Workflow description format

Support for templates

HyperFlow workflow description supports variable interpolation. You can put {{var_name}} variables in the workflow.json, and provide values for these variables in one of the following ways:

• Through hflow command line parameter --var, e.g.

hflow run <wf_dir> --var="function=command_print" --var="workdir=/home/workdir"

• Through environment variables starting with HF_VAR_, e.g.

export HF_VAR_function=command_print

This will result in replacing all occurrences of {{function}} in workflow.json with command_print when the workflow is run with the hflow run command.