From 727dcf01767e46e766b3fdcea0a8ab3a93327f66 Mon Sep 17 00:00:00 2001
From: dqy <1016751306@qq.com>
Date: Fri, 20 Oct 2023 16:57:28 +0800
Subject: [PATCH] =?UTF-8?q?feat:=20=E7=BC=96=E5=86=99=E4=B8=AD=E5=BF=83?=
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---
 src/server.py | 44 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/src/server.py b/src/server.py
index e69de29..5a25696 100644
--- a/src/server.py
+++ b/src/server.py
@@ -0,0 +1,44 @@
+from fastapi import FastAPI
+from fastapi.encoders import jsonable_encoder
+from fastapi.responses import JSONResponse
+from typing import Tuple, Callable
+
+app = FastAPI()
+
+@app.get("/server/get_node")
+async def get_node(ip: str) -> int:
+    '''
+    中心服务器与节点交互, 节点发送ip, 中心服务器接收ip存入数据库并将ip转换为int作为节点id返回给节点
+    params:
+    ip: node ip
+    return:
+    id: ip按点分割成四部分, 每部分转二进制后拼接再转十进制作为节点id
+    '''
+    # ip存入数据库, id = hash(int(ip))
+
+    ip_parts = ip.split(".")
+    ip_int = 0
+    for i in range(4):
+        ip_int += int(ip_parts[i]) << (24 - (8 * i))
+    return ip_int
+
+@app.get("/server/delete_node")
+async def delete_node(ip: str) -> None:
+    # 按照节点ip遍历数据库, 删除该行数据
+
+@app.post("/server/send_nodes_list")
+async def send_nodes_list(count: int) -> JSONResponse:
+    '''
+    中心服务器与客户端交互, 客户端发送所需节点个数, 中心服务器从数据库中顺序取出节点封装成json格式返回给客户端
+    params:
+    count: 所需节点个数
+    return:
+    JSONResponse: {id: ip,...}
+    '''
+    nodes_list = {}
+    for i in range(count):
+        # 访问数据库取出节点数据
+        node = (id, ip)
+        nodes_list[node[0]] = node[1]
+    json_result = jsonable_encoder(nodes_list)
+    return JSONResponse(content=json_result)
\ No newline at end of file