Official Go implementation of the Ethereum protocol
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go-ethereum/main.js

436 lines
13 KiB

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(function(window) {
function isPromise(o) {
return o instanceof Promise
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}
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function flattenPromise (obj) {
if (obj instanceof Promise) {
return Promise.resolve(obj);
}
if (obj instanceof Array) {
return new Promise(function (resolve) {
var promises = obj.map(function (o) {
return flattenPromise(o);
});
return Promise.all(promises).then(function (res) {
for (var i = 0; i < obj.length; i++) {
obj[i] = res[i];
}
resolve(obj);
});
});
}
if (obj instanceof Object) {
return new Promise(function (resolve) {
var keys = Object.keys(obj);
var promises = keys.map(function (key) {
return flattenPromise(obj[key]);
});
return Promise.all(promises).then(function (res) {
for (var i = 0; i < keys.length; i++) {
obj[keys[i]] = res[i];
}
resolve(obj);
});
});
}
return Promise.resolve(obj);
};
var ethMethods = function () {
var blockCall = function (args) {
return typeof args[0] === "string" ? "blockByHash" : "blockByNumber";
};
var transactionCall = function (args) {
return typeof args[0] === "string" ? 'transactionByHash' : 'transactonByNumber';
};
var uncleCall = function (args) {
return typeof args[0] === "string" ? 'uncleByHash' : 'uncleByNumber';
};
var methods = [
{ name: 'balanceAt', call: 'balanceAt' },
{ name: 'stateAt', call: 'stateAt' },
{ name: 'countAt', call: 'countAt'},
{ name: 'codeAt', call: 'codeAt' },
{ name: 'transact', call: 'transact' },
{ name: 'call', call: 'call' },
{ name: 'block', call: blockCall },
{ name: 'transaction', call: transactionCall },
{ name: 'uncle', call: uncleCall },
{ name: 'compile', call: 'compile' }
];
return methods;
};
var ethProperties = function () {
return [
{ name: 'coinbase', getter: 'coinbase', setter: 'setCoinbase' },
{ name: 'listening', getter: 'listening', setter: 'setListening' },
{ name: 'mining', getter: 'mining', setter: 'setMining' },
{ name: 'gasPrice', getter: 'gasPrice' },
{ name: 'accounts', getter: 'accounts' },
{ name: 'peerCount', getter: 'peerCount' },
{ name: 'defaultBlock', getter: 'defaultBlock', setter: 'setDefaultBlock' },
{ name: 'number', getter: 'number'}
];
};
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var dbMethods = function () {
return [
{ name: 'put', call: 'put' },
{ name: 'get', call: 'get' },
{ name: 'putString', call: 'putString' },
{ name: 'getString', call: 'getString' }
];
};
var shhMethods = function () {
return [
{ name: 'post', call: 'post' },
{ name: 'newIdentity', call: 'newIdentity' },
{ name: 'haveIdentity', call: 'haveIdentity' },
{ name: 'newGroup', call: 'newGroup' },
{ name: 'addToGroup', call: 'addToGroup' }
];
};
var ethWatchMethods = function () {
var newFilter = function (args) {
return typeof args[0] === 'string' ? 'newFilterString' : 'newFilter';
};
return [
{ name: 'newFilter', call: newFilter },
{ name: 'uninstallFilter', call: 'uninstallFilter' },
{ name: 'getMessages', call: 'getMessages' }
];
};
var shhWatchMethods = function () {
return [
{ name: 'newFilter', call: 'shhNewFilter' },
{ name: 'uninstallFilter', call: 'shhUninstallFilter' },
{ name: 'getMessage', call: 'shhGetMessages' }
];
};
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var setupMethods = function (obj, methods) {
methods.forEach(function (method) {
obj[method.name] = function () {
return flattenPromise(Array.prototype.slice.call(arguments)).then(function (args) {
var call = typeof method.call === "function" ? method.call(args) : method.call;
return {call: call, args: args};
}).then(function (request) {
return new Promise(function (resolve, reject) {
web3.provider.send(request, function (result) {
if (result || typeof result === "boolean") {
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resolve(result);
return;
}
reject(result);
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});
});
}).catch(function( err) {
console.error(err);
});
};
});
};
var setupProperties = function (obj, properties) {
properties.forEach(function (property) {
var proto = {};
proto.get = function () {
return new Promise(function(resolve, reject) {
web3.provider.send({call: property.getter}, function(result) {
resolve(result);
});
});
};
if (property.setter) {
proto.set = function (val) {
return flattenPromise([val]).then(function (args) {
return new Promise(function (resolve) {
web3.provider.send({call: property.setter, args: args}, function (result) {
if (result) {
resolve(result);
} else {
reject(result);
}
});
});
}).catch(function (err) {
console.error(err);
});
}
}
Object.defineProperty(obj, property.name, proto);
});
};
var web3 = {
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_callbacks: {},
_events: {},
providers: {},
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toHex: function(str) {
var hex = "";
for(var i = 0; i < str.length; i++) {
var n = str.charCodeAt(i).toString(16);
hex += n.length < 2 ? '0' + n : n;
}
return hex;
},
toAscii: function(hex) {
// Find termination
var str = "";
var i = 0, l = hex.length;
for(; i < l; i+=2) {
var code = hex.charCodeAt(i)
if(code == 0) {
break;
}
str += String.fromCharCode(parseInt(hex.substr(i, 2), 16));
}
return str;
},
toDecimal: function (val) {
return parseInt(val, 16);
},
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fromAscii: function(str, pad) {
pad = pad === undefined ? 32 : pad;
