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You can configure the API Manager to track runtime statistics of API invocations through Google Analytics (http://www.google.com/analytics). Google Analytics is a service that allows you to track visits to a website and generate detailed statistics on them.

This guide explains how to setup API Manager in order to feed runtime statistics to Google analytics for summarization and display.

  1. Setup a Google Analytics account if not subscribed already and receive a Tracking ID, which is of the format "UA-XXXXXXXX-X". A Tracking ID is issued at the time an account is created with Google Analytics.

  2. Log in to the API Manager management console (https://localhost:9443/carbon) using admin/admin credentials and go to Main -> Resources -> Browse menu.

    Tip

    If you are using a distributed/clustered API Manager setup, configure this in the API Gateway node(s).

  3. Navigate to the /_system/governance/apimgt/statistics/ga-config.xml file.

  4. Change the <Enabled> element to true, set your tracking ID in <TrackingID> element and Save.

  5. If you want to enable tracking for tenants, log in to the management console with a tenant's credentials, click Source View, and then add the following parameter to the org.wso2.carbon.mediation.registry.WSO2Registry registry definition near the top (repeat this step for each tenant):
    <parameter name="cachableDuration">15000</parameter>

    The following screen shot illustrates this change:
    Screen shot of service bus source view with registry configuration highlighted
  6. API Manager is now integrated with Google Analytics. A user who has subscribed to a published API through the API Store should see an icon as Real-Time after logging into their Google Analytics account. Click on this icon and select Overview.
  7. Invoke the above API using the embedded WSO2 REST Client (or any third-part rest client such as cURL).

    Real-time statistics

  8. This is one invocation of the API. Accordingly, Google Analytics graphs and statistics will be displayed at runtime. This example displays the PageViews per second graph and 1 user as active.

    Report statistics

    Google analytics reporting statistics take more than 24 hours from the time of invocation to populate. Shown below is a sample Dashboard with populated statistics.

    There are widgets with statistics related to Audience, Traffic, Page Content, Visit Duration etc. You can add any widget of your preference to dashboard.