rpmbuild淘宝datax代码，File not found问题解决

原创，转载请注明出处。

首先批评一下：淘宝开源了数据抽取的工具datax，但是他在开源之后后续技术支持简直惨不忍睹。技术文档完全不是一个业内技术航母应有的范儿，文档水准简直业余。个人觉得，你既然支持开源，起码也要尊重开源，随便搞了一个文档就想糊弄，要知道这个使用者带来很大问题，并花费很多时间。

在RHEL 6.2 rpmbulid datax源码包，出现报错信息：

[code="java"]
# rpmbuild -ba t_dp_datax_engine.spec
。。。。。
Processing files: t_dp_datax_engine-1.0.0-1.noarch
error: File not found: /root/rpmbuild/BUILDROOT/t_dp_datax_engine-1.0.0-1.x86_64/home/taobao/datax/bin
error: File not found: /root/rpmbuild/BUILDROOT/t_dp_datax_engine-1.0.0-1.x86_64/home/taobao/datax/conf
error: File not found: /root/rpmbuild/BUILDROOT/t_dp_datax_engine-1.0.0-1.x86_64/home/taobao/datax/engine
error: File not found: /root/rpmbuild/BUILDROOT/t_dp_datax_engine-1.0.0-1.x86_64/home/taobao/datax/common
error: File not found: /root/rpmbuild/BUILDROOT/t_dp_datax_engine-1.0.0-1.x86_64/home/taobao/datax/libs
error: File not found: /root/rpmbuild/BUILDROOT/t_dp_datax_engine-1.0.0-1.x86_64/home/taobao/datax/logs
error: File not found: /root/rpmbuild/BUILDROOT/t_dp_datax_engine-1.0.0-1.x86_64/home/taobao/datax/jobs


RPM build errors:
File not found: /root/rpmbuild/BUILDROOT/t_dp_datax_engine-1.0.0-1.x86_64/home/taobao/datax/bin
File not found: /root/rpmbuild/BUILDROOT/t_dp_datax_engine-1.0.0-1.x86_64/home/taobao/datax/conf
File not found: /root/rpmbuild/BUILDROOT/t_dp_datax_engine-1.0.0-1.x86_64/home/taobao/datax/engine
File not found: /root/rpmbuild/BUILDROOT/t_dp_datax_engine-1.0.0-1.x86_64/home/taobao/datax/common
File not found: /root/rpmbuild/BUILDROOT/t_dp_datax_engine-1.0.0-1.x86_64/home/taobao/datax/libs
File not found: /root/rpmbuild/BUILDROOT/t_dp_datax_engine-1.0.0-1.x86_64/home/taobao/datax/logs
File not found: /root/rpmbuild/BUILDROOT/t_dp_datax_engine-1.0.0-1.x86_64/home/taobao/datax/jobs
[/code]

我知道这是rhel 6.2的rpmbuild的buildroot的目录和rhel 5不一样。上述问题的解决方法：
修改t_dp_datax_engine.spec。
[code="java"]
# cat t_dp_datax_engine.spec
summary: engine provides core scheduler and data swap storage for DataX
Name: t_dp_datax_engine
Version: 1.0.0
Release: 1
Group: System
License: GPL
AutoReqProv: no
BuildArch: noarch

%define dataxpath /home/taobao/datax //改成%{buildroot}/home/taobao/datax
%define vdataxpath /home/taobao/datax //添加，其中vdataxpath下面要用

%description
DataX Engine provides core scheduler and data swap storage for DataX

%prep
cd ${OLDPWD}/../
export LANG=zh_CN.UTF-8
ant dist

%build

%install
dos2unix ${OLDPWD}/../release/datax.py

mkdir -p %{dataxpath}/bin
mkdir -p %{dataxpath}/conf
mkdir -p %{dataxpath}/engine
mkdir -p %{dataxpath}/common
mkdir -p %{dataxpath}/libs
mkdir -p %{dataxpath}/jobs
mkdir -p %{dataxpath}/logs

cp ${OLDPWD}/../jobs/sample/*.xml %{dataxpath}/jobs
cp ${OLDPWD}/../release/*.py %{dataxpath}/bin/

cp -r ${OLDPWD}/../conf/*.properties %{dataxpath}/conf
cp -r ${OLDPWD}/../conf/*.xml %{dataxpath}/conf

cp -r ${OLDPWD}/../build/engine/*.jar %{dataxpath}/engine

cp -r ${OLDPWD}/../build/common/*.jar %{dataxpath}/common
cp ${OLDPWD}/../c++/build/libcommon.so %{dataxpath}/common

cp -r ${OLDPWD}/../libs/commons-io-2.0.1.jar %{dataxpath}/libs
cp -r ${OLDPWD}/../libs/commons-lang-2.4.jar %{dataxpath}/libs
cp -r ${OLDPWD}/../libs/dom4j-2.0.0-ALPHA-2.jar %{dataxpath}/libs
cp -r ${OLDPWD}/../libs/jaxen-1.1-beta-6.jar %{dataxpath}/libs
cp -r ${OLDPWD}/../libs/junit-4.4.jar %{dataxpath}/libs
cp -r ${OLDPWD}/../libs/log4j-1.2.16.jar %{dataxpath}/libs
cp -r ${OLDPWD}/../libs/slf4j-api-1.4.3.jar %{dataxpath}/libs
cp -r ${OLDPWD}/../libs/slf4j-log4j12-1.4.3.jar %{dataxpath}/libs

