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Use promises for suggestions

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This commit is contained in:
Thaddee Tyl 2015-01-18 16:21:26 +01:00
parent 45b12a458f
commit d75133fe18
2 changed files with 107 additions and 101 deletions
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3
package.json
View File

@ -25,7 +25,8 @@
"redis": "~0.10.1",
"camp": "~13.11.9",
"semver": "~2.3.0",
"bower": "~1.3.11"
"bower": "~1.3.11",
"promise": "~6.1.0"
},
"devDependencies": {
"ass": "~0.0.6",

49
suggest.js
View File

@ -1,5 +1,6 @@
var nodeUrl = require('url');
var request = require('request');
var Promise = require('promise');
var serverSecrets;
try {
// Everything that cannot be checked in but is useful server-side
@ -24,23 +25,26 @@ var suggest = function(data, end, ask) {
}
};
// url: string
// cb: function({badges})
var github = function(url, cb) {
var badges = [];
var userRepo = url.pathname.slice(1).split('/');
var user = userRepo[0];
var repo = userRepo[1];
githubLicense(user, repo, function(err, badge) {
if (err == null) {
badges.push(badge);
}
Promise.all([
githubLicense(user, repo),
]).then(function(badges) {
cb({badges:badges});
}).catch(function(err) {
cb({badges:badges, err:err});
});
};
// user: eg, qubyte
// repo: eg, rubidium
// end: function(err, {link, badge})
var githubLicense = function(user, repo, end) {
// returns a promise of {link, badge, name}
var githubLicense = function(user, repo) {
return new Promise(function(resolve, reject) {
// Step 1: Get the repo's default branch.
var apiUrl = 'https://api.github.com/repos/' + user + '/' + repo + '';
// Using our OAuth App secret grants us 5000 req/hour
@ -53,9 +57,9 @@ var githubLicense = function(user, repo, end) {
// A special User-Agent is required:
// http://developer.github.com/v3/#user-agent-required
request(apiUrl, { headers: { 'User-Agent': 'Shields.io' } }, function(err, res, buffer) {
if (err != null) { end(err); return; }
if (err != null) { reject(err); return; }
try {
if ((+res.headers['x-ratelimit-remaining']) === 0) { end(Error('rate limited')); return; }
if ((+res.headers['x-ratelimit-remaining']) === 0) { reject(Error('rate limited')); return; }
var data = JSON.parse(buffer);
var defaultBranch = data.default_branch;
// Step 2: Get the SHA-1 hash of the branch tip.
@ -65,9 +69,9 @@ var githubLicense = function(user, repo, end) {
+ '&client_secret=' + serverSecrets.gh_client_secret;
}
request(apiUrl, { headers: { 'User-Agent': 'Shields.io' } }, function(err, res, buffer) {
if (err != null) { end(err); return; }
if (err != null) { reject(err); return; }
try {
if ((+res.headers['x-ratelimit-remaining']) === 0) { end(Error('rate limited')); return; }
if ((+res.headers['x-ratelimit-remaining']) === 0) { reject(Error('rate limited')); return; }
var data = JSON.parse(buffer);
var branchTip = data.commit.sha;
// Step 3: Get the tree at the commit.
@ -77,9 +81,9 @@ var githubLicense = function(user, repo, end) {
+ '&client_secret=' + serverSecrets.gh_client_secret;
}
request(apiUrl, { headers: { 'User-Agent': 'Shields.io' } }, function(err, res, buffer) {
if (err != null) { end(err); return; }
if (err != null) { reject(err); return; }
try {
if ((+res.headers['x-ratelimit-remaining']) === 0) { end(Error('rate limited')); return; }
if ((+res.headers['x-ratelimit-remaining']) === 0) { reject(Error('rate limited')); return; }
var data = JSON.parse(buffer);
var treeArray = data.tree;
var licenseBlob;
@ -96,7 +100,7 @@ var githubLicense = function(user, repo, end) {
}
}
// Could not find license file
if (!licenseBlob) { end(Error('no license file')); return; }
if (!licenseBlob) { reject(Error('no license file')); return; }
// Step 4: Get the license blob.
var apiUrl = 'https://api.github.com/repos/' + user + '/' + repo + '/git/blobs/' + licenseBlob;
@ -111,13 +115,13 @@ var githubLicense = function(user, repo, end) {
// https://developer.github.com/v3/media/
request(apiUrl, { headers: { 'User-Agent': 'Shields.io', 'Accept': 'appplication/vnd.github.raw' } },
function(err, res, buffer) {
if (err != null) { end(err); return; }
if (err != null) { reject(err); return; }
try {
if ((+res.headers['x-ratelimit-remaining']) === 0) { end(Error('rate limited')); return; }
if ((+res.headers['x-ratelimit-remaining']) === 0) { reject(Error('rate limited')); return; }
var license = guessLicense(buffer);
if (license) {
badgeData.text[1] = license;
end(null, {
resolve({
link: link,
badge: shieldsBadge(badgeData),
name: 'GitHub license'
@ -125,16 +129,17 @@ var githubLicense = function(user, repo, end) {
return;
} else {
// Not a recognized license
end(Error('unknown license'));
reject(Error('unknown license'));
return;
}
} catch(e) { end(e); return; }
} catch(e) { reject(e); return; }
});
} catch(e) { end(e); return; }
} catch(e) { reject(e); return; }
});
} catch(e) { end(e); return; }
} catch(e) { reject(e); return; }
});
} catch(e) { reject(e); return; }
});
} catch(e) { end(e); return; }
});
};