phxpaxos 共识算法

phxpaxos 项目的演示和实验

Posted by SeaYuns Space on Tuesday, February 18, 2020 | | 共836字 ，阅读约 4 分钟

linux环境配置

helloworld@Vostro:~/Downloads/automake-1.14$ uname -a
Linux Vostro 5.3.0-40-generic #32~18.04.1-Ubuntu SMP Mon Feb 3 14:05:59 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
helloworld@Vostro:~$ cat /etc/lsb-release 
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=18.04
DISTRIB_CODENAME=bionic
DISTRIB_DESCRIPTION="Ubuntu 18.04.4 LTS"

下载 phpaxos 源码

git clone https://github.com/Tencent/phxpaxos.git  --recursive

下载过程中, 可能会报这样的错, 在运行git clone命令时很容易出现这个错误，这是下载的包太大，网速慢超时报错。

git clone https://github.com/Tencent/phxpaxos.git  --recursive
...
git clone error RPC failed:curl 56 GnuTLS recv error (-54):Error in the pull function
fatar: The remote end hung up unexpectedly
fatal : early EOF
fatal : index-pack failed
...

可通过更改设置解决, git config -l 查看配置

- httpBuffer加大    
git config --global http.postBuffer 524288000

- 压缩配置
git config --global core.compression -1    

- 修改配置文件.bashrc
export GIT_TRACE_PACKET=1
export GIT_TRACE=1
export GIT_CURL_VERBOSE=1

环境编译

依赖关系

看一下各目录的依赖关系。如下：

目录 编译对象 内部依赖 第三方库依赖
根目录 libphxpaxos.a 无 protobuf,leveldb
plugin libphxpaxos_plugin.a libphxpaxos.a glog
sample/phxelection 可执行程序 libphxpaxos.a,libphxpaxos_plugin.a 无
sample/phxecho 可执行程序 libphxpaxos.a,libphxpaxos_plugin.a 无
sample/phxkv 可执行程序 libphxpaxos.a,libphxpaxos_plugin.a grpc
src/ut 单元测试 无 gtest,gmock

注意: 如仅需使用libphxpaxos.a进行开发，只需要编译leveldb和protobuf。而如果希望使用我们的glog打日志插件模块，或者想尝试编译sample目录，或用于phxsql使用，则还需要编译libphxpaxos_plugin.a, 这个静态库依赖了glog。

编译 leveldb

进入third_party/leveldb目录。
下载 leveldb1.18版  https://github.com/google/leveldb/releases
make，编译完成后会在当前目录生成libleveldb.a文件。
mkdir lib建立一个lib目录，然后cd lib;ln -s ../libleveldb.a libleveldb.a建立一个软链，PhxPaxos通过lib这个目录来寻址静态库。

编译 protobuf

进入third_party/protobuf目录。
./autogen.sh

出错

helloworld@Vostro:~/Workspace/gopath/src/github.com/bingo/phxpaxos/third_party/protobuf$ ./autogen.sh 
Google Mock not present.  Fetching gmock-1.7.0 from the web...
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:--  0:02:12 --:--:--     0curl: (7) Failed to connect to googlemock.googlecode.com port 443: Connection timed out

​ 下载[gmoock](git clone https://github.com/paulsapps/gmock-1.7.0 ]) 到当前目录,或将third_party/目录下gmock文件夹，直接拷贝到third_party/protobuf文件夹下,再次执行 ./autogen.sh

出错

>>> configure.ac:93: error: possibly undefined macro: AC_PROG_LIBTOOL
      If this token and others are legitimate, please use m4_pattern_allow.
      See the Autoconf documentation.
>>> autoreconf: /usr/bin/autoconf failed with exit status: 1

下载 libtool libsysfs-dev

sudo  apt  install  libtool libsysfs-dev

再次执行 ./autogen.sh

如果还是报错

libtoolize --copy --force

报错

helloworld@Vostro:~/Workspace/gopath/src/github.com/bingo/phxpaxos/third_party/protobuf$ ./autogen.sh 
+ mkdir -p third_party/googletest/m4
+ autoreconf -f -i -Wall,no-obsolete
libtoolize: putting auxiliary files in '.'.
libtoolize: copying file './ltmain.sh'
libtoolize: putting macros in AC_CONFIG_MACRO_DIRS, 'm4'.
libtoolize: copying file 'm4/libtool.m4'
libtoolize: copying file 'm4/ltoptions.m4'
libtoolize: copying file 'm4/ltsugar.m4'
libtoolize: copying file 'm4/ltversion.m4'
libtoolize: copying file 'm4/lt~obsolete.m4'
Unescaped left brace in regex is illegal here in regex; marked by <-- HERE in m/\${ <-- HERE ([^ \t=:+{}]+)}/ at /usr/local/bin/automake line 3930.
autoreconf: automake failed with exit status: 255

