Merge pull request #517 from sasjs/issue-506

fix: double parsing issue in sas9 when debug is enabled

src/FileUploader.ts

@@ -75,9 +75,7 @@ export class FileUploader {
             this.requestClient,
             this.sasjsConfig.serverUrl
           )
-          return typeof jsonResponse === 'string'
-            ? getValidJson(jsonResponse)
-            : jsonResponse
+          return jsonResponse
         }
 
         return typeof res.result === 'string'

src/job-execution/WebJobExecutor.ts

@@ -2,7 +2,8 @@ import { ServerType } from '@sasjs/utils/types'
 import {
   ErrorResponse,
   JobExecutionError,
-  LoginRequiredError
+  LoginRequiredError,
+  WeboutResponseError
 } from '../types/errors'
 import { generateFileUploadForm } from '../file/generateFileUploadForm'
 import { generateTableUploadForm } from '../file/generateTableUploadForm'
@@ -102,10 +103,10 @@ export class WebJobExecutor extends BaseJobExecutor {
 
     const requestPromise = new Promise((resolve, reject) => {
       this.requestClient!.post(apiUrl, formData, undefined)
-        .then(async (res) => {
+        .then(async (res: any) => {
           if (this.serverType === ServerType.SasViya && config.debug) {
             const jsonResponse = await parseSasViyaDebugResponse(
-              res.result as string,
+              res.result,
               this.requestClient,
               this.serverUrl
             )
@@ -113,18 +114,15 @@ export class WebJobExecutor extends BaseJobExecutor {
             resolve(jsonResponse)
           }
           if (this.serverType === ServerType.Sas9 && config.debug) {
-            const jsonResponse = parseWeboutResponse(res.result as string)
-            if (jsonResponse === '') {
-              throw new Error(
-                'Valid JSON could not be extracted from response.'
-              )
-            }
+            let jsonResponse = res.result
+            if (typeof res.result === 'string')
+              jsonResponse = parseWeboutResponse(res.result, apiUrl)
 
             getValidJson(jsonResponse)
             this.appendRequest(res, sasJob, config.debug)
             resolve(res.result)
           }
-          getValidJson(res.result as string)
+          getValidJson(res.result)
           this.appendRequest(res, sasJob, config.debug)
           resolve(res.result)
         })

src/request/RequestClient.ts

@@ -429,13 +429,7 @@ export class RequestClient implements HttpClient {
       }
     } catch {
       try {
-        const weboutResponse = parseWeboutResponse(response.data)
-        if (weboutResponse === '') {
-          throw new Error('Valid JSON could not be extracted from response.')
-        }
-
-        const jsonResponse = getValidJson(weboutResponse)
-        parsedResponse = jsonResponse
+        parsedResponse = JSON.parse(parseWeboutResponse(response.data))
       } catch {
         parsedResponse = response.data
       }

src/test/utils/getValidJson.spec.ts

@@ -1,4 +1,5 @@
 import { getValidJson } from '../../utils'
+import { JsonParseArrayError, InvalidJsonError } from '../../types/errors'
 
 describe('jsonValidator', () => {
   it('should not throw an error with a valid json', () => {
@@ -19,23 +20,17 @@ describe('jsonValidator', () => {
 
   it('should throw an error with an invalid json', () => {
     const json = `{\"test\":\"test\"\"test2\":\"test\"}`
-    let errorThrown = false
-    try {
+    const test = () => {
       getValidJson(json)
-    } catch (error) {
-      errorThrown = true
     }
-    expect(errorThrown).toBe(true)
+    expect(test).toThrowError(InvalidJsonError)
   })
 
   it('should throw an error when an array is passed', () => {
     const array = ['hello', 'world']
-    let errorThrown = false
-    try {
+    const test = () => {
       getValidJson(array)
-    } catch (error) {
-      errorThrown = true
     }
-    expect(errorThrown).toBe(true)
+    expect(test).toThrow(JsonParseArrayError)
   })
 })

src/types/errors/InvalidJsonError.ts

@@ -0,0 +1,7 @@
+export class InvalidJsonError extends Error {
+  constructor() {
+    super('Error: invalid Json string')
+    this.name = 'InvalidJsonError'
+    Object.setPrototypeOf(this, InvalidJsonError.prototype)
+  }
+}

src/types/errors/JsonParseArrayError.ts

@@ -0,0 +1,7 @@
+export class JsonParseArrayError extends Error {
+  constructor() {
+    super('Can not parse array object to json.')
+    this.name = 'JsonParseArrayError'
+    Object.setPrototypeOf(this, JsonParseArrayError.prototype)
+  }
+}

src/types/errors/WeboutResponseError.ts

@@ -0,0 +1,7 @@
+export class WeboutResponseError extends Error {
+  constructor(public url: string) {
+    super(`Error: error while parsing response from ${url}`)
+    this.name = 'WeboutResponseError'
+    Object.setPrototypeOf(this, WeboutResponseError.prototype)
+  }
+}

src/types/errors/index.ts

@@ -8,3 +8,6 @@ export * from './NotFoundError'
 export * from './ErrorResponse'
 export * from './NoSessionStateError'
 export * from './RootFolderNotFoundError'
+export * from './JsonParseArrayError'
+export * from './WeboutResponseError'
+export * from './InvalidJsonError'

src/utils/getValidJson.ts

@@ -1,16 +1,18 @@
+import { JsonParseArrayError, InvalidJsonError } from '../types/errors'
+
 /**
  * if string passed then parse the string to json else if throw error for all other types unless it is not a valid json object.
  * @param str - string to check.
  */
 export const getValidJson = (str: string | object) => {
   try {
-    if (Array.isArray(str)) {
-      throw new Error('Can not parse array object to json.')
-    }
+    if (Array.isArray(str)) throw new JsonParseArrayError()
+
     if (typeof str === 'object') return str
 
     return JSON.parse(str)
   } catch (e) {
-    throw new Error('Invalid JSON response.')
+    if (e instanceof JsonParseArrayError) throw e
+    throw new InvalidJsonError()
   }
 }

src/utils/parseViyaDebugResponse.ts

@@ -1,4 +1,5 @@
 import { RequestClient } from '../request/RequestClient'
+import { getValidJson } from '../utils'
 
 /**
  * When querying a Viya job using the Web approach (as opposed to using the APIs) with _DEBUG enabled,
@@ -25,5 +26,5 @@ export const parseSasViyaDebugResponse = async (
 
   return requestClient
     .get(serverUrl + jsonUrl, undefined)
-    .then((res) => res.result)
+    .then((res: any) => getValidJson(res.result))
 }

src/utils/parseWeboutResponse.ts

@@ -1,4 +1,6 @@
-export const parseWeboutResponse = (response: string) => {
+import { WeboutResponseError } from '../types/errors'
+
+export const parseWeboutResponse = (response: string, url?: string) => {
   let sasResponse = ''
 
   if (response.includes('>>weboutBEGIN<<')) {
@@ -7,6 +9,7 @@ export const parseWeboutResponse = (response: string) => {
         .split('>>weboutBEGIN<<')[1]
         .split('>>weboutEND<<')[0]
     } catch (e) {
+      if (url) throw new WeboutResponseError(url)
       sasResponse = ''
       console.error(e)
     }