dynamic-tile-server

diglet

A simple tool for solving common geospatial workflows.

• tms: Tile Map Server
• mbt: Tile builder for vector tiles into the mbtiles spec
• fence: A geofence utility
• dig: A geocoder based on OSM data

This project is under heavy development and APIs/CLIs are subject to change until further notice.

Installation

Install diglet into /usr/local/bin (assuming you have permissions to) like so

curl -sSL https://raw.githubusercontent.com/buckhx/diglet/master/scripts/install.py | sudo python - /usr/local/bin

If you don't have permission at /usr/local/bin, try something like this where you extend your PATH

BINDIR=~/diglet
mkdir -p $BINDIR
export PATH=$PATH:$BINDIR
curl -sSL https://raw.githubusercontent.com/buckhx/diglet/master/scripts/install.py | python - $BINDIR

If you just want the binary, the final arg to the install py is a directory to download into

Or do it manually by going to the releases page and download the diglet artifact https://github.com/buckhx/diglet/releases/latest

Currently only building 64 bit linux for simplicity, but will build for more archs as things stabilize. Instructions for building

tms

A tile server in a single binary

Here are some neat things that diglet tms does

• Read-through mmap LRU cache
• Easy peasy-lemon squeezy HTTPS
• Sniffs the tile format and set Content-Type: (pbf, json, gz, jpg, png, etc...)
• HTTP/JSON-RPC/WS endpoints

Some things in the works

• Backend changes are pushed to the front end in real time (via websockets)
• Source specific hooks (on PostGIS insert -> build mbtiles)

Usage

NAME:
   diglet tms - Starts the diglet Tile Map Service

USAGE:
   diglet tms [command options] mbtiles_directory

DESCRIPTION:
   Starts the diglet Tile Map Service

OPTIONS:
   --port "8080"		Port to bind
   --cert, --tls-certificate 	Path to .pem TLS Certificate. Both cert & key required to serve HTTPS
   --key, --tls-private-key 	Path to .pem TLS Private Key. Both cert & key required to serve HTTPS
   --tms-origin			NOT IMPLEMENTED: Use TMS origin, SW origin w/ Y increasing North-wise

If --cert and --key are both set, content will be served over TLS (HTTPS) and unecrypted HTTP will return nothing or a TLS error response

Methods

The following methods are available via the HTTP API. The other methods in the app definition are for use with WS endpoints and mainly deal with tile subscriptions, which will remain undocumented until an official client is released for them. The parameter {tileset-slug} refers to the mbtiles file on disk witout the extenstion and the name .

###ListTilesets

GET /tileset/

List the .mbtiles on disk from --mbtiles and their attributes. The keys are the tileset-slug of the tilesets.

###GetTileset

GET /tileset/{tileset-slug}

Get information about the specific tileset. This information is populated from the mbtiles metadata table.

###GetRawTile

GET /tileset/{tileset-slug}/{z}/{x}/{y}

Get the tile at the given coordinates and return the contents as the response body. Passing json=true as a will return the tile as a json object with it's coordinates

###Gallery

GET /tileset/gallery/{tileset-slug}

A simple gallery to view your tiles with. Only supports vector tiles for now. ?lat={}&lon={}&zoom{} will zoom to desired location.

#mbt

Will build tiles from either geojson or a csv.

If a csv is used, either --csv-lat/--csv-lon or --csv shape must be set to read the coordinates correctly. The csv-shape is a list of list of [[],[],[]] and will only render a single, exterior ring polygon per line. Csv also requires a named header.

Geojson is fair-game, no support for GeometryCollection or Topojson

--filter if included will only include these columns in this properties. Includes all if not added

Valid extentsions for mbtiles are .mbtiles or .mbt

NAME:
   diglet mbt - Builds an mbtiles database from the input data source

USAGE:
   diglet mbt [command options] input_source

DESCRIPTION:
   Builds an mbtiles database from the given format

OPTIONS:
   -o, --output 					REQUIRED: Path to write mbtiles to
   --input-type "sniff"					Type of input files, 'sniff' will pick type based on the extension
   -f, --force						Remove the existing .mbtiles file before running.
   -u, --upsert						Upsert into mbtiles instead of replacing.
   --layer-name "features"				Name of the layer for the features to be added to
   --desc, --description "Generated from Diglet"	Value inserted into the description entry of the mbtiles
   --extent "4096"					Extent of tiles to be built. Default is 4096
   --max, --max-zoom "10"				Maximum zoom level to build tiles for
   --min, --min-zoom "5"				Minimum zoom level to build tiles from
   --filter 						Only include fields keys in this comma delimited list
   --csv-lat						Column containing latitude					
   --csv-lon						Column containint longitude
   --csv-shape						Column containing geometry in geojson-like 'coordinates' form
   --csv-delimiter ","	

#fence & dig

I did a geofencing experiment and may or may not include that in the standard build. Also did some geocoding work from OSM. Hit's ~500 r/s, but unstable so won't be included for now.

Releases

Diglet uses a go library for reading mbtiles that depends on some C code, this makes crosscompiling a bit of a pain, so only linux binaries will be published until there is a need for more platforms. If a major release is it, diglet will be published for most platforms.

We'll include a script and or directions for building on your own.

Minor releases will be built for linux x64 and i386

Major releases will have platform specific binaries

Building

Here are the basics, but you can inspect the .travis.yml for specifics

Prereqs

• go installed, preferably 1.4+
• gcc access
• go get github.com/buckhx/diglet
• cd into diglet

CGO_ENABLED=1
go test -v ./...
go get ./...
go generate
go build -ldflags '-extldflags "-static"'

Some food for thought

Licenses

Here are dependencies and their licenese

• buckhx/diglet: MIT
• buckhx/mbtiles: MIT
• codegangsta/cli: MIT
• qedus/osmpbf: MIT
• gorilla: BSD 3-Clause
• mattn/go-sqlite3: MIT
• go-std-lib: BSD 3-Clause

I got lazy and haven't maintained the licenses...