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Added mempool database encodings.

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This commit is contained in:
Chris Kleeschulte 2017-02-02 11:38:29 -05:00
parent 4310faa8f0
commit f07486f0f6
1 changed files with 27 additions and 186 deletions
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213
lib/services/mempool/encoding.js
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@ -23,9 +23,9 @@ Encoding.prototype.encodeMempoolAddressIndexKey = function(address, txid) {
return Buffer.concat(buffers); return Buffer.concat(buffers);
}; };
Encoding.prototype.encodeMempoolAddressIndexValue = function(buffer) { Encoding.prototype.decodeMempoolAddressIndexKey = function(buffer) {
var reader = new BufferReader(buffer); var reader = new BufferReader(buffer);
reader.read(1); reader.read(3);
var addressSize = reader.readUInt8(); var addressSize = reader.readUInt8();
var address = reader.read(addressSize).toString('utf8'); var address = reader.read(addressSize).toString('utf8');
@ -37,197 +37,38 @@ Encoding.prototype.encodeMempoolAddressIndexValue = function(buffer) {
}; };
}; };
Encoding.prototype.encodeMempoolAddressIndexValue = function(address, txid) { Encoding.prototype.encodeMempoolTransactionKey = function(txid) {
};
Encoding.prototype.encodeWalletTransactionValue = function(txid) {
return new Buffer(txid, 'hex');
};
Encoding.prototype.decodeWalletTransactionValue = function(buffer) {
return buffer.toString('hex');
};
Encoding.prototype.encodeWalletUtxoKey = function(walletId, txid, outputIndex) {
var buffers = [this.servicePrefix];
var walletIdSizeBuffer = new Buffer(1);
walletIdSizeBuffer.writeUInt8(walletId.length);
var walletIdBuffer = new Buffer(walletId, 'utf8');
buffers.push(walletIdSizeBuffer);
buffers.push(walletIdBuffer);
if(txid) {
var txidBuffer = new Buffer(txid, 'hex');
buffers.push(txidBuffer);
}
if(outputIndex !== undefined) {
var outputIndexBuffer = new Buffer(4);
outputIndexBuffer.writeUInt32BE(outputIndex);
buffers.push(outputIndexBuffer);
}
return Buffer.concat(buffers);
};
Encoding.prototype.decodeWalletUtxoKey = function(buffer) {
var reader = new BufferReader(buffer);
reader.read(1);
var walletIdSize = reader.readUInt8();
var walletId = reader.read(walletIdSize).toString('utf8');
var txid = reader.read(32).toString('hex');
var outputIndex = reader.readUInt32BE();
return {
walletId: walletId,
txid: txid,
outputIndex: outputIndex
};
};
Encoding.prototype.encodeWalletUtxoValue = function(height, satoshis, scriptBuffer) {
var heightBuffer = new Buffer(4);
heightBuffer.writeUInt32BE(height);
var satoshisBuffer = new Buffer(8);
satoshisBuffer.writeDoubleBE(satoshis);
return Buffer.concat([height, satoshisBuffer, scriptBuffer]);
};
Encoding.prototype.decodeWalletUtxoValue = function(buffer) {
var reader = new BufferReader(buffer);
var height = reader.readUInt32BE();
var satoshis = reader.readDoubleBE();
var scriptBuffer = reader.read(buffer.length - 12);
return {
height: height,
satoshis: satoshis,
script: scriptBuffer
};
};
Encoding.prototype.encodeWalletUtxoSatoshisKey = function(walletId, satoshis, txid, outputIndex) {
var buffers = [this.servicePrefix];
var walletIdSizeBuffer = new Buffer(1);
walletIdSizeBuffer.writeUInt8(walletId.length);
var walletIdBuffer = new Buffer(walletId, 'utf8');
buffers.push(walletIdSizeBuffer);
buffers.push(walletIdBuffer);
if(satoshis !== undefined) {
var satoshisBuffer = new Buffer(8);
satoshisBuffer.writeUInt32BE(satoshis);
buffers.push(satoshisBuffer);
}
if(txid) {
var txidBuffer = new Buffer(txid, 'hex');
buffers.push(txidBuffer);
}
if(outputIndex !== undefined) {
var outputIndexBuffer = new Buffer(4);
outputIndexBuffer.writeUInt32BE(outputIndex);
buffers.push(outputIndexBuffer);
}
return Buffer.concat(buffers);
};
Encoding.prototype.decodeWalletUtxoSatoshisKey = function(buffer) {
var reader = new BufferReader(buffer);
