Error invoking Swift hello world example

[htmsousa]

Hello,

I'm trying to run the Swift hello world example and I'm getting an error:

PS C:\Misc\coding\serverless\openwhisk-swift-simple-http-endpoint> serverless deploy
Serverless: Packaging service...
Serverless: Excluding development dependencies...
Serverless: Compiling Functions...
Serverless: Compiling Packages...
Serverless: Compiling API Gateway definitions...
Serverless: Compiling Rules...
Serverless: Compiling Triggers & Feeds...
Serverless: Compiling Service Bindings...
Serverless: Deploying Functions...
Serverless: Deploying API Gateway definitions...

  Serverless Error ---------------------------------------

  Failed to deploy API Gateway route due to error: POST https://localhost:31001/api/v1/web/whisk.system/apimgmt/createApi?accesstoken=no_token&spaceguid=23bc46b1-71f6-4ed5-8c54-816aa4f8c502 Returned HTTP 502 (Bad Gateway) --> "API creation failure: Unable to configure the API Gateway (status code 400): {"status":400,"message":"Error: Resource path must begin with '/'."}"

  Get Support --------------------------------------------
     Docs:          docs.serverless.com
     Bugs:          github.com/serverless/serverless/issues
     Issues:        forum.serverless.com

  Your Environment Information ---------------------------
     Operating System:          win32
     Node Version:              12.18.1
     Framework Version:         1.74.1 (standalone)
     Plugin Version:            3.6.14
     SDK Version:               2.3.1
     Components Version:        2.31.6

PS C:\Misc\coding\serverless\openwhisk-swift-simple-http-endpoint>

The error message {"status":400,"message":"Error: Resource path must begin with '/'."}" doesn't help much. I looked into the OpenWhisk logs and I could see the following log in Docker container k8s_user-action_wskowdev-invoker-00-5-prewarm-nodejs10_openwhisk_0a2a529c-34d8-4bac-b999-230ac72b627d_0. It looks like the request sent while doing serverless deploy.

Swagger JSON object: { basePath: '/',
info:
{ title: 'openwhisk-swift-simple-http-endpoint',
version: '1.0' },
paths: { ping: { get: [Object] } },
swagger: '2.0',
'x-ibm-configuration': { assembly: { execute: [Array] }, cors: { enabled: true } } }
GW URL : undefined
GW URL V2 : http://owdev-apigateway.openwhisk.svc.cluster.local:9000/v2
GW Auth : XXXXXXXXXX
__ow_user : guest
namespace : guest
tenantInstance: undefined / openwhisk
accesstoken : no_token
spaceguid : 23bc46b1-71f6-4ed5-8c54-816aa4f8c502
responsetype : undefined
API name : undefined
basepath : /
relpath : undefined
GW method : undefined
calledAsWebAction: true
apidoc :
{"namespace":"guest","swagger":{"basePath":"/","info":{"title":"openwhisk-swift-simple-http-endpoint","version":"1.0"},"paths":{"ping":{"get":{"operationId":"get-ping","responses":{"200":{"description":"A successful invocation response"}},"x-openwhisk":{"action":"openwhisk-swift-simple-http-endpoint-dev-ping","namespace":"guest","package":"default","url":"https://localhost:31001/api/v1/web/guest/default/openwhisk-swift-simple-http-endpoint-dev-ping.json"}}}},"swagger":"2.0","x-ibm-configuration":{"assembly":{"execute":[{"operation-switch":{"case":[{"execute":[{"set-variable":{"actions":[{"set":"message.headers.X-Require-Whisk-Auth","value":"c7884121763970f4effa21557f0de0bdf4579887e3f0a4638b6d897723642a85da87ca9bf1a3e363e9f3175493e9cff060a1a83a0fa985ba6d3b58f960dd580a"}]}},{"invoke":{"target-url":"https://localhost:31001/api/v1/web/guest/default/openwhisk-swift-simple-http-endpoint-dev-ping.json","verb":"keep"}}],"operations":["get-ping"]}]}}]},"cors":{"enabled":true}}}}
getApis: querying APIs based on basepath
getApis: request: {"followAllRedirects":true,"url":"http://owdev-apigateway.openwhisk.svc.cluster.local:9000/v2/23bc46b1-71f6-4ed5-8c54-816aa4f8c502/apis?limit=undefined&skip=undefined","headers":{"Accept":"application/json","User-Agent":"OpenWhisk-apimgmt/1.0.0 openwhisk-client-js openwhisk-client-js openwhisk-client-js openwhisk-client-js","Authorization":"Bearer no_token"},"json":true,"qs":{"basePath":"/"}}
getApis: response status: 200
getApis: response headers: {"server":"openresty/1.13.6.2","date":"Mon, 29 Jun 2020 21:57:32 GMT","content-type":"application/json; charset=utf-8","transfer-encoding":"chunked","connection":"close","x-request-id":"U8hg2LIxuR8bHep6bSVet9g8DKzmKgzl"}
getApis: body type = object
getApis: response JSON.stringify(body): []
Got 0 APIs
No API found for namespace guest with basePath /
Use provided swagger as the entire API; override any existing API
Validating Swagger doc before sending it to API GW.
validateFinalSwagger: Validating swapper before posting to API GW.
validateFinalSwagger: Validation of swagger before posting to API GW was successful.
Final swagger API config: {"basePath":"/","info":{"title":"openwhisk-swift-simple-http-endpoint","version":"1.0"},"paths":{"ping":{"get":{"operationId":"get-ping","responses":{"200":{"description":"A successful invocation response"}},"x-openwhisk":{"action":"openwhisk-swift-simple-http-endpoint-dev-ping","namespace":"guest","package":"default","url":"https://localhost:31001/api/v1/web/guest/default/openwhisk-swift-simple-http-endpoint-dev-ping.json"}}}},"swagger":"2.0","x-ibm-configuration":{"assembly":{"execute":[{"operation-switch":{"case":[{"execute":[{"set-variable":{"actions":[{"set":"message.headers.X-Require-Whisk-Auth","value":"c7884121763970f4effa21557f0de0bdf4579887e3f0a4638b6d897723642a85da87ca9bf1a3e363e9f3175493e9cff060a1a83a0fa985ba6d3b58f960dd580a"}]}},{"invoke":{"target-url":"https://localhost:31001/api/v1/web/guest/default/openwhisk-swift-simple-http-endpoint-dev-ping.json","verb":"keep"}}],"operations":["get-ping"]}]}}]},"cors":{"enabled":true}}}
addApiToGateway:
addApiToGateway: request: {
"followAllRedirects": true,
"url": "http://owdev-apigateway.openwhisk.svc.cluster.local:9000/v2/23bc46b1-71f6-4ed5-8c54-816aa4f8c502/apis",
"json": {
"basePath": "/",
"info": {
"title": "openwhisk-swift-simple-http-endpoint",
"version": "1.0"
},
"paths": {
"ping": {
"get": {
"operationId": "get-ping",
"responses": {
"200": {
"description": "A successful invocation response"
}
},
"x-openwhisk": {
"action": "openwhisk-swift-simple-http-endpoint-dev-ping",
"namespace": "guest",
"package": "default",
"url": "https://localhost:31001/api/v1/web/guest/default/openwhisk-swift-simple-http-endpoint-dev-ping.json"
}

