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Valhalla 3.0 is now available! This release (current master) makes changes to the Valhalla graph tile format. These tile changes are designed to make the tile data more efficient and flexible. However, these changes make Valhalla 3.0 incompatible with data from Valhalla 2.x. Also, any data built using Valhalla 3.0 will not be usable with Valhalla 2.x. See the CHANGELOG to get a brief description of the updates.

Valhalla is an open source routing engine and accompanying libraries for use with OpenStreetMap data. Valhalla also includes tools like time+distance matrix computation, isochrones, elevation sampling, map matching and tour optimization (Travelling Salesman).

Linux/MacOs	Windows	Code Coverage

Valhalla, and all of the projects under the Valhalla organization, use the MIT License. Avatar/logo by Jordan

There are several key features that we hope can differentiate the Valhalla project from other routing and network analysis engines. They are:

• Open source software, on open source data with a very liberal license. Should allow for transparency in development, encourage contribution and community input, and foster use in other projects.
• Tiled hierarchical data structure. Should allow users to have a small memory footprint on memory constrained devices, enable offline routing, provide a means for regional extracts and partial updates.
• Dynamic, runtime costing of edges and vertices within the graph via a plugin architecture. Should allow for customization and alternate route generation.
• C++ based API. Should allow for cross compilation of the various pieces to enable routing on offline portable devices.
• A plugin based narrative and manoeuvre generation architecture. Should allow for generation that is customized either to the administrative area or to the target locale.
• Multi-modal and time-based routes. Should allow for mixing auto, pedestrian, bike and public transportation in the same route or setting a time by which one must arrive at a location.

The Valhalla organization is comprised of several library modules each responsible for a different function. The layout of the various modules is as follows:

• Midgard - Basic geographic and geometric algorithms for use in the various other projects.
• Baldr - The base data structures for accessing and caching tiled route data.
• Sif - Library used in costing of graph nodes and edges. This can be used as input to loki and thor.
• Skadi - Library and service for accessing elevation data. This can be used as input to mjolnir or as a standalone service.
• Mjolnir - Tools for turning open data into Valhalla graph tiles.
• Loki - Library used to search graph tiles and correlate input locations to an entity within a tile. This correlated entity (edge or vertex) can be used as input to thor.
• Meili - Library used to for map-matching.
• Thor - Library used to generate a path through the graph tile hierarchy. This path and attribution along the path can be used as input to odin.
• Odin - Library used to generate manoeuvres and narrative based on a path. This set of directions information can be used as input to tyr.
• Tyr - Service used to handle http requests for a route communicating with all of the other valhalla APIs. The service will format output from odin and support json (and eventually protocol buffer) output.
• Tools - A set command line tools that exercise bits of functionality from the library components above and provide the basis for quality testing and performance benchmarking.
• Demos - A set of demos which allows interacting with the service and APIs.

Documentation is stored in the docs/ folder in this GitHub repository. It can be viewed at valhalla.readthedocs.io.

If you are running Ubuntu (trusty or xenial) Valhalla can be installed quickly and easily via PPA. Try the following:

# grab all of the valhalla software from ppa
sudo add-apt-repository -y ppa:valhalla-core/valhalla
sudo apt-get update
sudo apt-get install -y valhalla-bin

Valhalla uses CMake as build system. When compiling with gcc (GNU Compiler Collection), version 5 or newer is supported.

To install on a Debian or Ubuntu system you need to install its dependencies with:

sudo add-apt-repository -y ppa:valhalla-core/valhalla
sudo apt-get update
sudo apt-get install -y cmake make libtool pkg-config g++ gcc curl unzip jq lcov protobuf-compiler vim-common locales libboost-all-dev libcurl4-openssl-dev zlib1g-dev liblz4-dev libprime-server-dev libprotobuf-dev prime-server-bin
#if you plan to compile with data building support, see below for more info
sudo apt-get install -y libgeos-dev libgeos++-dev libluajit-5.1-dev libspatialite-dev libsqlite3-dev wget sqlite3 spatialite-bin
source /etc/lsb-release
if [[ $(python -c "print int($DISTRIB_RELEASE > 15)") > 0 ]]; then sudo apt-get install -y libsqlite3-mod-spatialite; fi
#if you plan to compile with python bindings, see below for more info
sudo apt-get install -y python-all-dev

For instructions on installing Valhalla on Ubuntu 18.04.x see this script.

