Currently route results are annotated with additional path information,
such as geometries, turn-by-turn steps and other metadata.
These annotations are generated if they are not requested or returned
in the response.
Datasets needed to generate these annotations are loaded and available
to the OSRM process even when unused.
This commit is a first step towards making the loading of these datasets
optional. We refactor the code so that route annotations are only
generated if explicitly requested and needed in the response.
Specifically, we change the following annotations to be lazily generated:
- Turn-by-turn steps
- Route Overview geometry
- Route segment metadata
For example. a /route/v1 request with
steps=false&overview=false&annotations=false
would no longer call the following data facade methods:
- GetOSMNodeIDOfNode
- GetTurnInstructionForEdgeID
- GetNameIndex
- GetNameForID
- GetRefForID
- GetTurnInstructionForEdgeID
- GetClassData
- IsLeftHandDriving
- GetTravelMode
- IsSegregated
- PreTurnBearing
- PostTurnBearing
- HasLaneData
- GetLaneData
- GetEntryClass
Requests that include segment metadata and/or overview geometry
but not turn-by-turn instructions will also benefit from this,
although there is some interdependency with the step instructions
- a call to GetTurnInstructionForEdgeID is still required.
Requests for OSM annotations will understandably still need to
call GetOSMNodeIDOfNode.
Making these changes unlocks the optional loading of data contained in
the following OSRM files:
- osrm.names
- osrm.icd
- osrm.nbg_nodes (partial)
- osrm.ebg_nodes (partial)
- osrm.edges
* Revert "Update changelog"
This reverts commit 9b779c704f.
* Revert "Fix formating"
This reverts commit 5bd7d04fe3.
* Revert "Fix bug in computation of distance offset for phantom node"
This reverts commit 0f78f7b2cc.
* Revert "Adjust text cases for flightly different matching due to rounding"
This reverts commit 8473be69d2.
* Revert "Round network distance to deci-meter to retain previous behavior"
This reverts commit c0124f7d77.
* Revert "Preserve heap state in map matching"
This reverts commit b630b4e32a.
* Revert "Use distance functions from many to many"
This reverts commit 89fabc1b9c.
* Revert "Use FCC algorithm for map matching distance calculation"
This reverts commit a649a8a5cf.
This adds the ability to mark ways with a user-defined
class in the profile. This class information will be included
in the response as property of the RouteStep object.
