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Add json api #36

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merged 1 commit into from
Apr 17, 2018
Merged

Add json api #36

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6 changes: 6 additions & 0 deletions src/interfaces/types.d.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -18,9 +18,15 @@ interface PkgSize {
disabled?: boolean;
}

interface ApiResponse {
publishSize: number;
installSize: number;
}

interface ResultProps {
pkgSize: PkgSize;
readings: PkgSize[];
cacheResult: boolean;
}

interface ParsedUrlQuery {
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105 changes: 54 additions & 51 deletions src/page-props/results.ts
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Expand Up @@ -10,63 +10,66 @@ import { calculatePackageSize } from '../util/backend/npm-stats';
import { versionUnknown } from '../util/constants';

export async function getResultProps(query: ParsedUrlQuery, tmp: string) {
if (query && typeof query.p === 'string') {
let { name, version } = parsePackageString(query.p);
let manifest: NpmManifest;
try {
manifest = await fetchManifest(name);
} catch (e) {
console.error(`Package ${name} does not exist in npm`);
return packageNotFound(name);
}

if (!version) {
version = await getLatestVersion(manifest);
console.log(`Querystring missing version, using version ${name}@${version}`);
}
if (!query || typeof query.p !== 'string') {
throw new Error(`Unknown query string ${query}`);
}
let { name, version } = parsePackageString(query.p);
let manifest: NpmManifest;
let cacheResult = true;

const allVersions = getAllVersions(manifest);
if (!allVersions.includes(version)) {
console.error(`Version ${name}@${version} does not exist in npm`);
return packageNotFound(name);
}
try {
manifest = await fetchManifest(name);
} catch (e) {
console.error(`Package ${name} does not exist in npm`);
return packageNotFound(name);
}

const filteredVersions = isFullRelease(version)
? allVersions.filter(isFullRelease)
: allVersions;
const chartVersions = getVersionsForChart(filteredVersions, version, 7);
if (!version) {
version = await getLatestVersion(manifest);
cacheResult = false;
console.log(`Querystring missing version, using version ${name}@${version}`);
}

let existing = await findOne(name, version);
if (!existing) {
console.log(`Cache miss for ${name}@${version} - running npm install...`);
const start = new Date();
existing = await calculatePackageSize(name, version, tmp);
const end = new Date();
const sec = (end.getTime() - start.getTime()) / 1000;
console.log(`Calculated size of ${name}@${version} in ${sec}s`);
insert(existing);
}
const allVersions = getAllVersions(manifest);
if (!allVersions.includes(version)) {
console.error(`Version ${name}@${version} does not exist in npm`);
return packageNotFound(name);
}

const cachedVersions = await findAll(name);
const filteredVersions = isFullRelease(version)
? allVersions.filter(isFullRelease)
: allVersions;
const chartVersions = getVersionsForChart(filteredVersions, version, 7);

const readings = chartVersions.map(v => {
if (v in cachedVersions) {
return cachedVersions[v];
} else {
return {
name: name,
version: v,
publishSize: 0,
installSize: 0,
disabled: true,
};
}
});
const result: ResultProps = { pkgSize: existing, readings };
return result;
let existing = await findOne(name, version);
if (!existing) {
console.log(`Cache miss for ${name}@${version} - running npm install...`);
const start = new Date();
existing = await calculatePackageSize(name, version, tmp);
const end = new Date();
const sec = (end.getTime() - start.getTime()) / 1000;
console.log(`Calculated size of ${name}@${version} in ${sec}s`);
insert(existing);
}

throw new Error(`Unknown query string ${query}`);
const cachedVersions = await findAll(name);

const readings = chartVersions.map(v => {
if (v in cachedVersions) {
return cachedVersions[v];
} else {
return {
name: name,
version: v,
publishSize: 0,
installSize: 0,
disabled: true,
};
}
});

const result: ResultProps = { pkgSize: existing, readings, cacheResult };
return result;
}

function packageNotFound(name: string) {
Expand All @@ -77,6 +80,6 @@ function packageNotFound(name: string) {
installSize: 0,
disabled: true,
};
const result: ResultProps = { pkgSize, readings: [] };
const result: ResultProps = { pkgSize, readings: [], cacheResult: false };
return result;
}
15 changes: 12 additions & 3 deletions src/server.ts
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Expand Up @@ -4,7 +4,7 @@ import { createReadStream } from 'fs';
import { mimeType, cacheControl } from './util/backend/lookup';
import { renderPage } from './pages/_document';

import { browserUrl, browserMapUrl, pages } from './util/constants';
import { browserUrl, browserMapUrl, pages, versionUnknown } from './util/constants';
import { getResultProps } from './page-props/results';
import { getBadgeUrl } from './util/badge';

Expand All @@ -25,11 +25,20 @@ createServer(async (req, res) => {
res.setHeader('Cache-Control', cacheControl(isProd, 7));
createReadStream(`./dist${pathname}`).pipe(res);
} else if (pathname === pages.badge) {
const resultProps = await getResultProps(query, TMPDIR);
const badgeUrl = getBadgeUrl(resultProps.pkgSize);
const { pkgSize, cacheResult } = await getResultProps(query, TMPDIR);
const badgeUrl = getBadgeUrl(pkgSize);
res.statusCode = 302;
res.setHeader('Location', badgeUrl);
res.setHeader('Cache-Control', cacheControl(isProd, cacheResult ? 7 : 0));
res.end();
} else if (pathname === pages.api_json) {
const { pkgSize, cacheResult } = await getResultProps(query, TMPDIR);
const { publishSize, installSize, version } = pkgSize;
const result: ApiResponse = { publishSize, installSize };
res.statusCode = version === versionUnknown ? 404 : 200;
res.setHeader('Content-Type', mimeType(pathname));
res.setHeader('Cache-Control', cacheControl(isProd, cacheResult ? 7 : 0));
res.end(JSON.stringify(result));
} else {
res.setHeader('Content-Type', mimeType('*.html'));
res.setHeader('Cache-Control', cacheControl(isProd, 0));
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1 change: 1 addition & 0 deletions src/util/constants.ts
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Expand Up @@ -9,6 +9,7 @@ export const pages = {
index: '/index',
result: '/result',
badge: '/badge',
api_json: '/api.json',
};

export const containerId = 'app-container';
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