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style: format extracted local services

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Sameh Khamis committed 2026-09-12 13:01:49 -07:00
1 parent 233285fe12
commit 5223b6df5b
33 files changed
+1785 -830
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server/providers/military-installations.js
+83 -20
View File
@@ -1,11 +1,31 @@
import { makeRateLimiter, clientKey } from './common/rate-limit.js';
import { MILITARY_INSTALLATION_ELEMENT_CAP, MILITARY_INSTALLATION_MAX_RESPONSE_BYTES, MILITARY_INSTALLATION_DISK_TTL_MS, MILITARY_INSTALLATION_STALE_MS } from './military-installations/constants.js';
import {
MILITARY_INSTALLATION_ELEMENT_CAP,
MILITARY_INSTALLATION_MAX_RESPONSE_BYTES,
MILITARY_INSTALLATION_DISK_TTL_MS,
MILITARY_INSTALLATION_STALE_MS,
} from './military-installations/constants.js';
import { fetchOverpassPayload } from './overpass/transport.js';
import { _militaryInstallationCache, trimMilitaryInstallationCache, writeMilitaryInstallationDisk, resolveMilitaryInstallationTier, readMilitaryInstallationDisk } from './military-installations/cache.js';
import { validMilitaryInstallationBox, quantizeMilitaryInstallationBox, militaryInstallationCacheKey, militaryInstallationFailureReason } from './military-installations/query.js';
import {
_militaryInstallationCache,
trimMilitaryInstallationCache,
writeMilitaryInstallationDisk,
resolveMilitaryInstallationTier,
readMilitaryInstallationDisk,
} from './military-installations/cache.js';
import {
validMilitaryInstallationBox,
quantizeMilitaryInstallationBox,
militaryInstallationCacheKey,
militaryInstallationFailureReason,
} from './military-installations/query.js';
import { coalesceProxyRequest } from './common/http.js';
const _militaryInstallationsRateLimiter = makeRateLimiter({ windowMs: 60_000, max: 90, globalMax: 300 });
const _militaryInstallationsRateLimiter = makeRateLimiter({
windowMs: 60_000,
max: 90,
globalMax: 300,
});
const _militaryInstallationInFlight = new Map();
@@ -17,12 +37,23 @@ function militaryInstallationsProxy() {
`data=${encodeURIComponent(ql)}`,
MILITARY_INSTALLATION_MAX_RESPONSE_BYTES,
);
if (upstream.status >= 400 || upstream.rateLimited || upstream.runtimeError) {
throw Object.assign(new Error('Mapped installation upstream unavailable'), {
installationReason: upstream.rateLimited ? 'rate_limited'
: upstream.status === 504 ? 'timeout'
: upstream.runtimeError ? 'query_failed' : 'unavailable',
});
if (
upstream.status >= 400 ||
upstream.rateLimited ||
upstream.runtimeError
) {
throw Object.assign(
new Error('Mapped installation upstream unavailable'),
{
installationReason: upstream.rateLimited
? 'rate_limited'
: upstream.status === 504
? 'timeout'
: upstream.runtimeError
? 'query_failed'
: 'unavailable',
},
);
}
const parsed = JSON.parse(upstream.body);
const elements = Array.isArray(parsed?.elements)
@@ -53,7 +84,10 @@ function militaryInstallationsProxy() {
return;
}
if (!_militaryInstallationsRateLimiter(clientKey(req))) {
res.writeHead(429, { 'Content-Type': 'application/json', 'Retry-After': '5' });
res.writeHead(429, {
'Content-Type': 'application/json',
'Retry-After': '5',
});
res.end(JSON.stringify({ error: 'Rate limit exceeded' }));
return;
}
@@ -61,7 +95,11 @@ function militaryInstallationsProxy() {
const requested = validMilitaryInstallationBox(url.searchParams);
if (!requested) {
res.writeHead(400, { 'Content-Type': 'application/json' });
res.end(JSON.stringify({ error: 'A non-dateline bbox no larger than 10 degrees is required' }));
res.end(
JSON.stringify({
error: 'A non-dateline bbox no larger than 10 degrees is required',
}),
);
return;
}
// Query the SNAPPED box, not the raw viewport: neighbouring views then
@@ -70,7 +108,9 @@ function militaryInstallationsProxy() {
// response, so a truncated tile can never starve the actual viewport. It
// is keyed separately so exact and snapped answers never collide.
