feat(debug): add viya debug log parser - parse JSON from inline blob

2026-07-24 15:12:15 +00:00 · 2026-05-13 14:09:47 +02:00
parent a691500910
commit 4cae9b5472
4 changed files with 69 additions and 5 deletions
@@ -15,6 +15,7 @@ export * from './parseGeneratedCode'
 export * from './parseSasViyaLog'
 export * from './parseSourceCode'
 export * from './parseViyaDebugResponse'
+export * from './parseViyaLogDebugResponse'
 export * from './parseWeboutResponse'
 export * from './serialize'
 export * from './splitChunks'
@@ -0,0 +1,18 @@
+import { getValidJson } from './getValidJson'
+
+/**
+ * When querying a Viya job using the Web approach with _DEBUG=log (used when
+ * runAsTask is true), the webout JSON is inlined into the response via:
+ *   var blob = new Blob([`{...}`], {type: 'application/json'});
+ * No follow-up request is needed — extract and parse the JSON directly.
+ */
+export const parseSasViyaLogDebugResponse = async (response: string) => {
+  const blobMatch = response.match(
+    /new Blob\(\[`([\s\S]*?)`\],\s*\{type:\s*'application\/json'\}\)/
+  )
+  if (!blobMatch) {
+    throw new Error('Unable to find webout blob in debug log response.')
+  }
+
+  return getValidJson(blobMatch[1])
+}
@@ -0,0 +1,41 @@
+import { parseSasViyaLogDebugResponse } from '../parseViyaLogDebugResponse'
+
+describe('parseSasViyaLogDebugResponse', () => {
+  it('should extract and parse JSON from inline Blob', async () => {
+    const resultData = { message: 'success' }
+    const response = `<html><body><script>
+var blob = new Blob([\`${JSON.stringify(resultData)}\`], {type: 'application/json'});
+</script></body></html>`
+
+    const result = await parseSasViyaLogDebugResponse(response)
+
+    expect(result).toEqual(resultData)
+  })
+
+  it('should extract and parse multiline JSON from inline Blob', async () => {
+    const resultData = {
+      SYSDATE: '13MAY26',
+      SYSCC: '0',
+      saslibs: [{ LIBRARYREF: 'FORMATS' }]
+    }
+    const response = `<script>
+var blob = new Blob([\`{"SYSDATE" : "13MAY26"
+,"SYSCC" : "0"
+,"saslibs": [{"LIBRARYREF":"FORMATS"}]
+}
+\`], {type: 'application/json'});
+</script>`
+
+    const result = await parseSasViyaLogDebugResponse(response)
+
+    expect(result).toEqual(resultData)
+  })
+
+  it('should throw an error if blob is not found', async () => {
+    const response = `<html><body>No blob here</body></html>`
+
+    await expect(parseSasViyaLogDebugResponse(response)).rejects.toThrow(
+      'Unable to find webout blob in debug log response.'
+    )
+  })
+})