Introscope agent fails to load the basnippet file on z/OS

Products

• CA Application Performance Management Agent (APM / Wily / Introscope)
• CA Application Performance Management (APM / Wily / Introscope)
• INTROSCOPE
• DX Application Performance Management

Issue/Introduction

We are trying to configure the browser agent to see metrics via AXA.  The agent we are using for the AXA test is a WAS z/OS agent with 10.7 SP3 agent version, using the NoRedef agent jar and profile.  We are getting the following error messages:

[ERROR] [IntroscopeAgent.BrowserAgent] /products/wily/V1073/PU/wily/core/ext/../config/iSSNRC.basnippet, this snippet file is empty or not readable.

[WARN] [IntroscopeAgent.BrowserAgent] Value for the property introscope.agent.browseragent.autoInjection.iSSNRC.snippetLocation is not provided or invalid

[WARN] [IntroscopeAgent.Agent] Cannot load permanent dynamic instrumentation

We verified that /products/wily/V1073/PU/wily/core/config/iSSNRC.basnippet is readable, and is a valid file.  We observed the javascript code inside the basnippet file is broken up over multiple lines, instead of on a single line.

Environment

Release : 10.7 SP3

Component : APM Agents

Resolution

To change snippetLocation and includeURLsRegex properties without having to reload the app, then change the appID property too:
introscope.agent.browseragent.autoInjection.appID=iSSNRC
introscope.agent.browseragent.autoInjection.iSSNRC.snippetLocation=../config/iSSNRC.basnippet
introscope.agent.browseragent.autoInjection.iSSNRC.includeURLsRegex=.*action.*

Becomes:
introscope.agent.browseragent.autoInjection.appID=iSSNRC1
introscope.agent.browseragent.autoInjection.iSSNRC1.snippetLocation=../config/iSSNRC.basnippet
introscope.agent.browseragent.autoInjection.iSSNRC1.includeURLsRegex=.*action.*


Just change the appID to something else and the properties will be reloaded. Presales engineers typically switch between 0 and 1.