参数“documentPath”的值不是有效的资源路径。 Firebase 云函数

Question

I have a firestore trigger. But I encountered an error

sendChatPushNotification
Error: Value for argument "documentPath" is not a valid resource path. Path must be a non-empty string.
    at Object.validateResourcePath (/workspace/node_modules/@google-cloud/firestore/build/src/path.js:403:15)
    at CollectionReference.doc (/workspace/node_modules/@google-cloud/firestore/build/src/reference.js:1988:20)
    at exports.sendChatPushNotification.functions.firestore.document.onWrite (/workspace/index.js:38:8)
    at cloudFunction (/workspace/node_modules/firebase-functions/lib/cloud-functions.js:132:23)
    at Promise.resolve.then (/layers/google.nodejs.functions-framework/functions-framework/node_modules/@google-cloud/functions-framework/build/src/invoker.js:198:28)
    at process._tickCallback (internal/process/next_tick.js:68:7) 

I got this error after update my dependencies. Now my package.json

  "dependencies": {
    "firebase-admin": "9.0.0",
    "firebase-functions": "^3.8.0"
  },
  "devDependencies": {
    "eslint": "^7.5.0",
    "eslint-plugin-promise": "^4.2.1"
  },
  "engines": {
    "node": "10"
  },

And this is my cloud function

exports.sendChatPushNotification = functions.firestore
  .document("channels/{some_channel_document}/thread/{some_thread_document}")
  .onWrite((change, context) => {
    const data = change.after.data();
    const senderFirstName = data.senderFirstName;
    const content = data.content;
    const recipientID = data.recipientID;
    const url = data.url;

    let payload = {};

    if (url) {
      payload = {
        notification: {
          title: "Yeni Mesaj",
          body: `${senderFirstName} bir resim gönderdi`
        }
      };
    } else {
      payload = {
        notification: {
          title: "Yeni Mesaj",
          body: `${senderFirstName}: ${content}`
        }
      };
    }

    let pushToken = "";
    return firestore
      .collection("users")
      .doc(recipientID)
      .get()
      .then(doc => {
        pushToken = doc.data().pushToken;
        return admin.messaging().sendToDevice(pushToken, payload);
      });
  });

I tried different path like this ${some_channel_document} but the problem is not solved

Thanks for your help...

Answer 1

I don't think the problem is with the path on which you trigger the Cloud Function (ie exports.sendChatPushNotification = functions.firestore.document("channels/{some_channel_document}/thread/{some_thread_document}").onWrite((change, context) => {}) is correct).

The problem most probably comes from the other place where you declare a DocumentReference in your code, ie:

firestore.collection("users").doc(recipientID)...

You should check the value of recipientID .