MapProxy
简介
MapProxy 是地理空间数据的开源代理。它可以缓存、加速和转换现有地图服务中的数据，并为任何桌面或 web GIS 客户端提供服务。
安装和使用
本地运行
依赖包安装：
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| dnf install -y python3-pyyaml python3-pyproj python3-lxml geos-devel gdal-devel python3-shapely
pip install Pillow six MapProxy
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服务检测：
创建配置样例：
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| mapproxy-util create -t base-config mapproxy
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运行服务：
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| mapproxy-util serve-develop mapproxy/mapproxy.yaml
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容器安装
Dockerfile
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| FROM python:alpine
WORKDIR /opt
RUN apk add py3-yaml py3-build geos-dev py3-lxml gdal-dev py3-shapely proj-util gcc g++
RUN pip install Pillow pyproj six MapProxy
RUN mapproxy-util create -t base-config mapproxy
EXPOSE 8080
ENTRYPOINT ["mapproxy-util","serve-develop","-b","0.0.0.0"]
CMD ["/opt/mapproxy/mapproxy.yaml"]
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Docker-compose file
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| version: "3.8"
services:
mapproxy:
build: .
image: mapproxy:latest
ports:
- "8080:8080"
volumes:
- ./xxx.yaml:/opt/mapproxy/mapproxy.yaml
- <path>:/tmp/mapcenter/cache
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样例配置
代理服务可以进行如下配置：
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| services:
demo:
wmts:
md:
title: demo
abstract: demo
online_resource: http://demo:8080
layers:
- name: demo
title: EPSG:3857
sources: [ demo_cache ]
caches:
demo_cache:
sources: [ demo_tiles ]
format: image/png
grids: [ osm_grid ]
sources:
demo_tiles:
type: tile
url: http://xxx.xxx.xxx:xxxx/xxxx/%(z)s/%(y)s/%(x)s.png
grid: osm_grid
grids:
osm_grid:
name: EPSG:3857
srs: EPSG:3857
origin: nw
num_levels: 19
bbox: [ -20037508.3427892,-20037508.3427892,20037508.3427892,20037508.3427892 ]
globals:
cache:
base_dir: '/tmp/mapcenter/cache'
lock_dir: '/tmp/mapcenter/cache/locks'
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手动缓存
如需缓存数据可以编写如下配置和命令：
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| seeds:
demo_seed:
caches: [ demo_cache ]
levels:
to: 2
refresh_before:
mtime: ./reseed.time
cleanups:
demo_remove:
caches: [ demo_cache ]
remove_all: true
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| mapproxy-seed -f mapcenter.yaml -s seed.yaml -c 1 --reseed-interval 14d --reseed-file reseed.time --progress-file .mapproxy_seed_progress
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注：此命令代表重新缓存需要间隔 14 天，且保存执行过程和时间到缓存文件中，如果有需要可以配合 --continue 命令继续执行。
独立部署
如果需要将缓存之后的文件单独部署为服务可以使用如下配置：
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| services:
demo:
wmts:
md:
title: demo
abstract: demo
online_resource: http://demo:8080
layers:
- name: demo
title: EPSG:3857
sources: [ demo_cache ]
caches:
demo_cache:
sources: []
format: image/png
grids: [ osm_grid ]
grids:
osm_grid:
name: EPSG:3857
srs: EPSG:3857
origin: nw
num_levels: 19
bbox: [ -20037508.3427892,-20037508.3427892,20037508.3427892,20037508.3427892 ]
globals:
cache:
base_dir: '/tmp/mapcenter/cache'
lock_dir: '/tmp/mapcenter/cache/locks'
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注：在缓存目录中应该存在如下名称的数据文件夹 demo_cache_EPSG3857,tile_locks
参考资料
项目原文
配置样例