Merge pull request #1229 from taosdata/feature/support-python3

migrate datax.py to python3 and keep compatible with python2

core/src/main/bin/datax.py

@@ -1,23 +1,26 @@
 #!/usr/bin/env python
 # -*- coding:utf-8 -*-
 
-import sys
-import os
-import signal
-import subprocess
-import time
-import re
-import socket
-import json
-from optparse import OptionParser
-from optparse import OptionGroup
-from string import Template
 import codecs
+import json
+import os
 import platform
+import re
+import signal
+import socket
+import subprocess
+import sys
+import time
+from optparse import OptionGroup
+from optparse import OptionParser
+from string import Template
+
+ispy2 = sys.version_info.major == 2
 
 def isWindows():
     return platform.system() == 'Windows'
 
+
 DATAX_HOME = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
 
 DATAX_VERSION = 'DATAX-OPENSOURCE-3.0'
@@ -52,13 +55,19 @@ def getLocalIp():
 
 def suicide(signum, e):
     global child_process
+    if ispy2:
         print >> sys.stderr, "[Error] DataX receive unexpected signal %d, starts to suicide." % (signum)
+    else:
+        print("[Error] DataX receive unexpected signal %d, starts to suicide." % (signum), sys.stderr)
 
     if child_process:
         child_process.send_signal(signal.SIGQUIT)
         time.sleep(1)
         child_process.kill()
+    if ispy2:
         print >> sys.stderr, "DataX Process was killed ! you did ?"
+    else:
+        print("DataX Process was killed ! you did ?", sys.stderr)
     sys.exit(RET_STATE["KILL"])
 
 
@@ -108,13 +117,16 @@ def getOptionParser():
     parser.add_option_group(devEnvOptionGroup)
     return parser
 
+
 def generateJobConfigTemplate(reader, writer):
-    readerRef = "Please refer to the %s document:\n     https://github.com/alibaba/DataX/blob/master/%s/doc/%s.md \n" % (reader,reader,reader)
-    writerRef = "Please refer to the %s document:\n     https://github.com/alibaba/DataX/blob/master/%s/doc/%s.md \n " % (writer,writer,writer)
-    print readerRef
-    print writerRef
+    readerRef = "Please refer to the %s document:\n     https://github.com/alibaba/DataX/blob/master/%s/doc/%s.md \n" % (
+        reader, reader, reader)
+    writerRef = "Please refer to the %s document:\n     https://github.com/alibaba/DataX/blob/master/%s/doc/%s.md \n " % (
+        writer, writer, writer)
+    print(readerRef)
+    print(writerRef)
     jobGuid = 'Please save the following configuration as a json file and  use\n     python {DATAX_HOME}/bin/datax.py {JSON_FILE_NAME}.json \nto run the job.\n'
-    print jobGuid
+    print(jobGuid)
     jobTemplate = {
         "job": {
             "setting": {
@@ -133,21 +145,23 @@ def generateJobConfigTemplate(reader, writer):
     readerTemplatePath = "%s/plugin/reader/%s/plugin_job_template.json" % (DATAX_HOME, reader)
     writerTemplatePath = "%s/plugin/writer/%s/plugin_job_template.json" % (DATAX_HOME, writer)
     try:
-      readerPar = readPluginTemplate(readerTemplatePath);
-    except Exception, e:
-       print "Read reader[%s] template error: can\'t find file %s" % (reader,readerTemplatePath)
+        readerPar = readPluginTemplate(readerTemplatePath)
+    except:
+        print("Read reader[%s] template error: can\'t find file %s" % (reader, readerTemplatePath))
     try:
-      writerPar = readPluginTemplate(writerTemplatePath);
-    except Exception, e:
-      print "Read writer[%s] template error: : can\'t find file %s" % (writer,writerTemplatePath)
-    jobTemplate['job']['content'][0]['reader'] = readerPar;
-    jobTemplate['job']['content'][0]['writer'] = writerPar;
-    print json.dumps(jobTemplate, indent=4, sort_keys=True)
+        writerPar = readPluginTemplate(writerTemplatePath)
+    except:
+        print("Read writer[%s] template error: : can\'t find file %s" % (writer, writerTemplatePath))
+    jobTemplate['job']['content'][0]['reader'] = readerPar
+    jobTemplate['job']['content'][0]['writer'] = writerPar
+    print(json.dumps(jobTemplate, indent=4, sort_keys=True))
+
 
 def readPluginTemplate(plugin):
     with open(plugin, 'r') as f:
         return json.load(f)
 
+
 def isUrl(path):
     if not path:
         return False
@@ -168,7 +182,7 @@ def buildStartCommand(options, args):
 
     if options.remoteDebug:
         tempJVMCommand = tempJVMCommand + " " + REMOTE_DEBUG_CONFIG
-        print 'local ip: ', getLocalIp()
+        print('local ip: ', getLocalIp())
 
     if options.loglevel:
         tempJVMCommand = tempJVMCommand + " " + ("-Dloglevel=%s" % (options.loglevel))
@@ -198,11 +212,11 @@ def buildStartCommand(options, args):
 
 
 def printCopyright():
-    print '''
+    print('''
 DataX (%s), From Alibaba !
 Copyright (C) 2010-2017, Alibaba Group. All Rights Reserved.
 
-''' % DATAX_VERSION
+''' % DATAX_VERSION)
     sys.stdout.flush()
 
 

userGuid.md

@@ -10,7 +10,7 @@ DataX本身作为数据同步框架，将不同数据源的同步抽象为从源
 
 - Linux
 - [JDK(1.8以上，推荐1.8) ](http://www.oracle.com/technetwork/cn/java/javase/downloads/index.html) 
-- [Python(推荐Python2.6.X) ](https://www.python.org/downloads/)
+- [Python(2或3都可以) ](https://www.python.org/downloads/)
 - [Apache Maven 3.x](https://maven.apache.org/download.cgi) (Compile DataX)
 
 # Quick Start