To install on macOS, you need to install its dependencies with Homebrew:

# install dependencies (automake & czmq are required by prime_server)
brew install automake cmake libtool protobuf-c boost-python libspatialite pkg-config sqlite3 jq curl wget czmq lz4 spatialite-tools unzip luajit
curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.33.11/install.sh | bash
# following packages are needed for running Linux compatible scripts
brew install bash coreutils binutils
# Update your PATH env variable to include /usr/local/opt/binutils/bin:/usr/local/opt/coreutils/libexec/gnubin

Now, clone the Valhalla repository

git clone --recurse-submodules https://github.com/valhalla/valhalla.git

Then, build prime_server.

After getting the dependencies install it with:

mkdir build
cd build
cmake .. -DCMAKE_BUILD_TYPE=Release
make -j$(nproc) # for macos, use: make -j$(sysctl -n hw.physicalcpu)
sudo make install

Important build options include:

For more build options run the interactive GUI:

cd build
cmake ..
ccmake ..

For more information on binaries, see Command Line Tools section below and the docs.

Support for Windows is not yet fully exploited. Building the Valhalla library works flawlessly, as well as the following application modules:

• TOOLS: utilities to query and benchmark various components
• DATA_TOOLS: utilities to build input data and handle transit

It's recommended to work with the following toolset:

• Visual Studio with C++ support
• Visual Studio Code (easier and lighter to handle)
• vcpkg to install packages
• CMake

1. Install the following packages with vcpkg (assuming you're on a 64-bit machine):

# Basic packages
C:\path\to\vcpkg.exe install boost-algorithm boost-config boost-core boost-heap boost-lexical-cast boost-property-tree boost-variant boost-geometry boost-program-options curl protobuf zlib --triplet x64-windows
# If you want to build with DATA_TOOLS & TOOLS
C:\path\to\vcpkg.exe sqlite3 proj4 luajit libspatialite geos --triplet x64-windows

2. Let CMake configure the build with the required modules enabled. Note, you have to manually link LuaJIT for some reason, e.g. the final command could look like

"C:\Program Files\CMake\bin\cmake.EXE" --no-warn-unused-cli -DENABLE_TOOLS=ON -DENABLE_DATA_TOOLS=ON -DENABLE_SERVICES=OFF -DENABLE_PYTHON_BINDINGS=OFF -DLUA_LIBRARIES=path\to\vcpkg\installed\x64-windows\lib\lua51.lib -DLUA_INCLUDE_DIR=path\to\vcpkg\installed\x64-windows\include\luajit -DENABLE_BENCHMARKS=OFF -DENABLE_TESTS=OFF -DVCPKG_TARGET_TRIPLET=x64-windows -DCMAKE_TOOLCHAIN_FILE=path\to\vcpkg\scripts\buildsystems\vcpkg.cmake -DCMAKE_EXPORT_COMPILE_COMMANDS:BOOL=TRUE -Hpath/to/project -Bpath/to/project/build -G "Visual Studio 16 2019" -T host=x64 -A x64

3. Run the build for all targets.

The following bash should be enough to make some routing data and start a server using it. (Note - if you would like to run an elevation lookup service with Valhalla follow the instructions here).

