Question

我正在使用Android上的Firebase Cloud Functions库，并使用getHttpsCallable来调用云函数。

问题在于该函数需要10到15秒才能将结果返回给客户端，因此客户端会引发异常java.net.SocketTimeoutException: timeout。

代码

    // Create the arguments to the callable function.
    Map<String, Object> data = new HashMap<>();
    data.put("info", info);
    mFunctions.getHttpsCallable(function)
            .call(data)
            .continueWith(new Continuation<HttpsCallableResult, String>() {
                @Override
                public String then(@NonNull Task<HttpsCallableResult> task) {
                    // This continuation runs on either success or failure, but if the task
                    // has failed then getResult() will throw an Exception which will be
                    // propagated down.
                    if (task.isSuccessful()) {
                        String result = (String) task.getResult().getData();
                        Log.v(Constants.LOG_TAG, result);
                        return result;
                    } else {
                        // The condition never was true, always logs the exception.
                        Exception e = task.getException();
                        Log.e(Constants.LOG_TAG, "Failed to join multiplayer room.", e);
                        return null;
                    }
                }
            });

如何更改超时，以便客户端在引发异常之前等待更多时间？

注意。我没有使用OkHttp，Retrofit或默认的系统网络功能，而是使用Firebase Cloud Functions库（getHttpsCallable）来调用该函数。

Answer 1

firebase-functions版本16.3.0 released 15 Mar 2019向configure the timeout添加了功能。

Answer 2

我遇到了同样的问题，所以我使用OkHttp而不是getHttpsCallable来调用https函数作为解决方法。
https.onCall的协议是公共的。
https://firebase.google.com/docs/functions/callable

使用OkHttp调用https函数的代码在这里。
https://github.com/ryuta46/firebase-callable-okhttp/blob/56adc5e29a35bdb3b355c14d734e6145da4b6809/android/app/src/main/java/com/ttechsoft/okhttp_callable/MainActivity.kt#L184-L239

已编辑。

重要部分的代码如下。

    private fun callWithOkHttp(functionName: String) {
        val idToken = idToken ?: return
        val instanceId = instanceId ?: return
        val projectId = FirebaseApp.getInstance()?.options?.projectId ?: return
        val url = "https://us-central1-$projectId.cloudfunctions.net/$functionName"


        val jsonData = JSONObject()
        jsonData.put("text", "inputText")


        val json = JSONObject()
        json.put("data", jsonData)

        val requestBody = RequestBody.create(JSON, json.toString())

        val request = Request.Builder()
            .url(url)
            .post(requestBody)
            .addHeader("Authorization", "Bearer $idToken")
            .addHeader("Firebase-Instance-ID-Token", instanceId)
            .build()


        val okHttpClient = OkHttpClient.Builder()
            .connectTimeout(1 , TimeUnit.MINUTES)
            .readTimeout(1, TimeUnit.MINUTES)
            .writeTimeout(1, TimeUnit.MINUTES)
            .build()

        Log.i(TAG, "Start Okhttp")
        okHttpClient.newCall(request).enqueue(object : Callback {
            override fun onResponse(call: Call, response: Response) {
                if (!response.isSuccessful) {
                    val message = response.body()?.string() ?: "Network Error"
                    runOnUiThread {
                        textOkHttpResult.text = message
                    }

                    return
                }
                runOnUiThread {
                    textOkHttpResult.text = "OK"
                }

                val responseBody = response.body()
                Log.i(TAG, responseBody?.string())
            }

            override fun onFailure(call: Call, e: IOException) {
                val message = e.message ?: "Unknown Network error"
                runOnUiThread {
                    textOkHttpResult.text = message
                }
            }
        })
    }

Firebase云功能更改超时

2 个答案: