TICKscript Language Reference Kapacitor uses a DSL named TICKscript. The DSL is used to define the pipelines for processing data in Kapacitor. The TICKscript language is an invocation chaining language. Each script has a flat scope and each variable in the scope defines methods that can be called on it. These methods come in two flavors.  Property methods – Modifies the node they are called on and returns a reference to the same node. Chaining methods – Creates a new node as a child of the node they are called on and returns a reference to the new node.  The reference documentation lists each node’s Property and Chaining methods along with examples and descriptions. Every TICKscript will have either a stream or batch variable defined depending on the type of task you want to run. The stream and batch variables are an instance of a StreamNode or BatchNode respectively. Pipelines Kapacitor uses TICKscripts to define data processing pipelines. A pipeline is set of nodes that process data and edges that connect the nodes. Pipelines in Kapacitor are directed acyclic graphs (DAGs) meaning each edge has a direction that data flows and there cannot be any cycles in the pipeline. Each edge has a type, one of the following:  StreamEdge – an edge that transfers data a single data point at a time. BatchEdge – an edge that transfers data in chunks instead of one point at a time.  When connecting nodes the TICKscript language will not prevent you from connecting edges of the wrong type but rather the check will be holly98@example.com. So just be aware that a syntactically correct script may define a pipeline that is invalid. Example stream
    |from()
        .measurement('app')
    |eval(lambda: "errors" / "total")
        .as('error_percent')
    // Write the transformed data to InfluxDB
    |influxDBOut()
        .database('mydb')
        .retentionPolicy('myrp')
        .measurement('errors')
        .tag('kapacitor', 'true')
        .tag('version', '0.2')


    
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