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cloudflare worker supports PMTILES_PATH

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This commit is contained in:
Brandon Liu
2022-07-21 15:30:53 +08:00
parent d482611910
commit fc5e366bd2
2 changed files with 30 additions and 7 deletions
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16
serverless/cloudflare/worker.test.ts
View File

@@ -1,5 +1,17 @@
import { test } from "zora"; import { test } from "zora";
import { pmtiles_path } from "./worker";
test("stub test", (assertion) => { test("pmtiles path", (assertion) => {
assertion.ok(true); let result = pmtiles_path(undefined, "foo");
assertion.equal(result, "foo.pmtiles");
});
test("pmtiles path", (assertion) => {
let result = pmtiles_path("folder/{name}/file.pmtiles", "foo");
assertion.equal(result, "folder/foo/file.pmtiles");
});
test("pmtiles path with slash", (assertion) => {
let result = pmtiles_path("folder/{name}/file.pmtiles", "foo/bar");
assertion.equal(result, "folder/foo/bar/file.pmtiles");
}); });

21
serverless/cloudflare/worker.ts
View File

@@ -2,7 +2,7 @@ import { PMTiles, Source } from "../../js";
interface Env { interface Env {
BUCKET: R2Bucket; BUCKET: R2Bucket;
CACHE_TTL: string; PMTILES_PATH: string | undefined;
} }
interface CacheEntry { interface CacheEntry {
@@ -60,6 +60,13 @@ export class LRUCache {
let worker_cache = new LRUCache(); let worker_cache = new LRUCache();
export const pmtiles_path = (p: string | undefined, name: string): string => {
if (p) {
return p.replace("{name}", name);
}
return name + ".pmtiles";
};
const TILE = new RegExp( const TILE = new RegExp(
/^\/([0-9a-zA-Z\/!\-_\.\*\'\(\)]+)\/(\d+)\/(\d+)\/(\d+).pbf$/ /^\/([0-9a-zA-Z\/!\-_\.\*\'\(\)]+)\/(\d+)\/(\d+)\/(\d+).pbf$/
); );
@@ -72,11 +79,15 @@ export default {
): Promise<Response> { ): Promise<Response> {
let url = new URL(request.url); let url = new URL(request.url);
let match = url.pathname.match(TILE); let match = url.pathname.match(TILE)!;
let subrequests = 1; let subrequests = 1;
if (match) { if (match) {
let name = match[1];
let z = +match[2];
let x = +match[3];
let y = +match[4];
class TempSource { class TempSource {
getKey() { getKey() {
return ""; return "";
@@ -85,7 +96,7 @@ export default {
async getBytes(offset: number, length: number) { async getBytes(offset: number, length: number) {
let result = await worker_cache.get( let result = await worker_cache.get(
env.BUCKET, env.BUCKET,
match![1] + ".pmtiles", pmtiles_path(env.PMTILES_PATH, name),
offset, offset,
length length
); );
@@ -100,9 +111,9 @@ export default {
let p = new PMTiles(source); let p = new PMTiles(source);
let metadata = await p.metadata(); let metadata = await p.metadata();
let entry = await p.getZxy(+match[2], +match[3], +match[4]); let entry = await p.getZxy(z, x, y);
if (entry) { if (entry) {
let tile = await env.BUCKET.get(match![1] + ".pmtiles", { let tile = await env.BUCKET.get(pmtiles_path(env.PMTILES_PATH, name), {
range: { offset: entry.offset, length: entry.length }, range: { offset: entry.offset, length: entry.length },
}); });