com.google.firebase.messaging.TopicManagementResponse Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of firebase-admin Show documentation
This is the official Firebase Admin Java SDK. Build extraordinary native JVM apps in minutes with Firebase. The Firebase platform can power your app’s backend, user authentication, static hosting, and more.
The newest version!
/*
 * Copyright 2018 Google Inc.
 *
 * 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
 *
 *     http://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.firebase.messaging;

import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkState;

import com.google.api.client.json.GenericJson;
import com.google.common.base.MoreObjects;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.google.firebase.internal.NonNull;
import java.util.List;
import java.util.Map;

/**
 * The response produced by FCM topic management operations.
 */
public class TopicManagementResponse {

  private static final String UNKNOWN_ERROR = "unknown-error";

  // Server error codes as defined in https://developers.google.com/instance-id/reference/server
  // TODO: Should we handle other error codes here (e.g. PERMISSION_DENIED)?
  private static final Map ERROR_CODES = ImmutableMap.builder()
      .put("INVALID_ARGUMENT", "invalid-argument")
      .put("NOT_FOUND", "registration-token-not-registered")
      .put("INTERNAL", "internal-error")
      .put("TOO_MANY_TOPICS", "too-many-topics")
      .build();

  private final int successCount;
  private final List errors;

  TopicManagementResponse(List results) {
    checkArgument(results != null && !results.isEmpty(),
        "unexpected response from topic management service");
    int successCount = 0;
    ImmutableList.Builder errors = ImmutableList.builder();
    for (int i = 0; i < results.size(); i++) {
      Map result = results.get(i);
      if (result.isEmpty()) {
        successCount++;
      } else {
        errors.add(new Error(i, (String) result.get("error")));
      }
    }
    this.successCount = successCount;
    this.errors = errors.build();
  }

  /**
   * Gets the number of registration tokens that were successfully subscribed or unsubscribed.
   *
   * @return The number of successes.
   */
  public int getSuccessCount() {
    return successCount;
  }

  /**
   * Gets the number of registration tokens that could not be subscribed or unsubscribed, and
   * resulted in an error.
   *
   * @return The number of failures.
   */
  public int getFailureCount() {
    return errors.size();
  }

  /**
   * Gets a list of errors encountered while executing the topic management operation.
   *
   * @return A non-null list.
   */
  @NonNull
  public List getErrors() {
    return errors;
  }

  /**
   * A topic management error.
   */
  public static class Error {
    private final int index;
    private final String reason;

    private Error(int index, String reason) {
      this.index = index;
      this.reason = ERROR_CODES.containsKey(reason)
        ? ERROR_CODES.get(reason) : UNKNOWN_ERROR;
    }

    /**
     * Index of the registration token to which this error is related to.
     *
     * @return An index into the original registration token list.
     */
    public int getIndex() {
      return index;
    }

    /**
     * String describing the nature of the error.
     *
     * @return A non-null, non-empty error message.
     */
    @NonNull
    public String getReason() {
      return reason;
    }

    @Override
    public String toString() {
      return MoreObjects.toStringHelper(this)
              .add("index", index)
              .add("reason", reason)
              .toString();
    }
  }
}