metadata_to_tilejson

scripts/http_host/.gitignore

@@ -0,0 +1 @@
+*.json

scripts/http_host/metadata_to_tilejson.py

@@ -0,0 +1,59 @@
+#!/usr/bin/env python3
+import json
+from pathlib import Path
+from pprint import pprint
+
+import click
+
+
+@click.command()
+@click.argument(
+    'metadata_path', type=click.Path(exists=True, dir_okay=False, file_okay=True, path_type=Path)
+)
+@click.argument('tilejson_path', type=click.Path(path_type=Path))
+@click.argument('url_prefix')
+@click.option('--minify', is_flag=True, help='Minify the generated JSON')
+def cli(metadata_path: Path, tilejson_path: Path, url_prefix: str, minify: bool):
+    """
+    Takes a MBTiles metadata.json and generates a TileJSON 3.0.0 file
+
+    URL_PREFIX: Base URL to use as a prefix for tiles in the generated TileJSON.
+
+    Reference: https://github.com/mapbox/tilejson-spec/tree/master/3.0.0
+    """
+
+    tilejson = dict(tilejson='3.0.0')
+
+    with open(metadata_path) as fp:
+        metadata = json.load(fp)
+
+    metadata_json_key = json.loads(metadata.pop('json'))
+
+    tilejson['tiles'] = [url_prefix.rstrip('/') + '/{z}/{x}/{y}.pbf']
+
+    ''
+    tilejson['vector_layers'] = metadata_json_key.pop('vector_layers')
+    assert not metadata_json_key  # check that no more keys left
+
+    tilejson['attribution'] = metadata.pop('attribution')
+    tilejson['bounds'] = [float(n) for n in metadata.pop('bounds').split(',')]
+    tilejson['center'] = [float(n) for n in metadata.pop('center').split(',')]
+    tilejson['center'][2] = 1
+
+    tilejson['description'] = metadata.pop('description')
+
+    tilejson['maxzoom'] = int(metadata.pop('maxzoom'))
+    tilejson['minzoom'] = int(metadata.pop('minzoom'))
+
+    tilejson['name'] = metadata.pop('name')
+    tilejson['version'] = metadata.pop('version')
+
+    with open(tilejson_path, 'w') as fp:
+        if minify:
+            json.dump(tilejson, fp, ensure_ascii=False, separators=(',', ':'))
+        else:
+            json.dump(tilejson, fp, ensure_ascii=False, indent=2)
+
+
+if __name__ == '__main__':
+    cli()

scripts/http_host/nginx_sync/nginx_sync.py

@@ -7,6 +7,9 @@ from pathlib import Path
 import click
 
 
+RUNS_DIR = Path('/data/ofm/http_host/runs')
+
+
 @click.command()
 def cli():
     if not Path('/etc/fstab').exists():
@@ -30,9 +33,42 @@ def cli():
 
         area, version = subdir.name.split('-')
 
+        run_dir = RUNS_DIR / area / version
+        if not run_dir.is_dir():
+            print(f"{run_dir} doesn't exists, skipping")
+            continue
+
+        tilejson_path = run_dir / 'tilejson-tiles-org.json'
+
+        metadata_path = subdir / 'metadata.json'
+        if not metadata_path.is_file():
+            print(f"{metadata_path} doesn't exists, skipping")
+            continue
+
+        url_prefix = f'https://tiles.openfreemap.org/{area}/{version}/tiles//'
+
+        subprocess.run(
+            [
+                sys.executable,
+                Path(__file__).parent.parent / 'metadata_to_tilejson.py',
+                '--minify',
+                metadata_path,
+                tilejson_path,
+                url_prefix,
+            ],
+            check=True,
+        )
+
         version_str = rf"""
-            location /{area}/{version}/ {{    # trailing hash important
-                alias {subdir}/;              # trailing hash important
+            location /{area}/{version} {{    # no trailing hash
+                alias {tilejson_path};       # no trailing hash
+
+                add_header Cache-Control public;
+                expires 10y;
+            }}
+
+            location /{area}/{version}/ {{    # trailing hash
+                alias {subdir}/tiles/;        # trailing hash
                 try_files $uri @empty;
 
                 add_header Cache-Control public;
@@ -45,7 +81,7 @@ def cli():
         if not help_text:
             help_text = (
                 '\ntest with:\n'
-                f'curl -H "Host: ofm" -I http://localhost/{area}/{version}/tiles/14/8529/5975.pbf'
+                f'curl -H "Host: ofm" -I http://localhost/{area}/{version}/14/8529/5975.pbf'
             )
 
     nginx_template = nginx_template.replace('___LOCATION_BLOCKS___', location_block_str)

scripts/http_host/nginx_sync/nginx_template.conf

@@ -1,5 +1,5 @@
 server {
-    server_name ofm tiles.openfreemaps.org;
+    server_name ofm tiles.openfreemap.org;
 
     # disabling access log by default
     # access_log /data/ofm/http_host/logs_nginx/nginx-access.log access_json buffer=32k;