General
Flow based data-collector and time-centric data-processor.
Faxe's inner core is based on a dataflow computing engine and it's components also called nodes
can be
freely combined into an acyclic graph.
Unlike other flowbased frameworks (node_red, ...) in Faxe computing graphs are built with a DSL called dfs
.
Rest Api
FAXE can be managed via its rest api.
General
Data in faxe
In faxe we deal with data_points
and data_batches
. These data-items
are emitted by nodes
Every data_point
consists of a ts
field, fields
and tags
.
The value of the ts field is always: unix-timestamp in millisecond precision without a timezone.
fields
and tags
are essentially key-value maps
.
Valid data-types for field and tag values are: string, integer, float, key-value map (also deeply nested) and lists
.
The only valid data-type for field and tag keys is string
.
A data_batch consists of a list of data_points ordered by timestamp.
Most faxe nodes can deal with both points and batches.
Value referencing
As field and tag values can be deeply nested maps and lists, it is possible to use a JSON-path
like syntax
to declare and reference these values:
Valid examples:
averages
axis.z.cur
value.sub[2].data
averages.emitted[5]