GetChanInfo - 获取通道信息
GetChanInfo返回指定通道的最新信息。通道ID为8字节整数。
gRPC请求 - ChanInfoRequest
字段如下:
- chan_id:通道的ID, uint64,前3个字节表示区块高度,接下来3个字节表示 在区块内的索引,最后的2个字节表示通道的输出索引
gRPC响应 - ChannelEdge
字段如下:
- channel_id:通道ID, uint64
- chan_point: string
- last_update :uint32
- node1_pub: string
- node2_pub: string
- capacity: int64
- node1_policy: RoutingPolicy
- node2_policy: RoutingPolicy
示例代码
Python示例代码
>>> import codecs, grpc, os
>>> import rpc_pb2 as ln, rpc_pb2_grpc as lnrpc
>>> macaroon = codecs.encode(open('LND_DIR/data/chain/bitcoin/simnet/admin.macaroon', 'rb').read(), 'hex')
>>> os.environ['GRPC_SSL_CIPHER_SUITES'] = 'HIGH+ECDSA'
>>> cert = open('LND_DIR/tls.cert', 'rb').read()
>>> ssl_creds = grpc.ssl_channel_credentials(cert)
>>> channel = grpc.secure_channel('localhost:10009', ssl_creds)
>>> stub = lnrpc.LightningStub(channel)
>>> request = ln.ChanInfoRequest(
chan_id=<uint64>,
)
>>> response = stub.GetChanInfo(request)
>>> print(response)
{
"channel_id": <uint64>,
"chan_point": <string>,
"last_update": <uint32>,
"node1_pub": <string>,
"node2_pub": <string>,
"capacity": <int64>,
"node1_policy": <RoutingPolicy>,
"node2_policy": <RoutingPolicy>,
}
JavaScript示例代码
> var fs = require('fs');
> var grpc = require('grpc');
> var lnrpc = grpc.load('rpc.proto').lnrpc;
> process.env.GRPC_SSL_CIPHER_SUITES = 'HIGH+ECDSA'
> var lndCert = fs.readFileSync('LND_DIR/tls.cert');
> var sslCreds = grpc.credentials.createSsl(lndCert);
> var macaroonCreds = grpc.credentials.createFromMetadataGenerator(function(args, callback) {
var macaroon = fs.readFileSync("LND_DIR/data/chain/bitcoin/simnet/admin.macaroon").toString('hex');
var metadata = new grpc.Metadata()
metadata.add('macaroon', macaroon);
callback(null, metadata);
});
> var creds = grpc.credentials.combineChannelCredentials(sslCreds, macaroonCreds);
> var lightning = new lnrpc.Lightning('localhost:10009', creds);
> var request = {
chan_id: <uint64>,
}
> lightning.getChanInfo(request, function(err, response) {
console.log(response);
})
{
"channel_id": <uint64>,
"chan_point": <string>,
"last_update": <uint32>,
"node1_pub": <string>,
"node2_pub": <string>,
"capacity": <int64>,
"node1_policy": <RoutingPolicy>,
"node2_policy": <RoutingPolicy>,
}