add python api

Change-Id: Id098c63b08752493358052185c440fbec99533c5

curvefs_python/BUILD_bak

@@ -0,0 +1,80 @@
+# https://docs.bazel.build/versions/master/be/c-cpp.html#cc_library
+
+COPTS = [
+    "-DGFLAGS=gflags",
+    "-DOS_LINUX",
+    "-DSNAPPY",
+    "-DHAVE_SSE42",
+    "-DNDEBUG",
+    "-fno-omit-frame-pointer",
+    "-momit-leaf-frame-pointer",
+    "-msse4.2",
+    "-pthread",
+    "-Wsign-compare",
+    "-Wno-unused-parameter",
+    "-Wno-unused-variable",
+    "-Woverloaded-virtual",
+    "-Wnon-virtual-dtor",
+    "-Wno-missing-field-initializers",
+    "-std=c++14",
+]
+
+cc_library(
+    name = "curvefs",
+    srcs = glob(["*.cxx"]),
+    hdrs = glob(["*h"]),
+    deps = [
+        "//external:gflags",
+        "//external:glog",
+        "//external:leveldb",
+        "//external:brpc",
+        "//external:braft",
+        "//external:protobuf",
+        "//src/common:curve_common",
+        "//src/common:curve_auth",
+        "//include/client:include_client",
+        "//include:include-common",
+        "//proto:nameserver2_cc_proto",
+        "//proto:topology_cc_proto",
+        "//proto:chunkserver-cc-protos",
+         "//src/client:curve_client"
+    ],
+    copts = COPTS,
+    linkopts = [
+        "-lbraft",
+        "-lcbd",
+        "-lcurve_client",
+        "-lbrpc",
+        "-lbthread",
+        "-lbvar",
+        "-ljson2pb",
+        "-lmcpack2pb",
+        "-lbutil",
+        "-lprotoc_lib",
+        "-lcc_brpc_internal_proto",
+        "-lcc_brpc_idl_options_proto",
+        "-lleveldb",
+        "-lcc_braft_internal_proto",
+        "-lcurve_common",
+        "-lcurve_auth",
+        "-lcurve_concurrent",
+        "-lglog",
+        "-lgflags",
+        "-lnameserver2_proto",
+        "-ltopology_proto",
+        "-lchunkserver-protos",
+        "-lprotobuf",
+        "-lprotobuf_lite",
+        "-lssl",
+        "-lrt",
+        "-lssl",
+        "-lcrypto",
+        "-ldl",
+        "-lz",
+        "-lpthread",
+        "-lunwind",
+        "-lstdc++",
+        "-lm",
+    ],
+    visibility = ["//visibility:public"],
+)

curvefs_python/README

@@ -0,0 +1,18 @@
+1.编译整个工程
+2.在curve目录下执行 ./curvefs_python/config.sh
+3.编译curvefs库
+4.拷贝生成libcurvefs动态库到动态库可以搜索的路径
+5.接口封装在curvefs.py中，可以通过import curvefs使用
+
+eg：
+
+编译整个工程：
+bazel build ... --copt -DHAVE_ZLIB=1 --compilation_mode=dbg -s --define=with_glog=true --define=libunwind=true
+
+在curve目录下执行配置脚本
+sh ./curvefs_python/config.sh
+
+编译curvefs库（需要增加一个linkopt选项，指定curvefs_python/tmplib路径）：
+bazel build curvefs_python:curvefs  --copt -DHAVE_ZLIB=1 --compilation_mode=dbg -s --define=with_glog=true --define=libunwind=true --linkopt -L/home/hzzhaojianming/curve/curvefs_python/tmplib
+
+编译成功，拷贝libcurvefs.so并重命名为_curvefs.so

curvefs_python/client.conf

@@ -0,0 +1,33 @@
+#
+# metaserver config
+#
+metaserver_addr=127.0.0.1:6666
+
+#
+# metacache config
+#
+getLeaderRetry=3
+retryIntervalUs=500
+
+#
+# request scheduler config
+#
+queueCapacity=4096
+threadpoolSize=2
+
+#
+# failure retry policy
+#
+opRetryIntervalUs=200000
+opMaxRetry=3
+
+#
+# io option
+#
+enableAppliedIndexRead=1
+ioSplitMaxSize=64
+
+#
+# log info
+#
+loglevel=0

curvefs_python/configure.sh

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+#!/bin/sh
+echo "********************************************************************"
+echo "***********Prepare for curvefs python API build env.****************"
+echo "********************************************************************"
+echo "First of all, you must build curve all. Then you can run this script."
+
+curve_path=$PWD
+
+echo "curve workspace path is $curve_path"
+
+cd $curve_path/curvefs_python/
+
+echo "Prepare bazel build file"
+cp BUILD_bak BUILD -f
+
+echo "copy libs to tmplib directory"
+
+mkdir tmplib
+for i in `find $curve_path/bazel-bin/|grep -w so|grep -v solib|grep -v params`
+  do
+    echo $i
+    cp -f $i ./tmplib/
+  done
+
+echo "Prepare env done, you can build curvefs now."
+echo "Plesae add --linkopt -L/path/to/tmplib to bazel build command line."

curvefs_python/curvefs.i

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+%module curvefs
+%{
+#include <stdint.h>
+#include "libcurvefs.h"
+%}
+
+%include <stdint.i>
+%include "libcurvefs.h"