89 lines
2.5 KiB
Markdown
89 lines
2.5 KiB
Markdown
# ip2region golang 查询客户端实现
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# 使用方式
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### package 获取
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```bash
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go get github.com/lionsoul2014/ip2region/binding/golang
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```
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### API 使用 Demo
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```golang
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import (
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"fmt"
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"github.com/lionsoul2014/ip2region/binding/golang/xdb"
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"time"
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)
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func main() {
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var dbPath = "ip2region.xdb file path"
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searcher, err := xdb.New(dbPath)
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if err != nil {
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fmt.Printf("failed to create searcher: %s\n", err.Error())
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return
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}
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defer searcher.Close()
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// do the search
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var ip = "1.2.3.4"
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var tStart = time.Now()
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region, err := searcher.SearchByStr(ip)
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if err != nil {
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fmt.Printf("failed to SearchIP(%s): %s\n", ip, err)
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return
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}
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fmt.Printf("{region: %s, took: %s}\n", region, time.Since(tStart))
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}
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```
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# 编译测试程序
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通过如下方式编译得到 searcher 可执行程序：
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```bash
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# 切换到 golang binding 根目录
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go build -o searcher
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```
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# 查询测试
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通过 `searcher search` 命令来测试 ip2region.xdb 的查询：
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```
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➜ golang git:(v2.0_xdb) ✗ ./searcher search
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dbmaker test [command options]
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options:
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--db string ip2region binary xdb file path
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```
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例如：使用默认的 data/ip2region.xdb 进行查询测试
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```bash
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➜ golang git:(v2.0_xdb) ✗ ./searcher search --db=../../data/ip2region.xdb
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ip2region 2.0 searcher test program, type `quit` to exit
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ip2region>> 1.2.3.4
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{region:美国|0|华盛顿|0|谷歌, took:101.57µs}
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```
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输入 ip 地址进行查询即可，输入 quit 退出测试程序。
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# bench 测试
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通过 `searcher bench` 命令来进行自动 bench 测试，一方便得到大量查询的效率，一方便确保程序和xdb文件都没有错误：
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```bash
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➜ golang git:(v2.0_xdb) ✗ ./searcher bench
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searcher bench [command options]
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options:
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--db string ip2region binary xdb file path
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--src string source ip text file path
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```
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例如：通过 data/ip2region.xdb 和 data/ip.merge.txt 进行 bench 测试：
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```bash
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➜ golang git:(v2.0_xdb) ✗ ./searcher bench --db=../../data/ip2region.xdb --src=../../data/ip.merge.txt
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Bench finished, {total: 3417955, took: 28.211578339s, cost: 8253 ns/op}
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```
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bench 程序会逐行读取 `src` 指定的源IP文件，然后每个 IP 段选取 5 个固定位置的 IP 进行测试，以确保查询的 region 信息和原始的 region 信息是相同。测试途中没有调试信息的输出，有错误会打印错误信息并且终止运行，所以看到 `Bench finished` 就表示 bench 成功了，cost 是表示每次查询操作的平均时间(ns)。
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