I'm using Apache Drill with http storage.
For one particular entry, it cannot parse the JSON that is coming back.
> DATA_READ_ERROR: Error parsing JSON- Unexpected character('<' (code
> 60)): expected a valid value (JSON String, Number (or
> 'NAN`/'INF'/'+INF'), Array, Object or token 'null', 'true', or
> 'false') at [Source: (okio.RealBufferedSource$inputStream$1); line:
> 1, column: 2]
I've double checked the url it is hitting and it is returning back application/json as the content type, so I have no idea why it's not parsing this particular API connection.
This is also the only API connection that doesn't work. The others I have set up work properly.
The API setting
> "prometheus": { "url": "http://.../api/v1/query", "requireTail":
> true, "method": "GET", "dataPath": "data", "authType": "none",
> "inputType": "json", "xmlDataLevel": 1, "verifySSLCert": true, }
Related
I am trying to parse a json payload sent via a POST request to a NGINX/Openresty location. To do so, I combined Openresty's content_by_lua_block with its cjson module like this:
# other locations above
location /test {
content_by_lua_block {
ngx.req.read_body()
local data_string = ngx.req.get_body_data()
local cjson = require "cjson.safe"
local json = cjson.decode(data_string)
local endpoint_name = json['endpoint']['name']
local payload = json['payload']
local source_address = json['source_address']
local submit_date = json['submit_date']
ngx.say('Parsed')
}
}
Parsing sample data containing all required fields works as expected. A correct JSON object could look like this:
{
"payload": "the payload here",
"submit_date": "2018-08-17 16:31:51",
},
"endpoint": {
"name": "name of the endpoint here"
},
"source_address": "source address here",
}
However, a user might POST a differently formatted JSON object to the location. Assume a simple JSON document like
{
"username": "JohnDoe",
"password": "password123"
}
not containing the desired fields/keys.
According to the cjson module docs, using cjson (without its safe mode) will raise an error if invalid data is encountered. To prevent any errors being raised, I decided to use its safe mode by importing cjson.safe. This should return nil for invalid data and provide the error message instead of raising the error:
The cjson module will throw an error during JSON conversion if any invalid data is encountered. [...]
The cjson.safe module behaves identically to the cjson module, except when errors are encountered during JSON conversion. On error, the cjson_safe.encode and cjson_safe.decode functions will return nil followed by the error message.
However, I do not encounter any different error handling behavior in my case and the following traceback is shown in Openresty's error.log file:
2021/04/30 20:33:16 [error] 6176#6176: *176 lua entry thread aborted: runtime error: content_by_lua(samplesite:50):16: attempt to index field 'endpoint' (a nil value)
Which in turn results in an Internal Server Error:
<html>
<head><title>500 Internal Server Error</title></head>
<body>
<center><h1>500 Internal Server Error</h1></center>
<hr><center>openresty</center>
</body>
</html>
I think a workaround might be writing a dedicated function for parsing the JSON data and calling it with pcall() to catch any errors. However, this would make the safe mode kind of useless. What am I missing here?
Your “simple JSON document” is a valid JSON document. The error you are facing is not related to cjson, it's a standard Lua error:
resty -e 'local t = {foo = 1}; print(t["foo"]); print(t["foo"]["bar"])'
1
ERROR: (command line -e):1: attempt to index field 'foo' (a number value)
stack traceback:
...
“Safeness” of cjson.safe is about parsing of malformed documents:
cjson module raises an error:
resty -e 'print(require("cjson").decode("[1, 2, 3"))'
ERROR: (command line -e):1: Expected comma or array end but found T_END at character 9
stack traceback:
...
cjson.safe returns nil and an error message:
resty -e 'print(require("cjson.safe").decode("[1, 2, 3"))'
nilExpected comma or array end but found T_END at character 9
I'm using the Robot Framework API automation. Here, storing the JSON response in a variable [POSTResp.content]. I.e., "POSTResp.content" has the whole response, as given below. Please help me to get an attribute's value (for ex, value of referenceId) from the stored content.