}
}
},
"swagger": "2.0",
"x-ibm-configuration": {
"assembly": {
"execute": [
{
"operation-switch": {
"case": [
{
"execute": [
{
"set-variable": {
"actions": [
{
"set": "message.headers.X-Require-Whisk-Auth",
"value": "c7884121763970f4effa21557f0de0bdf4579887e3f0a4638b6d897723642a85da87ca9bf1a3e363e9f3175493e9cff060a1a83a0fa985ba6d3b58f960dd580a"
}
]
}
},
{
"invoke": {
"target-url": "https://localhost:31001/api/v1/web/guest/default/openwhisk-swift-simple-http-endpoint-dev-ping.json",
"verb": "keep"
}
}
],
"operations": [
"get-ping"
]
}
]
}
}

]
},
"cors": {
"enabled": true
}
}
},
"headers": {
"User-Agent": "OpenWhisk-apimgmt/1.0.0 openwhisk-client-js openwhisk-client-js openwhisk-client-js openwhisk-client-js",
"Authorization": "Bearer no_token"
}
}
addApiToGateway: response status:400
addApiToGateway: response headers: {"server":"openresty/1.13.6.2","date":"Mon, 29 Jun 2020 21:57:32 GMT","content-type":"application/json; charset=utf-8","transfer-encoding":"chunked","connection":"close"}
addApiToGateway: response body: {"status":400,"message":"Error: Resource path must begin with '/'."}
makeJsonString: String is not JSON, so need to convert it: SyntaxError: Unexpected token U in JSON at position 0
API creation failure: Unable to configure the API Gateway (status code 400): {"status":400,"message":"Error: Resource path must begin with '/'."}
makeErrorResponseObject: isWebAction: true
makeJsonString: String is not JSON, so need to convert it: SyntaxError: Unexpected token A in JSON at position 0
XXX_THE_END_OF_A_WHISK_ACTIVATION_XXX
XXX_THE_END_OF_A_WHISK_ACTIVATION_XXX

If you look closely there are 2 invalid characters . Copying and pasting the log in notepad++ it is possible to see what is that invalid char:

Doing a quick search on Google we can see that SOH is the Ctrl ^A. Could that be the reason for the error Unexpected token A in JSON at position 0? Why is it there? Any idea @jthomas ?

Ctrl |ASCII |Dec |Hex | Meaning
^@   |NUL   |000 |00  | Null character
^A   |SOH   |001 |01  | Start of Header

Execution environment:

• Windows 10 Pro
• Docker Desktop for Windows using WSL 2 based engine with Kubernetes
• Whisk API:

{"api_version":"1.0.0","api_version_path":"v1","build":"2020-06-17-15:21:13Z","buildno":"20200617a","description":"OpenWhisk API","swagger_paths":{"api-docs":"/api-docs","ui":"/docs"}}
whisk API build         2020-06-17-15:21:13Z
whisk API build number  20200617a

[htmsousa]

Also tested the Node example (https://github.com/serverless/examples/tree/master/openwhisk-node-simple-http-endpoint) just to make sure it wasn't related with Swift and same thing happens.