%post
chmod -R 0777 %{dataxpath}/jobs //改成chmod -R 0777 %{vdataxpath}/jobs
chmod -R 0777 %{dataxpath}/logs //改成chmod -R 0777 %{vdataxpath}/logs

%files
%defattr(0755,root,root)
%{dataxpath}/bin // 改成%{vdataxpath}/bin
%{dataxpath}/conf //改成%{vdataxpath}/conf
%{dataxpath}/engine //改成%{vdataxpath}/engine
%{dataxpath}/common //改成%{vdataxpath}/common
%{dataxpath}/libs //改成%{vdataxpath}/libs
%attr(0777,root,root) %dir %{dataxpath}/logs //改成%attr(0777,root,root)
%{vdataxpath}/logs
%attr(0777,root,root) %dir %{dataxpath}/jobs //改成 %attr(0777,root,root) %{vdataxpath}/jobs


%changelog
* Fri Aug 20 2010 meining
- Version 1.0.0
[/code]


编译结果：
[code="java"]
# rpmbuild -ba t_dp_datax_engine.spec
。。。
Processing files: t_dp_datax_engine-1.0.0-1.noarch
Checking for unpackaged file(s): /usr/lib/rpm/check-files /root/rpmbuild/BUILDROOT/t_dp_datax_engine-1.0.0-1.x86_64
Wrote: /root/rpmbuild/SRPMS/t_dp_datax_engine-1.0.0-1.src.rpm
Wrote: /root/rpmbuild/RPMS/noarch/t_dp_datax_engine-1.0.0-1.noarch.rpm
Executing(%clean): /bin/sh -e /var/tmp/rpm-tmp.y3UwSl
+ umask 022
+ cd /root/rpmbuild/BUILD
+ /bin/rm -rf /root/rpmbuild/BUILDROOT/t_dp_datax_engine-1.0.0-1.x86_64
+ exit 0
[/code]

至于rpmbuil的SPEC文件的定义参数含义，可以参考：
http://fedoraproject.org/wiki/How_to_create_an_RPM_package#.25install_section


以上是我解决的问题。还有一个我没能解决的问题是：
编译符合我环境的oraclewriter。
datax的文档是怎么写的：
由于Oracle最终通过jni调用oci机制导入数据， 默认情况下，DataX提供基于Intel x86_64 liboraclewriter.so包。如果你使用的平台硬件和默认情况不匹配，需要编译oraclewriter C++代码，liboraclewriter.so需要libiconv库的支持，请先检查该库是否存在。具体编译过程如下：
1) 进入 DataX源码中的c++/src/oracledumper/src/ 目录
2) 输入make命令即可编译
3) 将当前目录下编译完成的liboraclewriter.so 拷贝至/home/taobao/datax/plugins/目录下，覆盖默认的liboraclewriter.so即可

在rhel5.4的基础上面我进行了编译，虽然也是OK的，但是其中需要注意的是：
*这一步是要在oracle软件安装的那一台机器上上面去编译，并且环境变量中指定ORACLE_HOME
*要指明LD_LIBRARY_PATH
*其中还要安装libiconv库。

但是在我rhel6.2的上面上，怎么都不编译成功。
我做了以下修改trunk/c++/src/oracledumper/src/Makefile，修改的原因他是找不到jni.h.
修改如下：
[code="java"]
# cat Makefile
INCLUDE=-I../include //添加 -I${ORACLE_HOME}/jdk/include -I${ORACLE_HOME}/jdk/include/linux
LIBS=-lclntsh -liconv -L../lib -L${ORACLE_HOME}/lib -L../../../../libs/
CC=g++
OBJS=liboraclewriter.so
CFLAGS=-shared -fPIC -Wl,-rpath=/home/taobao/datax/libs
CPP=common.cpp dumper.cpp oradumper.cpp strsplit.cpp com_taobao_datax_plugins_writer_oraclewriter_OracleWriterJni.cpp

OBJS: $(CPP)
$(CC) $(INCLUDE) -o $(OBJS) $(CPP) $(CFLAGS) $(LIBS)
clean:
rm -rf $(OBJS)
[/code]


可是最终我还是卡在这里了：
[code="java"]
# make
g++ -I../include -I/home/oracle/database/product/10.2.0/db_1/jdk/include -I/home/oracle/database/product/10.2.0/db_1/jdk/include/linux -o liboraclewriter.so common.cpp dumper.cpp oradumper.cpp strsplit.cpp com_taobao_datax_plugins_writer_oraclewriter_OracleWriterJni.cpp -shared -fPIC -Wl,-rpath=/home/taobao/datax/libs -lclntsh -liconv -L../lib -L/home/oracle/database/product/10.2.0/db_1/lib -L../../../../libs/
oradumper.cpp: In member function ?.irtual void OraDumper::RunDump(const char*)?.
oradumper.cpp:305: error: invalid conversion from ?.onst char*?.to ?.har*?
oradumper.cpp:312: warning: deprecated conversion from string constant to ?.har*?
oradumper.cpp:314: warning: deprecated conversion from string constant to ?.har*?
make: *** [OBJS] Error 1
[/code]
这我就无能无力了，cpp代码不是我强项。

现在只能希望在rhel5.4的版本生成的liboraclewriter.so在rhel6.2上面能用。不然就得联系淘宝的开发人员了。
我的总结，淘宝datax对目前rhel6的支持还不够，希望跟他们联系了，能解决这个问题，晚上这个很好开源软件。

最后还是对淘宝表示敬意，希望各方面都做的像一个领导者。