Example of JSON response:
{
"serviceResponseHeader": {
"responseContext": {
"responseCode": "MS19",
"responseDescription": "Success",
"serviceResponseTimeInGMT": "18 Sep 2018 16:12:43 GMT"
},
"requesterContext": {
"applicationCode": null,
"applicationSubCode": null,
"countryCode": null,
"requesterReferenceNumber": null,
"requestTimeInGMT": "30 Jun 2015 11:54:49 GMT",
"requesterUserIdentity": "23483",
"requesterGroupIdentity": "1620",
"requesterIpAddress": "",
"sessionIdentity": "2536kjhfdashfkhfsab",
"ssoSessionIdentity": "2536kjhfdashfkhfsab",
"requesterAbbreviatedGroupName": "NEWCOMP"
},
"serviceContext": {
"serviceVersionNumber": "1.0",
"serviceCode": "30"
}
},
"getProxyDetailResponseBody": {
"proxyDetails": {
"proxyType": "",
"proxyValue": "20140005K",
"referenceId": "PR18090000847597",
"transactionId": "18091801657466"
}
}
}
I've tried the below ways,
1) ${json} To JSON ${POSTResp.content} true
log to console \n the Proxy ID is ${json["proxyValue"]}
Result: Resolving variable '${json["proxyValue"]}' failed: TypeError: string indices must be integers, not str
2) ${json} Evaluate json.loads(${POSTResp.content}} json
log to console \n the Proxy ID is ${json["proxyValue"]}
Result: failed: SyntaxError: unexpected EOF while parsing (, line 1)
Issues with your two approaches:
1) the library keyword call passes a true argument (well, truth-like) to the pretty_print parameter:
${json} To JSON ${POSTResp.content} true
Looking at the library's source, in that case the keyword does not return a dict object - but a string, a beatified version of the source json. That coincides with the error your received.
Remove the "true" argument and it must return a dict.
2) In the Evaluate surround the variable with triple quotes (python's literal string):
${json} Evaluate json.loads('''${POSTResp.content}'''}
json
Without it, the framework just dumped the variable's value, which raised a python syntax error.
By the way, try not to make your variables with language keywords/library names - like ${json} up there.
I am getting an error while using a dataweave transformation on a JSON Payload. The JSON Payload is
{
"requestId": "13431#1638a2abfb8",
"result": [
{
"batchId": 1028,
"importId": "1028",
"status": "Queued"
}
],
"success": true
}
The above payload is returned by a RESTful service and I have converted that to a object using byteArray to Object transformer before applying the following dataweave transformation
%dw 1.0
%output application/json
---
batchexecution:
{
batchid:payload.result[0].batchid,
status: payload.result[0].status,
success:payload.success
} when ((payload.result != null) and (sizeOf payload.result > 0))
otherwise
{
batchid: 0,
status:"Not queued",
success:false
}
I am expecting only one record for the result object and I have a check to see whether the array is null or its size is >0. I get the following error when I execute the transformation code. Not sure what is wrong here.
I am expecting the following output for the transformation but I am getting the error while executing the transformation code
{
"batchexecution": {
"batchId": 1028,
"status": "Queued",
"success": true
}
}
But I am getting the following error as You cannot compare a value of type ::array.
Message : Exception while executing:
{"requestId":"64b3#1638e55058c","result":[{"batchId":1037,"importId":"1037","status":"Queued"}],"success":true}
^
You cannot compare a value of type ::array.
Payload : {"requestId":"64b3#1638e55058c","result":[{"batchId":1037,"importId":"1037","status":"Queued"}],"success":true}
Payload Type : java.lang.String
Element : /marketing-dbmkt-etl-marketoFlow/processors/8 # marketing-dbmkt-etl-marketo:marketing-dbmkt-etl-marketo.xml:69 (Transform Message)
Element XML : <dw:transform-message doc:name="Transform Message" metadata:id="90448cfd-5884-441a-a989-e32e4877ac24">
<dw:input-payload mimeType="application/json" doc:sample="sample_data\batchreturnObject.dwl"></dw:input-payload>
<dw:set-payload>%dw 1.0%output application/json---batchexecution:{batchid:payload.result[0].batchid,status: payload.result[0].status,success:payload.success} when ((payload.result != null) and (sizeOf payload.result > 0))otherwise{batchid: 0,status:"Not queued",success:false}</dw:set-payload>
</dw:transform-message>
--------------------------------------------------------------------------------
Root Exception stack trace:
com.mulesoft.weave.mule.exception.WeaveExecutionException: Exception while executing:
{"requestId":"64b3#1638e55058c","result":[{"batchId":1037,"importId":"1037","status":"Queued"}],"success":true}
^
You cannot compare a value of type ::array.