#download some data and make tiles out of it
#NOTE: you can feed multiple extracts into pbfgraphbuilder
wget https://download.geofabrik.de/europe/switzerland-latest.osm.pbf https://download.geofabrik.de/europe/liechtenstein-latest.osm.pbf
#get the config and setup
mkdir -p valhalla_tiles
valhalla_build_config --mjolnir-tile-dir ${PWD}/valhalla_tiles --mjolnir-tile-extract ${PWD}/valhalla_tiles.tar --mjolnir-timezone ${PWD}/valhalla_tiles/timezones.sqlite --mjolnir-admin ${PWD}/valhalla_tiles/admins.sqlite > valhalla.json
#build routing tiles
#TODO: run valhalla_build_admins?
valhalla_build_tiles -c valhalla.json switzerland-latest.osm.pbf liechtenstein-latest.osm.pbf
#tar it up for running the server
find valhalla_tiles | sort -n | tar cf valhalla_tiles.tar --no-recursion -T -

#grab the demos repo and open up the point and click routing sample
git clone --depth=1 --recurse-submodules --single-branch --branch=gh-pages https://github.com/valhalla/demos.git
firefox demos/routing/index-internal.html &
#NOTE: set the environment pulldown to 'localhost' to point it at your own server

#start up the server
valhalla_service valhalla.json 1
#curl it directly if you like:
curl https://localhost:8002/route --data '{"locations":[{"lat":47.365109,"lon":8.546824,"type":"break","city":"Zürich","state":"Altstadt"},{"lat":47.108878,"lon":8.394801,"type":"break","city":"6037 Root","state":"Untere Waldstrasse"}],"costing":"auto","directions_options":{"units":"miles"}}' | jq '.'

#HAVE FUN!

We welcome contributions to valhalla. If you would like to report an issue, or even better fix an existing one, please use the valhalla issue tracker on GitHub.

If you would like to make an improvement to the code, please be aware that all valhalla projects are written mostly in C++11. We use clang-format v7.0 to format the code. We welcome contributions as pull requests to the repository and highly recommend that your pull request include a test to validate the addition/change of functionality.

Note that our CI system checks that code formatting is consistent, and the build will fail if formatting rules aren't followed. Please run ./scripts/format.sh over your code before committing, to auto-format it in the projects preferred style.

Also note that we run some clang-tidy linting over the code as well (see .clang-tidy for the list of rules enforced). You can run ./scripts/clang-tidy-only-diff.sh over the code before committing to ensure you haven't added any of the common problems we check for (Note: ./scripts/clang-tidy-only-diff.sh requires the exitence of a compile_commands.json database. You can generate this file by running cmake .. -DCMAKE_EXPORT_COMPILE_COMMANDS=On ... && make.

scripts/clang-tidy-only-diff.sh is run in CI and will the build if it detects any issues.

Additionally, a check with ASan is run in CI. We recommend testing with ASan and debug symbols locally prior to commiting, with the -DENABLE_ADDRESS_SANITIZER=ON -DCMAKE_BUILD_TYPE=Debug flags during cmake configuration. As long as leak sanitizer (which is a part of address sanitizer) is not currently supported across different platforms it is disabled in the CI. You can disable it locally with the environment variable ASAN_OPTIONS=detect_leaks=0.

We highly encourage running and updating the tests to make sure no regressions have been made. We use the Automake test suite to run our tests by simply making the check target:

make check

To run an individual test, make run-<test name> from the build directory or ./test/<testname>

You may check some notes on unit tests

Coverage reports are automatically generated using codecov for each pull request, but you can also build them locally by passing -DENABLE_COVERAGE=On and running make coverage.

Valhalla includes several microbenchmarks which you can build and run using:

make benchmarks
make run-benchmarks

They are enabled by the -DENABLE_BENCHMARKS=On CMake flag and are currently only available for Linux and MacOS.

A C++ application that will create a route path with guidance instructions for the specified route request.

#Usage:
./valhalla_run_route -j '<JSON_ROUTE_REQUEST>' --config <CONFIG_FILE>
#Example:
./valhalla_run_route -j '{"locations":[{"lat":40.285488,"lon":-76.650597,"type":"break","city":"Hershey","state":"PA"},{"lat":40.794025,"lon":-77.860695,"type":"break","city":"State College","state":"PA"}],"costing":"auto","directions_options":{"units":"miles"}}' --config ../conf/valhalla.json

• Batch Run_Route