I'm using loopback3.x. I want to integrate 3rd party APIs with loopback. For that while using loopback-connector-rest shows the error 'TypeError: Cannot initialize connector undefined: Cannot read property 'root' of undefined'. How to fix it?
Datasource configuration
"restDataSource": {
"name": "restDataSource",
"baseURL": "",
"crud": true,
"connector": "rest",
"debug": false,
"options": {
"headers": {
"accept": "application/json",
"content-type": "application/json",
"authorization": "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
},
"strictSSL": false
},
"operations": [{
"template": {
"method": "POST",
"url": "https://fcm.googleapis.com/fcm/send",
"options": {
"strictSSL": true,
"useQuerystring": true
}
},
"functions": {
"notify": ["title", "text", "click_action", "keyname", "to"]
}
}]
}
Error
TypeError: Cannot create data source "restDataSource": Cannot initialize connector "rest": Cannot read property 'root' of undefined
at /home/veena-msl/Documents/care-doc-api/node_modules/loopback-connector-rest/lib/rest-connector.js:93:28
at Array.forEach (<anonymous>)
at /home/veena-msl/Documents/care-doc-api/node_modules/loopback-connector-rest/lib/rest-connector.js:87:22
at Array.forEach (<anonymous>)
at Function.initializeDataSource [as initialize] (/home/veena-msl/Documents/care-doc-api/node_modules/loopback-connector-rest/lib/rest-connector.js:52:25)
at DataSource.setup (/home/veena-msl/Documents/care-doc-api/node_modules/loopback-datasource-juggler/lib/datasource.js:493:19)
at new DataSource (/home/veena-msl/Documents/care-doc-api/node_modules/loopback-datasource-juggler/lib/datasource.js:138:8)
at Registry.createDataSource (/home/veena-msl/Documents/care-doc-api/node_modules/loopback/lib/registry.js:364:12)
at dataSourcesFromConfig (/home/veena-msl/Documents/care-doc-api/node_modules/loopback/lib/application.js:570:19)
at Function.app.dataSource (/home/veena-msl/Documents/care-doc-api/node_modules/loopback/lib/application.js:269:14)
at /home/veena-msl/Documents/care-doc-api/node_modules/loopback-boot/lib/executor.js:191:9
at /home/veena-msl/Documents/care-doc-api/node_modules/loopback-boot/lib/executor.js:282:5
at Array.forEach (<anonymous>)
at forEachKeyedObject (/home/veena-msl/Documents/care-doc-api/node_modules/loopback-boot/lib/executor.js:281:20)
at setupDataSources (/home/veena-msl/Documents/care-doc-api/node_modules/loopback-boot/lib/executor.js:181:3)
at execute (/home/veena-msl/Documents/care-doc-api/node_modules/loopback-boot/lib/executor.js:39:3)
In the functions section, you have defined a function notify accepting several input arguments: title, text, click_action, keyname, to. However, the template section does not provide any information on how to map those arguments to an HTTP request. For example, is the title supposed to be sent via URL query or in the request body?
IIUC, you are trying to use the legacy Firbase Cloud Messaging HTTP API as described here: https://firebase.google.com/docs/cloud-messaging/http-server-ref Based on that documentation, I think all arguments of your function should be sent in the request body.
It looks like LoopBack's REST connector is not correctly detecting and handling the situation when an input argument is not mapped to any HTTP source. It should not be crashing, feel free to open a bug report in https://github.com/strongloop/loopback-connector-rest/issues
Here is a configuration that does not crash the server. I don't have a Firebase account to verify that it's working as expected.
"template": {
"method": "POST",
"url": "https://fcm.googleapis.com/fcm/send",
"options": {
"strictSSL": true,
"useQuerystring": true
},
"body": {
"title": "{title:string}",
"text": "{text:string}",
"click_action": "{click_action:string}",
"keyname": "{keyname:string}",
"to": "{to:string}"
}
},
You can learn more about different ways how to configure input arguments in the connector documentation: https://loopback.io/doc/en/lb3/REST-connector.html#defining-a-custom-method-using-a-template
Related
I have a problem with routing using API Gateway headers. I am using org.springframework.cloud.function.adapter.aws.FunctionInvoker::handleRequest as a handler request. I have two functions, they work locally. They work if I set environment variable.