at com.mulesoft.weave.mule.exception.WeaveExecutionException$.apply(WeaveExecutionException.scala:10)
at com.mulesoft.weave.mule.WeaveMessageProcessor.execute(WeaveMessageProcessor.scala:121)
at com.mulesoft.weave.mule.WeaveMessageProcessor.process(WeaveMessageProcessor.scala:67)
at org.mule.execution.ExceptionToMessagingExceptionExecutionInterceptor.execute(ExceptionToMessagingExceptionExecutionInterceptor.java:27)
at org.mule.execution.MessageProcessorNotificationExecutionInterceptor.execute(MessageProcessorNotificationExecutionInterceptor.java:108)
at org.mule.execution.MessageProcessorExecutionTemplate.execute(MessageProcessorExecutionTemplate.java:44)
at org.mule.processor.BlockingProcessorExecutor.executeNext(BlockingProcessorExecutor.java:88)
at org.mule.processor.BlockingProcessorExecutor.execute(BlockingProcessorExecutor.java:59)
at org.mule.execution.ExceptionToMessagingExceptionExecutionInterceptor.execute(ExceptionToMessagingExceptionExecutionInterceptor.java:27)
at org.mule.execution.MessageProcessorExecutionTemplate.execute(MessageProcessorExecutionTemplate.java:44)
at org.mule.processor.BlockingProcessorExecutor.executeNext(BlockingProcessorExecutor.java:98)
at org.mule.processor.BlockingProcessorExecutor.execute(BlockingProcessorExecutor.java:59)
at org.mule.interceptor.AbstractEnvelopeInterceptor.processBlocking(AbstractEnvelopeInterceptor.java:58)
at org.mule.processor.AbstractRequestResponseMessageProcessor.process(AbstractRequestResponseMessageProcessor.java:47)
at org.mule.processor.AsyncInterceptingMessageProcessor.processNextTimed(AsyncInterceptingMessageProcessor.java:129)
at org.mule.processor.AsyncInterceptingMessageProcessor$AsyncMessageProcessorWorker$1.process(AsyncInterceptingMessageProcessor.java:213)
at org.mule.processor.AsyncInterceptingMessageProcessor$AsyncMessageProcessorWorker$1.process(AsyncInterceptingMessageProcessor.java:206)
at org.mule.execution.ExecuteCallbackInterceptor.execute(ExecuteCallbackInterceptor.java:16)
at org.mule.execution.CommitTransactionInterceptor.execute(CommitTransactionInterceptor.java:35)
at org.mule.execution.CommitTransactionInterceptor.execute(CommitTransactionInterceptor.java:22)
at org.mule.execution.HandleExceptionInterceptor.execute(HandleExceptionInterceptor.java:30)
at org.mule.execution.HandleExceptionInterceptor.execute(HandleExceptionInterceptor.java:14)
at org.mule.execution.BeginAndResolveTransactionInterceptor.execute(BeginAndResolveTransactionInterceptor.java:67)
at org.mule.execution.ResolvePreviousTransactionInterceptor.execute(ResolvePreviousTransactionInterceptor.java:44)
at org.mule.execution.SuspendXaTransactionInterceptor.execute(SuspendXaTransactionInterceptor.java:50)
at org.mule.execution.ValidateTransactionalStateInterceptor.execute(ValidateTransactionalStateInterceptor.java:40)
at org.mule.execution.IsolateCurrentTransactionInterceptor.execute(IsolateCurrentTransactionInterceptor.java:41)
at org.mule.execution.ExternalTransactionInterceptor.execute(ExternalTransactionInterceptor.java:48)
at org.mule.execution.RethrowExceptionInterceptor.execute(RethrowExceptionInterceptor.java:28)
at org.mule.execution.RethrowExceptionInterceptor.execute(RethrowExceptionInterceptor.java:13)
at org.mule.execution.TransactionalErrorHandlingExecutionTemplate.execute(TransactionalErrorHandlingExecutionTemplate.java:110)
at org.mule.execution.TransactionalErrorHandlingExecutionTemplate.execute(TransactionalErrorHandlingExecutionTemplate.java:30)
at org.mule.processor.AsyncInterceptingMessageProcessor$AsyncMessageProcessorWorker.doRun(AsyncInterceptingMessageProcessor.java:205)
at org.mule.work.AbstractMuleEventWork.run(AbstractMuleEventWork.java:53)
at org.mule.work.WorkerContext.run(WorkerContext.java:301)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:748)
********************************************************************************
The problem here is not obvious, but I have come across the same issue before - it's related to the sizeOf function and the poor way that Mule applies precedence to some of it's operators. When you say (sizeOf payload.result > 0) it's first trying to attempt to resolve the payload.result > 0 expression - hence the error you're seeing (it's trying to compare an array to 0).
Please use ((sizeOf payload.result) > 0) instead (I always make a point of wrapping sizeOf in parentheses for this reason).
As a side note, you have batchid:payload.result[0].batchid - it should be batchId:payload.result[0].batchId (capitalisation in batchId)
whenever you are using any function like sizeOf in dataweave try to encapsulate it with round braces to avoid these kinds of errors.
#ghoshyTech in your case
when ((payload.result != null) and ((sizeOf payload.result) > 0))
I am trying to integrate Spring Rest docs with Grails 3.2.9 application, using Rest Assured. During integration testing it is producing the Payload Handling Exception.
