JSON module graph queries

This directory contains jq scripts that query Soong's module graph.

It uses the JSON module graph that Soongs dumps when the SOONG_DUMP_JSON_MODULE_GRAPH environment variable is set.

Usage:

SOONG_DUMP_JSON_MODULE_GRAPH=<some file> m nothing
query.sh [-C] <command> <some file> [argument]

The following commands are available:

• printModule prints all variations of a given module
• filterSubtree dumps only those modules that are in the given subtree of the source tree
• directDeps prints the names of the direct dependencies of the given module
• transitiveDeps prints the names of the transitive dependencies of the given module
• fullTransitiveDeps returns the full transitive dependencies of the given module
• distanceFromLeaves prints the longest distance each module has from a leaf in the module graph within the transitive closure of given module
• usedVariations returns a map that shows which variations are used in the input and what values they take
• variantTransitions summarizes the variant transitions in the transitive closure of the given module

It‘s best to filter the full module graph to the part you are interested in because jq isn’t too fast on the full graph.