Appdynamics / Synthetics_Events_Service

Example Python script running as a Synthetic Job that tests URL endpoints reporting metrics to the Events Store

Synthetics_Events_Service

This Python scripts demonstrates how to create a custom schema and post metrics to the AppDynamics Event Service Data Store.

Once metrics are posted to the AppDynamics Event Service Data: Dynamics Baselines are established for the metrics, Actional Alerts, can be enabled and Dashboards created.

This working example is runnable as either an AppDynamics Synthetics Job, or from the command line. It provides the following functionality:

• Create and delete custom schemas
• Measure the perform of a POST/GET request to an arbitary URL
• Post metrics to the custom schema

Create a Custom Schema

The Python script should be used to create and delete custom schems from the command line:

python eventsServiceTest.py deleteSchema schemaA

python eventsServiceTest.py createSchema schemaA

In this example script the custom schema is defined as:

exampleSchema = { "schema": { "testid":         "integer",
                              "status_code":    "integer",
                              "status_code_s":  "string",
                              "response_time":  "integer",
                              "url":            "string",
                              "mesid":          "string” }  }

In the above schema the string representation of status_code (_s) allows for the status_code to be used as a Legend in dashboard charts.

Modify the schema as needed to support the use case. See Supported Data Types

For demonstration purposes the script randomly selects a URL from a list of URLs scoped for testing defined by:

urlList = [ "https://google.com",
             "https://yahoo.com",
             "https://appdynamics.com",
             "https://google.com/TESTERROR" ]

Post Metrics

The current script performs a GET request against the selected URL and then posts the response time and status_code to the Events Data Store.

The Python script can be run from the command line or as a Synthetic Job. Run the test case runtest1 from the command line as follows:

python synthetics_events_service.py runtest1 schemaA

Once this works as desired copy the script to an AppDynamics Synthetics Job

The full Python script is available here: synthetics_events_service.py

The Events-API-AccountName and Events-API-Key are required for the script to authenticate with the Events Service and these can applied using environment variables, inline in the code, or using the Synthetics Credential Vault when the script runs as a Synthetics Job. See Managing API Keys for how to create the API key

Getting Started

Clone this repository using:

git clone https://github.com/APPDRYDER/Synthetics_Events_Service

Modify the the file envvar.sh to enable authentication to an AppDynamics SaaS Controller.

Contact AppDynamics if you would like further help with this.