If I use API Gateway headers (spring.cloud.function.definition:lowercase), I get:
{
"errorMessage": "java.lang.NullPointerException",
"errorType": "java.lang.NullPointerException",
"stackTrace": [
"org.springframework.cloud.function.adapter.aws.AWSLambdaUtils.generateMessage(AWSLambdaUtils.java:123)",
"org.springframework.cloud.function.adapter.aws.FunctionInvoker.handleRequest(FunctionInvoker.java:105)",
"java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)",
"java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)",
"java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)",
"java.base/java.lang.reflect.Method.invoke(Unknown Source)"
]
}
Example code reproducing the issue is here: https://github.com/cygi/cloudexample
POM is based on samples from Spring Cloud Function codebase (example code (https://github.com/spring-cloud/spring-cloud-function/tree/main/spring-cloud-function-samples/function-sample-aws-routing). Spring Cloud Function version is 3.2.1 (sample had a SNAPSHOT version, that uses JAVA 11, which is not available in AWS Lambda, at least without docker).
Reverting to Spring Cloud Function 3.1.6 has resolved the problem.
Test event for AWS Lambda:
{
"body": "foo",
"httpMethod": "POST",
"isBase64Encoded": false,
"headers": {
"spring.cloud.function.definition": "uppercase"
}
}
Result on 3.2.2
{
"statusCode": 417,
"headers": null,
"body": "Failed to establish route, since neither were provided: 'spring.cloud.function.definition' as Message header or as application property or 'spring.cloud.function.routing-expression' as application property."
}
Result on 3.1.6
{
"isBase64Encoded": false,
"headers": {
"id": "758c1873-9377-25af-5ca2-84f55710ff2a",
"contentType": "application/json",
"timestamp": "1644500775689"
},
"body": "\"bbbb\"",
"statusCode": 200
}
I'm trying to create token with MPGS.
I'm following this guide:
https://sample-sub.domain.mastercard.com/api/documentation/integrationGuidelines/supportedFeatures/pickAdditionalFunctionality/tokenization/tokenization.html?locale=en_US#x_tokenConfiguration
In the section "Token Operations" > "Tokenize", it says:
You can use this operation to create or update a token by storing
payment details against the token. ...
I'm posting this to help people who are frustrating like me with MPGS. I faced series of issues, and pulled my hair off many times. So here's the issues I faced and how to solve them (I'm stuck with issue #4).
Issue #1: Invalid credentials.
Fix: Make sure you're hitting the correct URL.
https://example-subdomain.mastercard.com/..
https://some.other-example.mastercard.com/..
https://MILLION-OTHER-POSSIBILITIES.mastercard.com/..
Even the documentation guide link have these same sub-domains, so make sure you're hitting the correct URL, and make sure you're following the correct documentation link.
Issue #2: Invalid parameters, or server asking for parameters although you've provided them.
Fix: If using Postman, make sure you set the parameters in "Body" > "raw" as JSON, like so:
{
"sourceOfFunds": {
"provided": {
"card": {
"expiry": {
"month": "05",
"year": "21"
},
"number": "5123456789012346"
}
},
"type": "CARD"
}
}
Issue #3: Authorization required
Fix: If using Postman, click on "Authorization", set "Type" it to Basic Auth, for "Username" set it to merchant.YOUR_MERCHANT_ID, for "Password" set it to YOUR_API_PASSWORD
Issue #4 (stuck here): Value '9999999999999999' is invalid. Card token must not be supplied
Method: PUT
URL: https://test-my.sample.gateway.mastercard.com/api/rest/version/46/merchant/MY_MERCHANT_ID/token/9999999999999999
Authorization: set correctly in Authorization tab
Body > raw:
{
"sourceOfFunds": {
"provided": {
"card": {
"expiry": {
"month": "05",
"year": "21"
},
"number": "5123456789012346"
}
},
"type": "CARD"
}
}
Response:
{
"error": {
"cause": "INVALID_REQUEST",
"explanation": "Value '9999999999999999' is invalid. Card token must not be supplied",
"field": "tokenid",
"validationType": "INVALID"
},
"result": "ERROR"
}
Q: Not sure what to do to tokenize the transaction..?! I'm stuck with issue #4.
Ok, finally figured it out. MPGS has 2 ways to create/update tokens:
Tokenization where YOU provide the token (notice: PUT method)
Tokenization where MPGS generate the token for you (notice: POST method)
They're very similar.
I got it working with the 2nd option.
Note: This is POST method !!
