Input Processors

the analytics module makes use of built in input processors to retrieve data from a topic, database, or generator the following describes the input processors that are currently available database batch input processors database batch input overview generate events by periodically polling specified db measurements filtering you could add filtering for queries list of fields depends on database and measurement, but for device data, standard filters are datatype, device id, is device status, register id, success, tag, topic, value examples filter by tag "tag" = 'tag1' filter by tag and success "tag" = 'tag1' and "success" = 1 database batch input parameters parameters details database select the name of the database from which data will be retrieved filter specify the sql filter for the where part of the query to filter the data from the database metric name name of the metric for timeseriesdb polling period secs set the polling interval in seconds for retrieving data from the database typed define the data typed policy for processing the retrieved data datahub subscribe processors datahub subscribe overview generate events from specified datahub topic and attach to output note when using the datahub subscribe processor, number values in your json payload are parsed as float datatype if you're working with processors like switch docid\ ifezzlax1g2rsdjncjstz , change docid\ vtr272ie jam2gcxxlod , javascript processor docid\ mdjr17s8nmtmi2jh90sm1 , or tengo script docid 2agbvhjutmfunur 9z7yw , ensure your input value and data type configurations are correct datahub subscribe parameters parameters details format choose the format of the data, with possible values of json or fb (flat buffer) topic select the specific device and tag from which data will be collected ignore failed data (litmus edge version 3 11 0 and later) select to ignore data with the output success=false ignore null value (litmus edge version 3 11 0 and later) select to ignore data with the output value=null generator processors generator overview simple generator for testing, use t as the variable generator parameters parameters details amplitude multiplier specify the amplitude multiplier for the generated signal formula choose the supported math functions for generating the signal, such as sin, cos, tan, power, sqrt, log, exp, or abs generator type user defined signal generation or pre defined generation periodicity define the periodicity of the signal in seconds strength specify the strength of the simulated wave approximation, with the maximum value being 10 timer interval set the timer in milliseconds if no event occurs, this timer is used to keep displaying the output continually enter zero to disable the timer inject processors inject overview generates a new message event based on the provided inputs inject parameters parameters details inject field this parameter specifies the name of the field in the message where the data will be injected inject value type this defines the type of value being injected options include string, integer, boolean, etc injected value this is the actual value that will be injected into the specified field timing mode this parameter controls when the message injection occurs options include once and interval timer interval type if you're using a timed injection, this parameter defines the type of interval (e g , seconds, minutes, or hours) timer interval value this specifies the duration for the timer interval