reader.read(1);
var walletIdSizeBuffer = reader.readUInt8();
var walletId = reader.read(walletIdSizeBuffer).toString('utf8');
var satoshis = reader.readDoubleBE();
var txid = reader.read(32).toString('hex');
var outputIndex = reader.readUInt32BE();
return {
walletId: walletId,
satoshis: satoshis,
txid: txid,
outputIndex: outputIndex
};
};
Encoding.prototype.encodeWalletUtxoSatoshisValue = function(height, scriptBuffer) {
var heightBuffer = new Buffer(4);
heightBuffer.writeUInt32BE(height);
return Buffer.concat([height, scriptBuffer]);
};
Encoding.prototype.decodeWalletUtxoSatoshisValue = function(buffer) {
var reader = new BufferReader(buffer);
var height = reader.readUInt32BE();
var scriptBuffer = reader.read(buffer.length - 4);
return {
height: height,
script: scriptBuffer
};
};
Encoding.prototype.encodeWalletAddressesKey = function(walletId) {
var prefix = new Buffer('00', 'hex');
var walletIdBuffer = new Buffer(walletId, 'hex');
return Buffer.concat([this.servicePrefix, prefix, walletIdBuffer]);
};
Encoding.prototype.decodeWalletAddressesKey = function(buffer) {
return buffer.slice(3).toString('hex');
};
Encoding.prototype.encodeWalletAddressesValue = function(addresses) {
var bufferList = [];
var addressesLengthBuffer = new Buffer(4);
addressesLengthBuffer.writeUInt32BE(addresses.length);
bufferList.push(addressesLengthBuffer);
for(var i = 0; i < addresses.length; i++) {
var addressSizeBuffer = new Buffer(1);
addressSizeBuffer.writeUInt8(addresses[i].length);
bufferList.push(addressSizeBuffer);
bufferList.push(new Buffer(addresses[i], 'utf8'));
}
return Buffer.concat(bufferList);
};
Encoding.prototype.decodeWalletAddressesValue = function(buffer) {
var reader = new BufferReader(buffer);
var addressesLength = reader.readUInt32BE();
var addresses = [];
var addressSize = 0;
for(var i = 0; i < addressesLength.length; i++) {
addressSize = reader.readUInt8(addressSize);
addresses.push(reader.read(addressSize).toString('utf8'));
}
return addresses;
};
Encoding.prototype.encodeWalletBalanceKey = function(walletId) {
var prefix = new Buffer('01', 'hex'); var prefix = new Buffer('01', 'hex');
var walletIdBuffer = new Buffer(walletId, 'hex'); var buffers = [this.servicePrefix, prefix];
return Buffer.concat([this.servicePrefix, prefix, walletIdBuffer]); var txidBuffer = new Buffer(txid, 'hex');
buffers.push(txidBuffer);
return Buffer.concat(buffers);
}; };
Encoding.prototype.decodeWalletBalanceKey = function(buffer) { Encoding.prototype.decodeMempoolTransactionKey = function(buffer) {
return buffer.slice(3).toString('hex'); return buffer.slice(4).toString('hex');
}; };
Encoding.prototype.encodeWalletBalanceValue = function(balance) { Encoding.prototype.encodeMempoolTransactionValue = function(transaction) {
var balanceBuffer = new Buffer(8); var inputValues = transaction.__inputValues || [];
balanceBuffer.writeUInt32BE(balance); var inputValuesBuffer = new Buffer(8 * inputValues.length);
return balanceBuffer; for(var i = 0; i < inputValues.length; i++) {
inputValuesBuffer.writeDoubleBE(inputValues[i], i * 8);
}
var inputValuesLengthBuffer = new Buffer(2);
inputValuesLengthBuffer.writeUInt16BE(inputValues.length * 8);
return new Buffer.concat([inputValuesLengthBuffer, inputValuesBuffer, transaction.toBuffer()]);
}; };
Encoding.prototype.decodeWalletBalanceValue = function(buffer) { Encoding.prototype.decodeMempoolTransactionValue = function(buffer) {
var reader = new BufferReader(buffer); var inputValues = [];
var balance = reader.readDoubleBE(); var inputValuesLength = buffer.readUInt16BE();
for(var i = 0; i < inputValuesLength / 8; i++) {
return balance; inputValues.push(buffer.readDoubleBE(i * 8 + 2));
}
var transaction = new bitcore.Transaction(buffer.slice(inputValues.length * 8 + 2));
transaction.__inputValues = inputValues;
return transaction;
}; };
module.exports = Encoding; module.exports = Encoding;