsResponse, String> context,
        ApiFuture<ListLogsResponse> futureResponse) {
      return super.createPageAsync(context, futureResponse);
    }
  }

  public static class ListLogsFixedSizeCollection
      extends AbstractFixedSizeCollection<
          ListLogsRequest, ListLogsResponse, String, ListLogsPage, ListLogsFixedSizeCollection> {

    private ListLogsFixedSizeCollection(List<ListLogsPage> pages, int collectionSize) {
      super(pages, collectionSize);
    }

    private static ListLogsFixedSizeCollection createEmptyCollection() {
      return new ListLogsFixedSizeCollection(null, 0);
    }

    @Override
    protected ListLogsFixedSizeCollection createCollection(
        List<ListLogsPage> pages, int collectionSize) {
      return new ListLogsFixedSizeCollection(pages, collectionSize);
    }
  }
}