const exact = url.searchParams.get('exact') === '1';
const box = exact ? requested : quantizeMilitaryInstallationBox(requested);
const box = exact
? requested
: quantizeMilitaryInstallationBox(requested);
// Key at the precision the query actually uses (see militaryInstallationCacheKey).
const key = exact
? `exact:${militaryInstallationCacheKey(box, 5)}`
@@ -81,7 +121,8 @@ function militaryInstallationsProxy() {
cacheKey: key,
memoryCache: _militaryInstallationCache,
inFlight: _militaryInstallationInFlight,
readDisk: () => readMilitaryInstallationDisk(key, MILITARY_INSTALLATION_DISK_TTL_MS),
readDisk: () =>
readMilitaryInstallationDisk(key, MILITARY_INSTALLATION_DISK_TTL_MS),
now,
});
if (preflight.source !== 'UPSTREAM') {
@@ -89,8 +130,14 @@ function militaryInstallationsProxy() {
_militaryInstallationCache.set(key, preflight.entry);
trimMilitaryInstallationCache();
}
res.writeHead(200, { 'Content-Type': 'application/json', 'Cache-Control': 'public, max-age=60', 'X-Military-Installations': preflight.source });
res.end(JSON.stringify({ ...preflight.entry.payload, status: 'cached' }));
res.writeHead(200, {
'Content-Type': 'application/json',
'Cache-Control': 'public, max-age=60',
'X-Military-Installations': preflight.source,
});
res.end(
JSON.stringify({ ...preflight.entry.payload, status: 'cached' }),
);
return;
}
const request = coalesceProxyRequest(
@@ -108,7 +155,11 @@ function militaryInstallationsProxy() {
res.end(JSON.stringify(payload));
} catch (error) {
if (cached && now - cached.cachedAt <= MILITARY_INSTALLATION_STALE_MS) {
res.writeHead(200, { 'Content-Type': 'application/json', 'Cache-Control': 'no-store', 'X-Military-Installations': 'STALE' });
res.writeHead(200, {
'Content-Type': 'application/json',
'Cache-Control': 'no-store',
'X-Military-Installations': 'STALE',
});
res.end(JSON.stringify({ ...cached.payload, status: 'stale' }));
return;
}
@@ -116,12 +167,24 @@ function militaryInstallationsProxy() {
// layer (the same serve-stale rule the Overpass proxy applies).
const stale = await readMilitaryInstallationDisk(key, Infinity);
if (stale) {
res.writeHead(200, { 'Content-Type': 'application/json', 'Cache-Control': 'no-store', 'X-Military-Installations': 'STALE-DISK' });
res.writeHead(200, {
'Content-Type': 'application/json',
'Cache-Control': 'no-store',
'X-Military-Installations': 'STALE-DISK',
});
res.end(JSON.stringify({ ...stale.payload, status: 'stale' }));
return;
}
res.writeHead(503, { 'Content-Type': 'application/json', 'Cache-Control': 'no-store' });
res.end(JSON.stringify({ error: 'Mapped installation context is temporarily unavailable', reason: militaryInstallationFailureReason(error) }));
res.writeHead(503, {
'Content-Type': 'application/json',
'Cache-Control': 'no-store',
});
res.end(
JSON.stringify({
error: 'Mapped installation context is temporarily unavailable',
reason: militaryInstallationFailureReason(error),
}),
);
}
});
}