Question
msg systems
DE
Last activity: 31 May 2016 11:09 EDT
JSONStream.parseJSONStream(String) throw an error, but jsonString has the correct Format
In our application we have a own Functionrule. This Function worked on Pega 6.3 without error,
but in Pega 7.1.7 it throws an error in the trace.
In this Functionrule we have the following Java-Code:
//**********BEGIN*****************************************************************************************
PublicAPI tools = ThreadContainer.get().getPublicAPI();
ClipboardPage resultPage = tools.createPage("AzD-Int-EncryptionFW-Result", "encryptionResultPage");
ClipboardPage configPage;
ClipboardPage decryptedDataPage;
Cipher cipher;
MessageDigest messageDigest;
try {
//-- Is the property encrypted by this?
try {
String jsonString = Base64Util.decode(property);
resultPage.putString("Message", jsonString);
decryptedDataPage = tools.createPage("AzD-Int-EncryptionFW", "decryptedDataPage");
//the next line cause very probably the error
decryptedDataPage.adoptJSONObject(jsonString);
//.... further Code, but not important for this request
//******************************************************************************************************
When the function is executed, it throws the following ErrorCode in the trace:
In our application we have a own Functionrule. This Function worked on Pega 6.3 without error,
but in Pega 7.1.7 it throws an error in the trace.
In this Functionrule we have the following Java-Code:
//**********BEGIN*****************************************************************************************
PublicAPI tools = ThreadContainer.get().getPublicAPI();
ClipboardPage resultPage = tools.createPage("AzD-Int-EncryptionFW-Result", "encryptionResultPage");
ClipboardPage configPage;
ClipboardPage decryptedDataPage;
Cipher cipher;
MessageDigest messageDigest;
try {
//-- Is the property encrypted by this?
try {
String jsonString = Base64Util.decode(property);
resultPage.putString("Message", jsonString);
decryptedDataPage = tools.createPage("AzD-Int-EncryptionFW", "decryptedDataPage");
//the next line cause very probably the error
decryptedDataPage.adoptJSONObject(jsonString);
//.... further Code, but not important for this request
//******************************************************************************************************
When the function is executed, it throws the following ErrorCode in the trace:
Invalid clipboard stream detected in module
com.pega.pegarules.data.internal.clipboard.JSONStream.parseJSONStream(String).
Reason: JSON text must start with '{' or '[' at 0 [character 1 line 1]
The function call the Method adoptJSONObject(jsonString). The value of the jsonString is in this case:
{ "AzDIntEncryptionFWEncryptedData":"Duo2EZA5o8iEJobDMMZFaOlE6LCyyasza+j+MVRP2cY=" ,
"AzDIntEncryptionFWEncryptionTimeStamp":"20160525T093142.110 GMT" ,
"AzDIntEncryptionFWMD5Checksum":"q/DI0a9pPJ1k2qvc3lQ5zQ==" ,
"pxObjClass":"AzD-Int-EncryptionFW" }
The jsonString begin with a "{" but the errormessage told the sign "{" is missing.
I believe the method adoptJSONObject cause the error and has maybe an mistake.
Can you help us, that we get no error more in the trace?
Accepted Solution
Updated: 25 May 2016 11:29 EDT
Pegasystems Inc.
US
Hi Annemarie,
I had tried the below code with your JSON string in an activity Java Step as shown below,
Java Code:
PublicAPI tools = ThreadContainer.get().getPublicAPI();
ClipboardPage decryptedDataPage;
String input = "{\"AzDIntEncryptionFWEncryptedData\": \"Duo2EZA5o8iEJobDMMZFaOlE6LCyyasza+j+MVRP2cY=\",\"AzDIntEncryptionFWEncryptionTimeStamp\": \"20160525T093142.110 GMT\",\"AzDIntEncryptionFWMD5Checksum\": \"q/DI0a9pPJ1k2qvc3lQ5zQ==\",\"pxObjClass\": \"AzD-Int-EncryptionFW\"}";
oLog.infoForced("Input string: " + input2);
try{
decryptedDataPage = tools.createPage("Gcsm-MaheshApp-Work-CodeTest", "decryptedDataPage");
decryptedDataPage.adoptJSONObject(input);
oLog.infoForced("Code ran successfully");
}
catch(InvalidStreamError e){
oLog.infoForced("Error string: " + e);
}
But my activity ran successfully and I can see the Pega Rules log file with following output,
Log Message:
Hi Annemarie,
I had tried the below code with your JSON string in an activity Java Step as shown below,
Java Code:
PublicAPI tools = ThreadContainer.get().getPublicAPI();
ClipboardPage decryptedDataPage;
String input = "{\"AzDIntEncryptionFWEncryptedData\": \"Duo2EZA5o8iEJobDMMZFaOlE6LCyyasza+j+MVRP2cY=\",\"AzDIntEncryptionFWEncryptionTimeStamp\": \"20160525T093142.110 GMT\",\"AzDIntEncryptionFWMD5Checksum\": \"q/DI0a9pPJ1k2qvc3lQ5zQ==\",\"pxObjClass\": \"AzD-Int-EncryptionFW\"}";
oLog.infoForced("Input string: " + input2);
try{
decryptedDataPage = tools.createPage("Gcsm-MaheshApp-Work-CodeTest", "decryptedDataPage");
decryptedDataPage.adoptJSONObject(input);
oLog.infoForced("Code ran successfully");
}
catch(InvalidStreamError e){
oLog.infoForced("Error string: " + e);
}
But my activity ran successfully and I can see the Pega Rules log file with following output,
Log Message:
Admin@gcsm - Input string: {"AzDIntEncryptionFWEncryptedData": "Duo2EZA5o8iEJobDMMZFaOlE6LCyyasza+j+MVRP2cY=","AzDIntEncryptionFWEncryptionTimeStamp": "20160525T093142.110 GMT","AzDIntEncryptionFWMD5Checksum": "q/DI0a9pPJ1k2qvc3lQ5zQ==","pxObjClass": "AzD-Int-EncryptionFW"}
2016-05-25 10:32:41,801 [http-apr-7350-exec-2] [ STANDARD] [ ] [ MaheshApp:01.01.01] (MaheshApp_Work_CodeTest.Action) INFO Admin@gcsm - Code ran successfully
So I would like you to try the same use case at your end and share the results.
Code Analysis:
- I had a look at the code changes for Pega v6.3 and Pega v7.1.7
- In v6.3 we are not handling the JSONArray and we are directly creating the JSONObject from the input string.
- But in v7.1.7 we added a new cross check functionality of the input string 1st character to make sure whether it is { or [ and then we are constructing JSONObject or JSONArray accordingly.
- If the Json string doesn’t start with { or [ then it will throw the below error as per the code implementation.
Kindly share your results after testing my code at your end. If we can't find any further pointers then I would suggest you to create a new SR for this as it needs more in detail analysis and debugging to find the root cause at your end as issue is not reproducible at in house.
Let me know if this information helped you.
Regards,
Mahesh
msg systems
DE
Hi Mahesh,
thank you for the help. The information links me to the problem.
I see that sometimes the adoptJSONObject function have an input parameter that is empty or an decoded parameter.
We must check for this and call the fuction only with encoded values.
regards
Annemarie