Method: POST
URL: https://SUBDOMAIN_YOU_SHOULD_BE_USING.mastercard.com/api/rest/version/50/merchant/YOUR_MERCHANT_ID/token
In postman, set Authorization (as described in the question, in issue #3).
Sample data to send (in postman, this should be in Body > raw):
{
"sourceOfFunds": {
"provided": {
"card": {
"expiry": {
"month": "05",
"year": "21"
},
"number": "5123456789012346"
}
},
"type": "CARD"
}
}
Sample response:
{
"repositoryId": "1000000000002",
"response": {
"gatewayCode": "BASIC_VERIFICATION_SUCCESSFUL"
},
"result": "SUCCESS",
"sourceOfFunds": {
"provided": {
"card": {
"brand": "MASTERCARD",
"expiry": "0521",
"fundingMethod": "CREDIT",
"issuer": "BANCO DEL PICHINCHA, C.A.",
"number": "512345xxxxxx2346",
"scheme": "MASTERCARD"
}
},
"type": "CARD"
},
"status": "VALID",
"token": "9717501974559694",
"usage": {
"lastUpdated": "2019-02-25T09:36:54.928Z",
"lastUpdatedBy": "1015",
"lastUsed": "2019-02-25T09:36:54.928Z"
},
"verificationStrategy": "BASIC"
}
I have an ASP.NetCore action method that is defined as:
[HttpGet]
public async Task<IActionResult> Get([FromQuery]Dictionary<string,string> values)
{
return Ok(JsonConvert.SerializeObject(values));
}
The expected query would be something like:
http://localhost:36541/api?values[someProperty]=123&values[someOther]=234
When I use Swashbuckle the resulting swagger.json file would end up like:
{
"swagger": "2.0",
"info": {
"version": "v1",
"title": "Test API"
},
"paths": {
"/api/Api": {
"get": {
"tags": [
"Api"
],
"operationId": "ApiApiGet",
"consumes": [],
"produces": [],
"parameters": [{
"name": "values",
"in": "query",
"required": false,
"type": "object"
}],
"responses": {
"200": {
"description": "Success"
}
}
}
}
},
"definitions": {}
}
But this doesn't validate using autorest or http://editor.swagger.io/
The error is:
Schema error at paths['/api/Api'].get.parameters[0]
should NOT have additional properties
additionalProperty: type, name, in, required
Jump to line 14
Schema error at paths['/api/Api'].get.parameters[0].required
should be equal to one of the allowed values
allowedValues: true
Jump to line 14
Schema error at paths['/api/Api'].get.parameters[0].in
should be equal to one of the allowed values
allowedValues: body, header, formData, path
Jump to line 15
Schema error at paths['/api/Api'].get.parameters[0].type
should be equal to one of the allowed values
allowedValues: string, number, boolean, integer, array, file
Jump to line 17
It seems that it's missing the additionalProperties property according to https://swagger.io/docs/specification/data-models/dictionaries/
How can I make this query parameter be a valid OpenAPI / Swagger definition?
Following up on the comment from #Helen
Swashbuckle does not support the OpenAPI Specification (OAS) 3.0 yet, so you should not have objects (such as dictionaries) on the query string.
My recommendation change that action to a Post and get the values from the Body, also since your response is IActionResult consider using SwaggerResponse something like this:
[HttpPost]
[SwaggerResponse(200, typeof(Dictionary<string, string>), "This returns a dictionary.")]
public async Task<IActionResult> Post([FromBody]Dictionary<string,string> values)
{
return Ok(JsonConvert.SerializeObject(values));
}
Update:
I was also looking into the possibility of sending the GET with a body, and there seems to be a lot of debate about it:
HTTP GET with request body
If I want my Actionable Message to send a HttpPOST to an Azure Function or Azure logic app, how do I get this working?
I have tried the following two senario's with out any luck:
Azure function with Azure Active Directory Authentication. When I call it, I get the following response:
{
"innerErrorCode":"ProviderException",
"innerErrorMessage":null,
"authenticationUrl":null,
"displayMessage":"The action could not be completed."
}
This target URL is registered in the Actionable Email Developer Dashboard.
The function is not even triggered, so the error is coming from
/actions/userid/messages/.../executeAction
call.
Azure function with no authentication, I get the following response:
{
"innerErrorCode":"InvalidTargetUrlException",
"innerErrorMessage":null,
"authenticationUrl":null,
"displayMessage":"Target URL
'https://mysite.azurewebsites.net/api/ActionableMessage' is not allowed."
