gerrit.onap Code Review - ccsdk/cds.git/blob

   1 /*
   2  * Copyright © 2017-2018 AT&T Intellectual Property.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 package org.onap.ccsdk.apps.blueprintsprocessor.functions.python.executor.utils
  18
  19 import org.onap.ccsdk.apps.blueprintsprocessor.services.execution.AbstractComponentFunction
  20 import org.python.core.PyObject
  21 import org.python.util.PythonInterpreter
  22 import org.slf4j.LoggerFactory
  23 import java.io.File
  24 import java.util.*
  25
  26 class PythonExecutorUtils {
  27     companion object {
  28
  29         private val log = LoggerFactory.getLogger(PythonExecutorUtils::class.java)
  30
  31         fun getPythonComponent(executePath: String, pythonPath: MutableList<String>, content: String?, interfaceName: String,
  32                                properties: MutableMap<String, Any>): AbstractComponentFunction {
  33
  34             initPython(executePath, pythonPath, arrayListOf())
  35             val pythonInterpreter = PythonInterpreter()
  36
  37             properties.forEach { (name, value) ->
  38                 pythonInterpreter.set(name, value)
  39             }
  40
  41             pythonInterpreter.exec("import sys")
  42
  43             content?.let {
  44                 pythonInterpreter.exec(content)
  45             }
  46
  47             val initCommand = interfaceName.plus(" = ").plus(interfaceName).plus("()")
  48             pythonInterpreter.exec(initCommand)
  49             val pyObject: PyObject = pythonInterpreter.get(interfaceName)
  50
  51             log.info("Component Object {}", pyObject)
  52
  53             return pyObject.__tojava__(AbstractComponentFunction::class.java) as AbstractComponentFunction
  54         }
  55
  56         private fun initPython(executablePath: String,
  57                        pythonPath: MutableList<String>, argv: MutableList<String>) {
  58
  59             val props = Properties()
  60             // Build up the python.path
  61             val sb = StringBuilder()
  62             sb.append(System.getProperty("java.class.path"))
  63
  64             for (p in pythonPath) {
  65                 sb.append(File.pathSeparator).append(p)
  66             }
  67             log.debug("Python Paths : $sb")
  68
  69             props["python.import.site"] = "true"
  70             props.setProperty("python.path", sb.toString())
  71             props.setProperty("python.verbose", "error")
  72             props.setProperty("python.executable", executablePath)
  73
  74             PythonInterpreter.initialize(System.getProperties(), props, argv.toTypedArray())
  75         }
  76
  77     }
  78 }