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server.js
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server.js
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const ASSERT = require("assert");
const PATH = require("path");
const FS = require("fs");
const URL = require("url");
const EXPRESS = require("express");
const SPAWN = require("child_process").spawn;
var app = EXPRESS();
app.use(EXPRESS.bodyParser());
app.post("/api/broadcast", function(req, res) {
if (req.body && req.body.payload) {
var payload = false;
try {
payload = JSON.parse(req.body.payload);
} catch(err) {
console.error(err.stack);
res.writeHead(500);
res.end("Error parsing payload!");
return;
}
if (payload && payload.name === "RepositoryNewTag") {
scanRedeploy(payload.data, function(err) {
if (err) return console.error(err.stack);
// Ignore as we already returned.
});
}
res.send("OK");
return;
}
res.writeHead(400);
res.end();
});
app.listen(9998);
function scanRedeploy(data, callback) {
try {
console.log("Scanning programs for events to relay:", data);
var programsPath = "/pinf/programs";
FS.readdirSync(programsPath).forEach(function(programId) {
var descriptorPath = PATH.join(programsPath, programId, "program.json");
if (FS.existsSync(descriptorPath)) {
console.log(" " + descriptorPath);
// TODO: Use pinf module to load & parse program descriptor.
var descriptor = JSON.parse(FS.readFileSync(descriptorPath));
if (descriptor && descriptor.config && descriptor.config["github.com/sourcemint/node/0"]) {
var config = descriptor.config["github.com/sourcemint/node/0"];
if (config.on && config.on["RepositoryNewTag"]) {
config = config.on["RepositoryNewTag"];
ASSERT(typeof config.do === "string", "`do` not set for '" + descriptorPath + " ~ config[\"github.com/sourcemint/node/0\"].on.RepositoryNewTag'!");
ASSERT(typeof config.match === "object", "`match` not set for '" + descriptorPath + " ~ config[\"github.com/sourcemint/node/0\"].on.RepositoryNewTag'!");
ASSERT(typeof config.match.repository === "string", "`repository` not set for '" + descriptorPath + " ~ config[\"github.com/sourcemint/node/0\"].on.RepositoryNewTag.match'!");
var parsedUrl = URL.parse(data.repository);
if (config.match.repository === parsedUrl.hostname + parsedUrl.pathname) {
console.log(" Running event hook ...");
call(config.do, PATH.dirname(descriptorPath), function(err) {
if (err) return console.error(err.stack);
});
}
}
}
}
});
} catch(err) {
return callback(err);
}
}
function call(command, programPath, callback) {
// TODO: If already redeploying cancel previous and run this one.
// TODO: Spawn child, change ownership and then run script.
console.log("Running: " + command);
var command = command.split(" ");
var proc = SPAWN(command.shift(), command, {
cwd: programPath
});
proc.on("error", function(err) {
callback(err);
});
proc.stdout.on("data", function(data) {
process.stdout.write(data.toString().replace(/\\n/g, "\n"));
});
var stderr = "";
proc.stderr.on("data", function(data) {
stderr += data.toString();
process.stderr.write(data.toString());
});
proc.on("exit", function(code) {
if (code !== 0) {
var err = new Error("Error: " + stderr);
return callback(err);
}
callback(null);
});
}