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Copy pathindex.js
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196 lines (173 loc) · 5.92 KB
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/**
* Start and stop geth from Node.js.
* @author Jack Peterson (jack@tinybike.net)
*/
"use strict";
var fs = require("fs");
var join = require("path").join;
var cp = require("child_process");
function copy(obj) {
if (null === obj || "object" !== typeof obj) return obj;
var cc = obj.constructor();
for (var attr in obj) {
if (obj.hasOwnProperty(attr)) cc[attr] = obj[attr];
}
return cc;
}
var noop = function () {};
module.exports = {
version: "0.4.0",
debug: false,
proc: null,
flags: null,
options: null,
datadir: null,
network: null,
bin: null,
configured: false,
persist: false,
configure: function (options) {
this.bin = options.geth_bin || "geth";
this.persist = options.persist || false;
var f = copy(options.flags || options);
this.network = f.networkid;
f.datadir = f.datadir || join(process.env.HOME, ".ethereum-" + f.networkid);
if (options.symlink) {
if (fs.existsSync(options.symlink)) fs.unlinkSync(options.symlink);
fs.symlinkSync(f.datadir, options.symlink);
f.datadir = options.symlink;
}
this.datadir = f.datadir;
this.syncmode = f.syncmode;
this.flags = [];
var rpc = false;
var rpcport = false;
var rpcapi = false;
var ws = false;
var wsport = false;
var wsapi = false;
var unlock = false;
var password = false;
if (options.account) {
this.flags = this.flags.concat([
"--etherbase", options.account,
"--unlock", options.account,
"--password", join(this.datadir, ".password")
]);
unlock = true;
password = true;
}
if (f && f.constructor === Object) {
for (var flag in f) {
if (!f.hasOwnProperty(flag)) continue;
this.flags.push("--" + flag);
if (f[flag]) {
if (f[flag].constructor === Array) {
this.flags.push(f[flag].join(' '));
} else {
this.flags.push(f[flag]);
}
}
if (flag === "rpc") rpc = true;
if (flag === "rpcport") rpcport = true;
if (flag === "rpcapi") rpcapi = true;
if (flag === "ws") ws = true;
if (flag === "wsport") wsport = true;
if (flag === "wsapi") wsapi = true;
if (flag === "unlock") unlock = true;
if (flag === "password") password = true;
}
}
if ((rpcport || rpcapi) && !rpc) this.flags.push("--rpc");
if ((wsport || wsapi) && !ws) this.flags.push("--ws");
if (unlock && !password) {
this.flags = this.flags.concat([
"--password", join(this.datadir, ".password")
]);
}
this.configured = true;
return this.flags;
},
listen: function (stream, label, listener) {
if (label && label.constructor === Function && !listener) {
listener = label;
label = null;
}
label = label || "data";
listener = listener || noop;
if (this.proc !== null) {
this.proc[stream]._events[label] = listener;
}
},
stdout: function (label, listener) {
this.listen("stdout", label, listener);
},
stderr: function (label, listener) {
this.listen("stderr", label, listener);
},
trigger: noop,
start: function (flags, listeners, trigger) {
var self = this;
if (this.configured) {
if (listeners && listeners.constructor === Function && !trigger) {
trigger = listeners;
listeners = null;
}
if (flags && flags.constructor === Function && !listeners) {
trigger = flags;
flags = this.flags;
}
listeners = listeners || {};
this.trigger = trigger || noop;
if (!this.persist && !process._events.exit) {
process.on("exit", function () {
if (self.proc !== null) self.stop();
});
}
if (!listeners.stdout) {
listeners.stdout = function (data) {
if (self.debug) process.stdout.write(data);
};
}
if (!listeners.stderr) {
listeners.stderr = function (data) {
if (self.debug) process.stdout.write(data);
if (data.toString().indexOf("HTTP endpoint opened") > -1) {
self.trigger(null, self.proc);
}
};
}
if (!listeners.close) {
listeners.close = function (code) {
if (code !== 2 && code !== 0) {
self.trigger(new Error("geth closed with code " + code));
}
};
}
this.proc = cp.spawn(this.bin, flags);
this.proc.stdout.on("data", listeners.stdout);
this.proc.stderr.on("data", listeners.stderr);
this.proc._events.close = listeners.close;
return this.proc;
}
return this.start(this.configure(flags), listeners, trigger);
},
stop: function (callback) {
var self = this;
callback = callback || noop;
if (this.proc !== null) {
var closed = function (code) {
self.configured = false;
if (self.proc !== null) {
self.proc._events.close = null;
}
self.proc = null;
callback(null, code);
};
this.proc.on("close", closed);
this.proc.kill("SIGINT");
} else {
callback();
}
}
};