Full stack trace:
org.springframework.restdocs.payload.PayloadHandlingException: com.fasterxml.jackson.core.JsonParseException: Unexpected character ('<' (code 60)): expected a valid value (number, String, array, object, 'true', 'false' or 'null')
at [Source: [B#793cd42d; line: 1, column: 2]
at org.springframework.restdocs.payload.JsonContentHandler.readContent(JsonContentHandler.java:84)
at org.springframework.restdocs.payload.JsonContentHandler.findMissingFields(JsonContentHandler.java:50)
at org.springframework.restdocs.payload.AbstractFieldsSnippet.validateFieldDocumentation(AbstractFieldsSnippet.java:113)
at org.springframework.restdocs.payload.AbstractFieldsSnippet.createModel(AbstractFieldsSnippet.java:74)
at org.springframework.restdocs.snippet.TemplatedSnippet.document(TemplatedSnippet.java:64)
at org.springframework.restdocs.generate.RestDocumentationGenerator.handle(RestDocumentationGenerator.java:192)
at org.springframework.restdocs.restassured.RestDocumentationFilter.filter(RestDocumentationFilter.java:63)
at com.jayway.restassured.internal.filter.FilterContextImpl.next(FilterContextImpl.groovy:73)
at org.springframework.restdocs.restassured.RestAssuredRestDocumentationConfigurer.filter(RestAssuredRestDocumentationConfigurer.java:65)
at com.jayway.restassured.internal.filter.FilterContextImpl.next(FilterContextImpl.groovy:73)
at com.jayway.restassured.internal.RequestSpecificationImpl.applyPathParamsAndSendRequest(RequestSpecificationImpl.groovy:1574)
at com.jayway.restassured.internal.RequestSpecificationImpl.get(RequestSpecificationImpl.groovy:159)
at so.con.BaseRestDocTestSetup.$tt__createDoc(BaseRestDocTestSetup.groovy:130)
at so.con.BaseRestDocTestSetup.createDoc_closure4(BaseRestDocTestSetup.groovy)
at groovy.lang.Closure.call(Closure.java:414)
at groovy.lang.Closure.call(Closure.java:430)
at grails.transaction.GrailsTransactionTemplate$1.doInTransaction(GrailsTransactionTemplate.groovy:70)
at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:133)
at grails.transaction.GrailsTransactionTemplate.executeAndRollback(GrailsTransactionTemplate.groovy:67)
at so.con.v1.docs.ConfApiDocSpec.test and document get request for /conf getting conf-list as Response(ConfApiDocSpec.groovy:63)
Caused by: com.fasterxml.jackson.core.JsonParseException: Unexpected character ('<' (code 60)): expected a valid value (number, String, array, object, 'true', 'false' or 'null')
at [Source: [B#793cd42d; line: 1, column: 2]
at com.fasterxml.jackson.core.JsonParser._constructError(JsonParser.java:1702)
at com.fasterxml.jackson.core.base.ParserMinimalBase._reportError(ParserMinimalBase.java:558)
at com.fasterxml.jackson.core.base.ParserMinimalBase._reportUnexpectedChar(ParserMinimalBase.java:456)
at com.fasterxml.jackson.core.json.UTF8StreamJsonParser._handleUnexpectedValue(UTF8StreamJsonParser.java:2689)
at com.fasterxml.jackson.core.json.UTF8StreamJsonParser._nextTokenNotInObject(UTF8StreamJsonParser.java:878)
at com.fasterxml.jackson.core.json.UTF8StreamJsonParser.nextToken(UTF8StreamJsonParser.java:772)
at com.fasterxml.jackson.databind.ObjectMapper._initForReading(ObjectMapper.java:3834)
at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:3783)
at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:2929)
at org.springframework.restdocs.payload.JsonContentHandler.readContent(JsonContentHandler.java:81)
... 19 more
Please help me resolve this.
You are trying to parse XML with JSON decoder. Use Accept-Encoding header for you request and provide expected format there.
I am using Anypoint Studio 6.1 and Mule 3.8.1 and have the following JSON response from a Mule workflow:
{
"Description": "Top 10 games:
- Mario Kart
- Legend of Zelda"
}
This fails validation with the following error:
Error: Parse error on line 2:
{ "Description": "Top 10 games: - M
-----------------^
Expecting 'STRING', 'NUMBER', 'NULL', 'TRUE', 'FALSE', '{', '[', got 'undefined'
I have tried escaping the special characters put it still does not work. How can I change the response to pass JSON v4 validation. The JSON validator I have been using is http://jsonlint.com/
Thanks
The root cause of the issue is carriage return in the JSON response. The valid JSON should be as below
{
"Description": "Top 10 games:\r\n- Mario Kart\r\n- Legend of Zelda"
}
Please provide more details on where you are receiving this description. is it from XML or any other source. Also it will be helpful if you post your DWL code as well.