Ocelot post request not going through - .net-core

Question

I have implemented Ocelot API gateway in my project which was working fine for 'GET' requests but when I tried to send 'POST' request I am getting the error:
previousRequestId: no previous request id, message: Error Code: UnableToFindDownstreamRouteError Message: Failed to match ReRoute configuration for upstream path: /api/patient/CreateAppointment, verb: POST. errors found in ResponderMiddleware. Setting error response for request path:/api/patient/CreateAppointment, request method: POST
Following is my ocelot.json:
{
"Routes": [
{
"DownstreamPathTemplate": "/api/patient/{everything}",
"DownstreamScheme": "http",
"DownstreamHostAndPorts": [
{
"Host": "patientservice",
"Port": 81
}
],
"UpstreamPathTemplate": "/api/patient/{everything}",
"UpstreamHttpMethod": [ "GET", "POST" ],
"UpstreamHost": "*"
},
{
"DownstreamPathTemplate": "/api/actor",
"DownstreamScheme": "http",
"DownstreamHostAndPorts": [
{
"Host": "postgresqldapper",
"Port": 5001
}
],
"UpstreamPathTemplate": "/api/actor",
"UpstreamHttpMethod": [ "GET" ]
},
{
"DownstreamPathTemplate": "/api/product/{everything}",
"DownstreamScheme": "http",
"DownstreamHostAndPorts": [
{
"Host": "productservice",
"Port": 80
}
],
"UpstreamPathTemplate": "/api/product/{everything}",
"UpstreamHttpMethod": [ "GET" ]
},
{
"DownstreamPathTemplate": "/api/weatherforecast",
"DownstreamScheme": "http",
"DownstreamHostAndPorts": [
{
"Host": "postgresqldapper",
"Port": 5001
}
],
"UpstreamPathTemplate": "/api/weatherforecast",
"UpstreamHttpMethod": [ "GET" ]
},
{
"DownstreamPathTemplate": "/api/user",
"DownstreamScheme": "http",
"DownstreamHostAndPorts": [
{
"Host": "loginservicedapr",
"Port": 80
}
],
"UpstreamPathTemplate": "/api/user",
"UpstreamHttpMethod": [ "GET" ]
},
{
"DownstreamPathTemplate": "/api/user/{everything}",
"DownstreamScheme": "http",
"DownstreamHostAndPorts": [
{
"Host": "loginservicedapr",
"Port": 5001
}
],
"UpstreamPathTemplate": "/api/user/{id}",
"UpstreamHttpMethod": [ "GET" ]
}
],
"GlobalConfiguration": {
"RequestIdKey": "OcRequestId",
"AdministrationPath": "/administration"
}
}
The API to which I am doing the 'POST' request is working fine for the 'POST' request when invoked directly from Swagger or Postman.
Please let me know what I should change in ocelot.json file so that the 'POST' request can through?

Answer 1

Your error is effectively saying that Ocelot is unable to route requests to
POST /api/patient/CreateAppointment
In your screenshot, your curl command (which is working) is a request to:
POST /api/patient
Your /{everything} path suffix is telling Ocelot that whatever suffix you call into the gateway with will be present on the downstream service.
My theory is that you have not defined a CreateAppointment endpoint operation on your downstream patient service API. Once you define this path on your service, your /api/patient/{everything} route mapping should work fine.