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怎么解析关于Filecoin的四大实现

更新时间:2023-11-10

Filecoin四大实现解析

概述

Filecoin是一个点对点的存储网络,用于存储和检索数据,而不依赖于传统的服务器集群。Filecoin通过激励机制来鼓励网络参与者提供硬盘空间和带宽,以服务网络并获得代币奖励。Filecoin有四种实现方式,分别是Lotus、go-filecoin、rust-filecoin和Forest。下面将对这四种实现进行详细解析。

Lotus

Lotus是Filecoin官方推荐的Go语言实现的节点实现,它是目前生态最丰富、最活跃的Filecoin客户端之一。Lotus的代码是开源的,可以在Github上找到。以下是使用Lotus查询链的示例代码:

import (
    "context"
    "fmt"

    "github.com/filecoin-project/go-jsonrpc"
    "github.com/filecoin-project/lotus/api"
    "github.com/filecoin-project/lotus/rpc"
)

func main() {
    ctx :=context.Background()
    c, err :=rpc.DialContext(ctx, "ws://YOUR_NODE_IP:YOUR_NODE_PORT/rpc/v0")
    if err !=nil {
        panic(err)
    }
    defer c.Close()

    var height int64
    if err :=c.Call(ctx, &height, "ChainHead.Height"); err !=nil {
        panic(err)
    }

    fmt.Printf("Current Chain Height: %d", height)
}
    

go-filecoin

go-filecoin是另一种使用Go语言实现的Filecoin节点实现,它完全符合Filecoin规范,并且包含完整的CLI界面。go-filecoin具有可扩展性和互操作性,并已被广泛测试。以下是用go-filecoin创建存储订单的代码示例:

import (
    "context"
    "fmt"

    "github.com/filecoin-project/go-jsonrpc"
    "github.com/filecoin-project/go-state-types/abi"
    "github.com/filecoin-project/lotus/api"
    "github.com/filecoin-project/lotus/chain/types"
)

func main() {
    ctx :=context.Background()
    c, err :=jsonrpc.NewClient(ctx, "ws://YOUR_NODE_IP:YOUR_NODE_PORT/rpc/v0")
    if err !=nil {
        panic(err)
    }
    var order api.DealID
    err=c.Call(ctx, &order, "ClientStartDeal", api.StartDealParams{
        Data: api.DataCID{"/ipfs/QmdF5P81e6dGqwKvUYFLfwnUPzeVxBeeEJxsSxJbsFsXq6"},
        Wallet: "f1e30212-20ac-47e1-bc11-c2f93d37e753",
        Miner: "f107453",
        EpochPrice: abi.NewTokenAmount(2500000000),
        MinBlocksDuration: uint64(5400),
        FastRetrieval: true,
        VerifiedDeal: false,
        ClientMarketBalance: abi.NewTokenAmount(50000000000000000),
        ProviderCollateral: abi.NewTokenAmount(100000000000),
        DealStartEpoch: abi.ChainEpoch(53600),
    })
    if err !=nil {
        panic(err)
    }
    fmt.Printf("Deal ID: %d", order)
}
    

rust-filecoin

rust-filecoin是另一种Filecoin节点实现,它使用Rust语言编写,提供了高速和安全的实现。rust-filecoin目前仍处于开发阶段,但仍可用于开发和测试目的。以下是使用rust-filecoin获取钱包余额的代码示例:

use jsonrpc::{client::Client, serde_json::Value};
use serde::{Deserialize, Serialize};

#[derive(Debug, Serialize, Deserialize)]
struct WalletBalanceRequest {
    jsonrpc: String,
    id: usize,
    method: String,
    params: (String,),
}

#[derive(Debug, Serialize, Deserialize)]
struct WalletBalanceResponse {
    jsonrpc: String,
    id: usize,
    result: String,
}

fn main() {
    let mut client=Client::new("http://YOUR_NODE_IP:YOUR_NODE_PORT/rpc/v0").unwrap();
    let req=WalletBalanceRequest {
        jsonrpc: "2.0".to_string(),
        id: 1,
        method: "Filecoin.WalletBalance".to_string(),
        params: (
            "f1i5yyfnru3ueiphhivdxeexdsxs2k2k2ixmr7gi".to_string(),
        ),
    };
    let res: WalletBalanceResponse=client.call_method(&req);
    println!("{:?}", res);
}
    

Forest

Forest是另一种使用Rust语言实现的Filecoin节点实现,它专注于高速和可靠性。Forest的代码已经开源,并已被证明是值得信赖的Filecoin客户端之一。以下是使用Forest发送消息到Filecoin链上的代码示例:

use filecoin_signer::signature::SignatureType;
use forest_address::{Address, Network};
use forest_cid::Cid;
use forest_ipld::Ipld;
use forest_message::{
    Message, UnsignedMessage, SignedMessage, NewMessage, TestVector,
    UnsignedMessageAPI, SignedMessageAPI,
};
use forest_crypto::Signature;
use hex_literal::hex;
use num_bigint::BigInt;
use std::{str::FromStr, time::{SystemTime, UNIX_EPOCH}};

fn send_message() {
    let nonce: u64=1;
    let receiver=Address::from_str("f3wzwxsmow4t7b5ew7hpl5gcdz2kcntbaslcxczoeamvnqekrxrgkm6ys45todct2qwnt25cu3pxnuoe42ixmq==").unwrap();
    let value: BigInt=100.into();
    let gas_limit: i64=250000;
    let gas_fee_cap=BigInt::from(1000000000);
    let gas_premium=BigInt::from(500000000);
    let mut message=UnsignedMessageAPI {
        Version: 1,
        To: Some(receiver.clone()),
        From: Some(Address::from_vec(hex!("7163d00ead7af31eb27cd9d6cecbe8c9a676826a")).unwrap()),
        Nonce: Some(nonce),
        Value: Some(value),
        GasLimit: Some(gas_limit),
        GasFeeCap: Some(gas_fee_cap),
        GasPremium: Some(gas_premium),
        Method: Some(3),
        Params: Some(
            Ipld::List(vec![]),
        ),
    };
    let epoch=SystemTime::now()
        .duration_since(UNIX_EPOCH)
        .unwrap()
        .as_micros();
    let message_cids=message.cid()?;
    let signature=Signature::new_secp256k1(hex!["1a2b3c4d5e6f7a2b3c4d5"].to_vec(), SignatureType::BLS).unwrap();
    let signed_message=SignedMessageAPI {
        Message: message.into(),
        Signature: signature.to_bytes().to_vec(),
    };
    let serialized_signed_message=&signed_message.to_bytes()?;
    let final_cid=Cid::new_v1(Cid::Blake2b256, serialized_signed_message);
    println!("Final CID: {}", final_cid);
}
    

通过对以上四种Filecoin节点实现的介绍和示例代码的解释,我们可以更深入地理解它们各自的特点和功能,这有助于选择适合自己的Filecoin客户端实现。