148 lines
3.2 KiB
JavaScript
148 lines
3.2 KiB
JavaScript
'use strict';
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require('classtool');
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function spec() {
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var TIMESTAMP_ROOT = 'b-ts-'; // b-ts-<ts> => <hash>
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var PREV_ROOT = 'b-prev-'; // b-prev-<hash> => <prev_hash> (0 if orphan)
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/**
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* Module dependencies.
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*/
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var RpcClient = require('bitcore/RpcClient').class(),
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util = require('bitcore/util/util'),
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levelup = require('levelup'),
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BitcoreBlock= require('bitcore/Block').class(),
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config = require('../config/config');
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var BlockDb = function() {
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this.db = levelup(config.leveldb + '/blocks');
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};
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BlockDb.prototype.drop = function(cb) {
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var self = this;
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var path = config.leveldb + '/blocks';
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self.db.close(function() {
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require('leveldown').destroy(path, function () {
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self.db = levelup(path);
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return cb();
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});
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});
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};
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BlockDb.prototype.add = function(b, cb) {
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var self = this;
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if (!b.hash) return cb(new Error('no Hash at Block.save'));
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var time_key = TIMESTAMP_ROOT +
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( b.timestamp || Math.round(new Date().getTime() / 1000) );
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self.db.batch()
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.put(time_key, b.hash)
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.put(PREV_ROOT + b.hash, b.prev_block)
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.write(cb);
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};
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BlockDb.prototype.setOrphan = function(hash, cb) {
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var self = this;
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var k = PREV_ROOT + hash;
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self.db.get(k, function (err,oldPrevHash) {
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if (err || !oldPrevHash) return cb(err);
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self.db.put(PREV_ROOT + hash, 0, function() {
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return cb(err, oldPrevHash);
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});
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});
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// We keep the block in TIMESTAMP_ROOT
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};
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//mainly for testing
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BlockDb.prototype.setPrev = function(hash, prevHash, cb) {
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this.db.put(PREV_ROOT + hash, prevHash, function(err) {
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return cb(err);
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});
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};
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//mainly for testing
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BlockDb.prototype.getPrev = function(hash, cb) {
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this.db.get(PREV_ROOT + hash, function(err,val) {
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return cb(err,val);
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});
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};
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BlockDb.prototype.countNotOrphan = function(cb) {
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var c = 0;
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this.db.createReadStream({start: PREV_ROOT, end: PREV_ROOT + '~' })
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.on('data', function (data) {
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if (data.value !== 0) c++;
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})
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.on('error', function (err) {
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return cb(err);
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})
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.on('end', function () {
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return cb(null);
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});
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};
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BlockDb.prototype.has = function(hash, cb) {
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var self = this;
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var k = PREV_ROOT + hash;
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self.db.get(k, function (err,val) {
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var ret;
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if (err && err.notFound) {
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err = null;
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ret = false;
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}
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if (typeof val !== 'undefined') {
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ret = true;
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}
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return cb(err, ret);
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});
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};
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BlockDb.prototype.fromHashWithInfo = function(hash, cb) {
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var rpc = new RpcClient(config.bitcoind);
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rpc.getBlock(hash, function(err, info) {
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// Not found?
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if (err && err.code === -5) return cb();
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if (err) return cb(err);
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info.reward = BitcoreBlock.getBlockValue(info.height) / util.COIN ;
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return cb(null, {
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hash: hash,
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info: info.result,
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});
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});
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};
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BlockDb.blockIndex = function(height, cb) {
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var rpc = new RpcClient(config.bitcoind);
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rpc.getBlockHash(height, function(err, bh){
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if (err) return cb(err);
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cb(null, { blockHash: bh.result });
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});
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};
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return BlockDb;
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}
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module.defineClass(spec);
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