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var hex = this.toHex(str);
while(hex.length < pad*2)
hex += "00";
return hex
},
eth: {
prototype: Object(),
watch: function (params) {
return new Filter(params, ethWatch);
},
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},
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db: {
prototype: Object()
},
shh: {
prototype: Object(),
watch: function (params) {
return new Filter(params, shhWatch);
}
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},
on: function(event, id, cb) {
if(web3._events[event] === undefined) {
web3._events[event] = {};
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}
web3._events[event][id] = cb;
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return this
},
off: function(event, id) {
if(web3._events[event] !== undefined) {
delete web3._events[event][id];
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}
return this
},
trigger: function(event, id, data) {
var callbacks = web3._events[event];
if (!callbacks || !callbacks[id]) {
return;
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}
var cb = callbacks[id];
cb(data);
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},
};
var eth = web3.eth;
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setupMethods(eth, ethMethods());
setupProperties(eth, ethProperties());
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setupMethods(web3.db, dbMethods());
setupMethods(web3.shh, shhMethods());
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var ethWatch = {
changed: 'changed'
};
setupMethods(ethWatch, ethWatchMethods());
var shhWatch = {
changed: 'shhChanged'
};
setupMethods(shhWatch, shhWatchMethods());
var ProviderManager = function() {
this.queued = [];
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this.polls = [];
this.ready = false;
this.provider = undefined;
this.id = 1;
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var self = this;
var poll = function () {
if (self.provider && self.provider.poll) {
self.polls.forEach(function (data) {
data.data._id = self.id;
self.id++;
self.provider.poll(data.data, data.id);
});
}
setTimeout(poll, 12000);
};
poll();
};
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ProviderManager.prototype.send = function(data, cb) {
data._id = this.id;
if (cb) {
web3._callbacks[data._id] = cb;
}
data.args = data.args || [];
this.id++;
if(this.provider !== undefined) {
this.provider.send(data);
} else {
console.warn("provider is not set");
this.queued.push(data);
}
};
ProviderManager.prototype.set = function(provider) {
if(this.provider !== undefined && this.provider.unload !== undefined) {
this.provider.unload();
}
this.provider = provider;
this.ready = true;
};
ProviderManager.prototype.sendQueued = function() {
for(var i = 0; this.queued.length; i++) {
// Resend
this.send(this.queued[i]);
}
};
ProviderManager.prototype.installed = function() {
return this.provider !== undefined;
};
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ProviderManager.prototype.startPolling = function (data, pollId) {
if (!this.provider || !this.provider.poll) {
return;
}
this.polls.push({data: data, id: pollId});
};
ProviderManager.prototype.stopPolling = function (pollId) {
for (var i = this.polls.length; i--;) {
var poll = this.polls[i];
if (poll.id === pollId) {
this.polls.splice(i, 1);
}
}
};
web3.provider = new ProviderManager();
web3.setProvider = function(provider) {
provider.onmessage = messageHandler;
web3.provider.set(provider);
web3.provider.sendQueued();
};
var Filter = function(options, impl) {
this.impl = impl;
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this.callbacks = [];
var self = this;
this.promise = impl.newFilter(options);
this.promise.then(function (id) {
self.id = id;
web3.on(impl.changed, id, self.trigger.bind(self));
web3.provider.startPolling({call: impl.changed, args: [id]}, id);
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});
};
Filter.prototype.arrived = function(callback) {
this.changed(callback);
}
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Filter.prototype.changed = function(callback) {
var self = this;
this.promise.then(function(id) {
self.callbacks.push(callback);
});
};
Filter.prototype.trigger = function(messages) {
for(var i = 0; i < this.callbacks.length; i++) {
this.callbacks[i].call(this, messages);
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}
};
Filter.prototype.uninstall = function() {
var self = this;
this.promise.then(function (id) {
self.impl.uninstallFilter(id);
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web3.provider.stopPolling(id);
web3.off(impl.changed, id);
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});
};
Filter.prototype.messages = function() {
var self = this;
return this.promise.then(function (id) {
return self.impl.getMessages(id);
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});
};
function messageHandler(data) {
if(data._event !== undefined) {
web3.trigger(data._event, data._id, data.data);
return;
}
if(data._id) {
var cb = web3._callbacks[data._id];
if (cb) {
cb.call(this, data.data)
delete web3._callbacks[data._id];
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}
}
}
/*
// Install default provider
if(!web3.provider.installed()) {
var sock = new web3.WebSocket("ws://localhost:40404/eth");
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web3.setProvider(sock);
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}
*/
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window.web3 = web3;
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})(this);