原因是Perl不支持以前的写法。

解决方法

编辑提示的文件xxx的行号xxx 例如 /usr/bin/automake 第 3930 行 将 - $text =~ s/\${([^ \t=:+{}]+)}/substitute_ac_subst_variables_worker ($1)/ge; 修改为 - $text =~ s/\$[{]([^ \t=:+{}]+)}/substitute_ac_subst_variables_worker ($1)/ge;

出现exit 0 即可

继续编译

./configure CXXFLAGS=-fPIC --prefix=[当前目录绝对路径], 这一步CXXFLAGS和--prefix都必须设置对。  可直接使用./configure CXXFLAGS=-fPIC --prefix=`pwd`
make && make install
编译完成后检查是否在当前目录成功生成bin,include,lib三个子目录。

编译 glog

进入third_party/glog目录。
./configure CXXFLAGS=-fPIC -prefix=[当前目录绝对路径], 这一步CXXFLAGS和-prefix都必须设置对。
sudo  make && sudo make install
编译完成检查是否在当前目录成功生成lib子目录，并检查在lib目录是否成功生成静态库libglog.a.

出错

>>> cd . && automake-1.14 --gnu
/bin/sh:line 4: automake-1.14: command not found
make: *** [Makefile.in] error 1
[root@localhost glog]# make && make install
 cd . && automake-1.14 --gnu
/bin/sh:line 4: automake-1.14: command not found
make: *** [Makefile.in] error 1

安装依赖

helloworld@Vostro:~/Downdown wget http://ftp.gnu.org/gnu/automake/automake-1.14.tar.gz
helloworld@Vostro:~/Downdown wget http://ftp.gnu.org/gnu/autoconf/autoconf-2.69.tar.gz
tar xvzf autoconf-2.69.tar.gz
cd autoconf-2.69
yum -y install libtool libsysfs-dev 
./configure
make && make install

tar xvzf automake-1.14.tar.gz
cd automake-1.14
./configure
make && make install

automake --version
>>> automake (GNU automake) 1.14

​ Makefile:372: recipe for target ‘aclocal.m4’ failed

出错

 sudo make && sudo  make  install 
 cd . && automake-1.14 --gnu
parallel-tests: error: required file './test-driver' not found
parallel-tests:   'automake --add-missing' can install 'test-driver'
Makefile:928: recipe for target 'Makefile.in' failed
make: *** [Makefile.in] Error 1

根据提示操作

sudo automake --add-missing
sudo  aclocal-1.14
sudo  make && sudo  make install

编译 PhxPaxos

进入PhxPaxos根目录。
./autoinstall.sh
make && make install (默认使用-O2编译优化参数，如需编译debug版本，则命令为make debug=y)
编译完成后检查是否在当前目录成功生成lib子目录，并检查在lib目录是否成功生成静态库libphxpaxos.a.

编译 PhxPaxos Plugin静态库

cd PhxPaxos/plugin
make && make install
至此，PhxPaxos Plugin静态库编译成功，检查上层lib目录下是否成功生成静态库libphxpaxos_plugin.a.

编译 gflags

源码已经跟随第一步下载到third_party/文件夹下，官网手册里没有编译它的步骤实乃大坑。因为不编译它，会在编译sample/phxecho中报错：

g++: error: /home/helloworld/Workspace/gopath/src/github.com/bingo/phxpaxos/third_party/leveldb/lib/libleveldb.a: No such file or directory
Makefile:36: recipe for target 'phxecho' failed
make: *** [phxecho] Error 1>>> g++: error：/root/git/phxpaxos/third_party/gflags/lib/libgflags.a：No such file or directory

编译

camke .
sudo make && sudo make install

三个sample 运行

phxelection

介绍: This is very simple sample to use phxpaxos to election. Check the code in election.cpp, that is really simple.

