History

Xun(Perry) Liu cbd192c52e feat: Implement logic to generate way-2-nodes mapping and convert traffic result to nodes-2-speed (#28 ) * feat: Implement logic to generate way-2-nodes mapping and convert from way-2-speed to nodes-2-speed for OSRM Issue: https://github.com/Telenav/osrm-backend/issues/22 * fix:Comments and typo in traffic generator. * fix: Fix the issue of protocal and refine function names * fix: Remove suffix of "100" for telenav wayids * feat: Add unit test for generatespeedtable * fix: Avoid upload test pbf into git * feat: Handle traffic flow and add related unit test * Update Readme * fix: enable real function (cherry picked from commit 81015b9977847ffe61c7e8793e1cecb229727a07) * docs: fix a typo		2019-06-28 11:10:54 +08:00
..
go	feat: Implement logic to generate way-2-nodes mapping and convert traffic result to nodes-2-speed (#28 )	2019-06-28 11:10:54 +08:00
.gitignore	Integrate Telenav Traffic Design and traffic_updater implementation (#18 )	2019-06-17 13:50:31 -07:00
proxy.thrift	Update proxy thrift RPC protocol (#29 )	2019-06-26 11:29:58 -07:00
README.md	feat: Implement logic to generate way-2-nodes mapping and convert traffic result to nodes-2-speed (#28 )	2019-06-28 11:10:54 +08:00

README.md

OSRM Traffic Updater

The OSRM Traffic Updater is designed for pull traffic data from Traffic Proxy(Telenav) then dump to OSRM required traffic.csv. Refer to OSRM with Telenav Traffic Design and OSRM Traffic for more details.
We have implemented both Python and Go version. Both of them have same function(pull data then dump to csv), but the Go implementation is about 23 times faster than Python implementation. So strongly recommended to use Go implementation as preference.

E.g. 6727490 lines traffic of NA region
- Go Implementation: about 9 seconds
- Python Implementation: about 210 seconds

RPC Protocol

See proxy.thrift for details.

Python Implementation

The python based implementation has been deprecated due to bad performance. See Deprecated Python Implementation Codes if you'd like to see code details.

Go Implementation

Requirements

go version go1.12.5 linux/amd64
thrift 0.12.0
- clone thrift from github.com/apache/thrift, then checkout branch 0.12.0
change thrift imports in generated codes gen-go/proxy
- git.apache.org/thrift.git/lib/go/thrift -> github.com/apache/thrift/lib/go/thrift

Usage

$ cd $GOPATH
$ go install github.com/Telenav/osrm-backend/traffic_updater/go/osrm_traffic_updater
$ ./bin/osrm_traffic_updater -h
Usage of ./bin/osrm_traffic_updater:
  -c string
    	traffic proxy ip address (default "127.0.0.1")
  -d	use high precision speeds, i.e. decimal. (default false)
  -f string
    	OSRM traffic csv file (default "traffic.csv")
  -m string
    	OSRM way id to node ids mapping table (default "wayid2nodeids.csv")
  -p int
    	traffic proxy listening port (default 6666)

wayid2nodeids_extractor

Extract wayid to nodeids mapping from PBF

Usage

$ cd $GOPATH
$ go install github.com/Telenav/osrm-backend/traffic_updater/go/wayid2nodeid_extractor
$ ./bin/wayid2nodeid_extractor -h
Usage of ./bin/wayid2nodeid_extractor:
  -b	Is pbf generated by telenav internally
  -i string
    	Input pbf file.
  -o string
    	Output csv file