}
Thanks
Can you share the actionable message json which you are using to send mail?
you need to have a entry in potential action as a input along with followed action e.g. a options multi select represented as:
{
"#type": "ActionCard",
"name": "SelectResource",
"inputs": [
{
"#type": "MultichoiceInput",
"id": "<id_which_will_be_used_for_fetching_value>",
"isRequired": true,
"title": "Pick an option",
"style": "expanded",
"choices": $6
}
],
"actions": [
{
"#type": "HttpPOST",
"name": "Select one of the resource for booking",
"target": "your_azure_function_url",
"body": "{{<id_of_the_input>.value}}" //will be received in function
}
]
}
I've created a simple Lambda function to call a webpage, this works fine when I test it from the functions page however when trying to create a skill to call this function I end up with a "The remote endpoint could not be called, or the response it returned was invalid." error.
Lambda Function
var http = require('http');
exports.handler = function(event, context) {
console.log('start request to ' + event.url)
http.get(event.url, function(res) {
console.log("Got response: " + res.statusCode);
context.succeed();
}).on('error', function(e) {
console.log("Got error: " + e.message);
context.done(null, 'FAILURE');
});
console.log('end request to ' + event.url);
}
The Test Event code looks like this:
{
"url": "http://mywebsite.co.uk"
}
and I've added a trigger for the "Alexa Skills Kit".
The ARN for this function is showing as:
arn:aws:lambda:us-east-1:052516835015:function:CustomFunction
Alexa Skill (Developer Portal)
I've then created a skill with a simple Intent:
{
"intents": [
{
"intent": "CustomFunction"
}
]
}
and created an Utterance as:
CustomFunction execute my custom function
In the Configuration section for my skill I have selected the "AWS Lambda ARN (Amazon Resource Name)" option and entered the ARN into the box for North America.
In the Test -> Service Simulator section, I've added "execute my custom function" as the Text and this changes the Lambda Request to show:
{
"session": {
"sessionId": "SessionId.a3e8aee0-acae-4de5-85df-XXXXXXXXX",
"application": {
"applicationId": "amzn1.ask.skill.XXXXXXXXX"
},
"attributes": {},
"user": {
"userId": "amzn1.ask.account.XXXXXXXXX"
},
"new": true
},
"request": {
"type": "IntentRequest",
"requestId": "EdwRequestId.445267bd-2b4a-45ef-8566-XXXXXXXXX",
"locale": "en-GB",
"timestamp": "2016-11-27T22:54:07Z",
"intent": {
"name": "RunWOL",
"slots": {}
}
},
"version": "1.0"
}
but when I run the test I get the following error:
The remote endpoint could not be called, or the response it returned was invalid.
Does anyone have any ideas on why the skill can't connect to the function?
Thanks
The Service Simulator built into the Amazon Alexa Developer Console has known issues. Try copying the JSON generated by the Simulator and pasting it into your lambda function's test event. To access lambda's test events first find the blue 'Test' button. Next to that button select the (Actions Drop down menu) -> (Configure Test Event) -> Paste the provided JSON into the code area -> (Save and Test). Lambda's built in testing features are much more reliable than Alexa's.
If this does not solve the problem lambda's testing event returns a complete stackTrace and error codes. It becomes much easier to trouble shoot when every error isn't "The remote endpoint could not be called, or the response it returned was invalid."
{
"session": {
"sessionId": "SessionId.a3e8aee0-acae-4de5-85df-XXXXXXXXX",
"application": {
"applicationId": "amzn1.ask.skill.XXXXXXXXX"
},
"attributes": {},
"user": {
"userId": "amzn1.ask.account.XXXXXXXXX"
},
"new": true
},
"request": {
"type": "IntentRequest",
"requestId": "EdwRequestId.445267bd-2b4a-45ef-8566-XXXXXXXXX",
"locale": "en-GB",
"timestamp": "2016-11-27T22:54:07Z",
"intent": {
"name": "RunWOL",
"slots": {}
}
},
"version": "1.0"
}
​While uploading .zip, do not compress the folder into .zip.
Instead, go into the folder, select package.json, index.js and node modules & then compress them and then upload the .zip.
This error message is very broad and may imply a lot of different issues. I was getting this error and in my case it was a timeout issue. How long does that website you are pinging taking to respond? The timeout doesn't seem to be properly documented, see my original question here: Troubleshooting Amazon's Alexa Skill Kit (ASK) Lambda interaction