了解选举过程

$ sudo  make
$ ./phxelection 127.0.0.1:11111 127.0.0.1:11111,127.0.0.1:11112,127.0.0.1:11113
$ ./phxelection 127.0.0.1:11112 127.0.0.1:11111,127.0.0.1:11112,127.0.0.1:11113
$ ./phxelection 127.0.0.1:11113 127.0.0.1:11111,127.0.0.1:11112,127.0.0.1:11113

image-20200216230700814

phxecho

helloworld@Vostro:~/Workspace/gopath/src/github.com/bingoaxos/sample/phxkv$ sudo  make
helloworld@Vostro:~/Workspace/gopath/src/github.com/bingoaxos/sample/phxkv$ mkdir log
#运行
$ ./phxecho  127.0.0.1:11111 127.0.0.1:11111,127.0.0.1:11112,127.0.0.1:11113
$ ./phxecho  127.0.0.1:11112 127.0.0.1:11111,127.0.0.1:11112,127.0.0.1:11113
$ ./phxecho  127.0.0.1:11113 127.0.0.1:11111,127.0.0.1:11112,127.0.0.1:11113

phxkv

直接make发现出错

--grpc_out: protoc-gen-grpc: Plugin failed with status code 1.
/home/helloworld/Workspace/gopath/src/github.com/bingo/phxpaxos/makefile.mk:58: recipe for target 'phxkv.grpc.pb.cc' failed
make: *** [phxkv.grpc.pb.cc] Error 1

原因: 缺少第三方依赖 grpc

编译 grpc

源码 grpc源码 

git clone --recursive https://github.com/grpc/grpc.git
cd grpc
git submodule update --init

编译

make

出错

  • zlib 没有自动编译

    检查是否第三方软件下载完全

    $ git submodule update --init  发现无错误
#重新下载编译
$ cd third_party/
$ git clone https://github.com/madler/zlib.git
$ cd zlib
$ mdkir .build
$ cd .build
$ cmake ..
$ make

  • protobuf 出错

    configure.ac:30: error: possibly undefined macro: AC_PROG_LIBTOOL       
If this token and others are legitimate, please use m4_pattern_allow.       
See the Autoconf documentation.

    google出来的答案都是说, 安装下列软件,可是自己早下载过了,没有找到原因

    sudo apt install  libtool libgflags-dev libgtest-dev

    最后使用了之前编译好的 protobuf, 神奇的坑…

最后回到phxkv,运行例子

$ make 
$ sh prepare.sh
$ #sample
#./phxkv_grpcserver 127.0.0.1:21111 127.0.0.1:11111 127.0.0.1:11111,127.0.0.1:11112,127.0.0.1:11113 ./storage/kvdb_0 ./storage/paxoslog_0
#./phxkv_grpcserver 127.0.0.1:21112 127.0.0.1:11112 127.0.0.1:11111,127.0.0.1:11112,127.0.0.1:11113 ./storage/kvdb_1 ./storage/paxoslog_1
#./phxkv_grpcserver 127.0.0.1:21113 127.0.0.1:11113 127.0.0.1:11111,127.0.0.1:11112,127.0.0.1:11113 ./storage/kvdb_2 ./storage/paxoslog_2

#client 测试
#./phxkv_client_tools 127.0.0.1:21112 put key_hello value_paxos 0
#./phxkv_client_tools 127.0.0.1:21112 getlocal key_hello
#./phxkv_client_tools 127.0.0.1:21112 getglobal key_hello
#./phxkv_client_tools 127.0.0.1:21112 delete key_hello 0

#./phxkv_client_tools 127.0.0.1:21111 put key_hello value_paxos 0
#./phxkv_client_tools 127.0.0.1:21111 getlocal key_hello
#./phxkv_client_tools 127.0.0.1:21111 getglobal key_hello
#./phxkv_client_tools 127.0.0.1:21111 delete key_hello 0

#./phxkv_client_tools 127.0.0.1:21113 put key_hello value_paxos 0
#./phxkv_client_tools 127.0.0.1:21113 getlocal key_hello
#./phxkv_client_tools 127.0.0.1:21113 getglobal key_hello
#./phxkv_client_tools 127.0.0.1:21113 delete key_hello 0

[注意]可能会遇到文件权限的原因,加上sudo就ok了

image-20200219005222689

image-20200219021235326

![image-20200609101441610](/home/helloworld/.config/Typora/typora-user-images/image-20200609101441610.png

[参考链接]

phxpaxos: https://github.com/Tencent/phxpaxos

中文详细编译手册: https://github.com/Tencent/phxpaxos/wiki/中文详细编译手册

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