The Logging query pipeline stage prints messages to the API log file; the default location is: https://FUSION_HOST:FUSION_PORT/var/log/api/api.log. The verbosity of this message is controlled by the property detailed. If true, then the current Request object will be pretty-printed to the log file. If false, only the basic information about this stage will be logged. In a production environment logging stages should be configured with property skip set to true, if possible. Use of detailed logging may impact performance.

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Query pipeline stage condition examples

Stages can be triggered conditionally when a script in the Condition field evaluates to true. Some examples are shown below. Run this stage only for mobile clients: 
params.deviceType === "mobile"
Run this stage when debugging is enabled: 
params.debug === "true"
Run this stage when the query includes a specific term: 
params.q && params.q.includes("sale")
Run this stage when multiple conditions are met: 
request.hasParam("fusion-user-name") && request.getFirstParam("fusion-user-name").equals("SuperUser");
!request.hasParam("isFusionPluginQuery")
The first condition checks that the request parameter “fusion-user-name” is present and has the value “SuperUser”. The second condition checks that the request parameter “isFusionPluginQuery” is not present.

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Configuration

When entering configuration values in the UI, use unescaped characters, such as \t for the tab character. When entering configuration values in the API, use escaped characters, such as \\t for the tab character.