Get details about a message

This guide explains how to use the get() method on the Message resource of the Google Chat API to return details about a text or card message.

In the Chat API, a Chat message is represented by the Message resource. While Chat users can only send messages that contain text, Chat apps can use many other messaging features, including displaying static or interactive user interfaces, collecting information from users, and delivering messages privately. To learn more about messaging features available for the Chat API, see the Google Chat messages overview.

Prerequisites

Node.js

Python

Java

Apps Script

Get a message with user authentication

To get details about a message with user authentication, pass the following in your request:

  • Specify the chat.messages.readonly or chat.messages authorization scope.
  • Call the GetMessage() method.
  • Set name to the resource name of the message to get.

The following example gets a message with user authentication:

Node.js

chat/client-libraries/cloud/get-message-user-cred.js
import {createClientWithUserCredentials} from './authentication-utils.js';

const USER_AUTH_OAUTH_SCOPES = ['https://www.googleapis.com/auth/chat.messages.readonly'];

// This sample shows how to get message with user credential
async function main() {
  // Create a client
  const chatClient = await createClientWithUserCredentials(USER_AUTH_OAUTH_SCOPES);

  // Initialize request argument(s)
  const request = {
    // Replace SPACE_NAME and MESSAGE_NAME here
    name: 'spaces/SPACE_NAME/messages/MESSAGE_NAME'
  };

  // Make the request
  const response = await chatClient.getMessage(request);

  // Handle the response
  console.log(response);
}

main().catch(console.error);

Python

chat/client-libraries/cloud/get_message_user_cred.py
from authentication_utils import create_client_with_user_credentials
import google.oauth2.credentials

from google.apps import chat_v1 as google_chat

SCOPES = ["https://www.googleapis.com/auth/chat.messages.readonly"]

# This sample shows how to get message with user credential
def get_message_with_user_cred():
    # Create a client
    client = create_client_with_user_credentials(SCOPES)

    # Initialize request argument(s)
    request = google_chat.GetMessageRequest(
        # Replace SPACE_NAME and MESSAGE_NAME here
        name = "spaces/SPACE_NAME/messages/MESSAGE_NAME",
    )

    # Make the request
    response = client.get_message(request)

    # Handle the response
    print(response)

get_message_with_user_cred()

Java

chat/client-libraries/cloud/src/main/java/com/google/workspace/api/chat/samples/GetMessageUserCred.java
import com.google.chat.v1.ChatServiceClient;
import com.google.chat.v1.GetMessageRequest;
import com.google.chat.v1.Message;

// This sample shows how to get message with user credential.
public class GetMessageUserCred {

  private static final String SCOPE =
    "https://www.googleapis.com/auth/chat.messages.readonly";

  public static void main(String[] args) throws Exception {
    try (ChatServiceClient chatServiceClient =
        AuthenticationUtils.createClientWithUserCredentials(
          ImmutableList.of(SCOPE))) {
      GetMessageRequest.Builder request = GetMessageRequest.newBuilder()
        // replace SPACE_NAME and MESSAGE_NAME here
        .setName("spaces/SPACE_NAME/members/MESSAGE_NAME");
      Message response = chatServiceClient.getMessage(request.build());

      System.out.println(JsonFormat.printer().print(response));
    }
  }
}

Apps Script

chat/advanced-service/Main.gs
/**
 * This sample shows how to get message with user credential
 * 
 * It relies on the OAuth2 scope 'https://www.googleapis.com/auth/chat.messages.readonly'
 * referenced in the manifest file (appsscript.json).
 */
function getMessageUserCred() {
  // Initialize request argument(s)
  // TODO(developer): Replace SPACE_NAME and MESSAGE_NAME here
  const name = 'spaces/SPACE_NAME/messages/MESSAGE_NAME';

  // Make the request
  const response = Chat.Spaces.Messages.get(name);

  // Handle the response
  console.log(response);
}

To run this sample, replace the following:

  • SPACE_NAME: the ID from the space's name. You can obtain the ID by calling the ListSpaces() method or from the space's URL.
  • MESSAGE_NAME: the ID from the message's name. You can obtain the ID from the response body returned after creating a message asynchronously with the Chat API, or with the custom name assigned to the message at creation.

The Chat API returns an instance of Message that details the specified message.

Get a message with app authentication

To get details about a message with app authentication, pass the following in your request:

  • Specify the chat.bot authorization scope.
  • Call the GetMessage() method.
  • Set name to the resource name of the message to get.

The following example gets a message with app authentication:

Node.js

chat/client-libraries/cloud/get-message-app-cred.js
import {createClientWithAppCredentials} from './authentication-utils.js';

// This sample shows how to get message with app credential
async function main() {
  // Create a client
  const chatClient = createClientWithAppCredentials();

  // Initialize request argument(s)
  const request = {
    // Replace SPACE_NAME and MESSAGE_NAME here
    name: 'spaces/SPACE_NAME/messages/MESSAGE_NAME'
  };

  // Make the request
  const response = await chatClient.getMessage(request);

  // Handle the response
  console.log(response);
}

main().catch(console.error);

Python

chat/client-libraries/cloud/get_message_app_cred.py
from authentication_utils import create_client_with_app_credentials
from google.apps import chat_v1 as google_chat

# This sample shows how to get message with app credential
def get_message_with_app_cred():
    # Create a client
    client = create_client_with_app_credentials()

    # Initialize request argument(s)
    request = google_chat.GetMessageRequest(
        # Replace SPACE_NAME and MESSAGE_NAME here
        name = 'spaces/SPACE_NAME/messages/MESSAGE_NAME',
    )

    # Make the request
    response = client.get_message(request=request)

    # Handle the response
    print(response)

get_message_with_app_cred()

Java

chat/client-libraries/cloud/src/main/java/com/google/workspace/api/chat/samples/GetMessageAppCred.java
import com.google.chat.v1.ChatServiceClient;
import com.google.chat.v1.GetMessageRequest;
import com.google.chat.v1.Message;

// This sample shows how to get message with app credential.
public class GetMessageAppCred {

  public static void main(String[] args) throws Exception {
    try (ChatServiceClient chatServiceClient =
        AuthenticationUtils.createClientWithAppCredentials()) {
      GetMessageRequest.Builder request = GetMessageRequest.newBuilder()
        // replace SPACE_NAME and MESSAGE_NAME here
        .setName("spaces/SPACE_NAME/members/MESSAGE_NAME");
      Message response = chatServiceClient.getMessage(request.build());

      System.out.println(JsonFormat.printer().print(response));
    }
  }
}

Apps Script

chat/advanced-service/Main.gs
/**
 * This sample shows how to get message with app credential
 * 
 * It relies on the OAuth2 scope 'https://www.googleapis.com/auth/chat.bot'
 * used by service accounts.
 */
function getMessageAppCred() {
  // Initialize request argument(s)
  // TODO(developer): Replace SPACE_NAME and MESSAGE_NAME here
  const name = 'spaces/SPACE_NAME/messages/MESSAGE_NAME';
  const parameters = {};

  // Make the request
  const response = Chat.Spaces.Messages.get(name, parameters, getHeaderWithAppCredentials());

  // Handle the response
  console.log(response);
}

To run this sample, replace the following:

  • SPACE_NAME: the ID from the space's name. You can obtain the ID by calling the ListSpaces() method or from the space's URL.
  • MESSAGE_NAME: the ID from the message's name. You can obtain the ID from the response body returned after creating a message asynchronously with the Chat API, or with the custom name assigned to the message at creation.

The Chat API returns an instance of Message that details the specified message.