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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (METRON-571) Add stellar keywords for executing local commands
Date Fri, 10 Mar 2017 04:01:38 GMT

    [ https://issues.apache.org/jira/browse/METRON-571?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15904394#comment-15904394
] 

ASF GitHub Bot commented on METRON-571:
---------------------------------------

Github user ottobackwards commented on a diff in the pull request:

    https://github.com/apache/incubator-metron/pull/439#discussion_r105327240
  
    --- Diff: metron-platform/metron-common/src/main/java/org/apache/metron/common/dsl/ExternalFunctions.java
---
    @@ -0,0 +1,292 @@
    +/**
    + * Licensed to the Apache Software Foundation (ASF) under one
    + * or more contributor license agreements.  See the NOTICE file
    + * distributed with this work for additional information
    + * regarding copyright ownership.  The ASF licenses this file
    + * to you under the Apache License, Version 2.0 (the
    + * "License"); you may not use this file except in compliance
    + * with the License.  You may obtain a copy of the License at
    + *
    + *     http://www.apache.org/licenses/LICENSE-2.0
    + *
    + * Unless required by applicable law or agreed to in writing, software
    + * distributed under the License is distributed on an "AS IS" BASIS,
    + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    + * See the License for the specific language governing permissions and
    + * limitations under the License.
    + */
    +package org.apache.metron.common.dsl.functions;
    +
    +import java.io.BufferedReader;
    +import java.io.File;
    +import java.io.IOException;
    +import java.io.InputStream;
    +import java.io.InputStreamReader;
    +import java.io.OutputStream;
    +import java.io.PrintWriter;
    +import java.util.List;
    +import java.lang.ProcessBuilder;
    +import java.lang.ClassLoader;
    +import java.lang.reflect.Method;
    +import java.util.Map;
    +import java.util.regex.Pattern;
    +import com.google.common.base.Joiner;
    +import com.google.common.base.Splitter;
    +import com.google.common.collect.Iterables;
    +import org.apache.metron.common.dsl.Context;
    +import org.apache.metron.common.dsl.StellarFunction;
    +import org.apache.metron.common.dsl.ParseException;
    +import org.apache.metron.common.dsl.Stellar;
    +
    +/**
    + * Executes external script on server via stellar process
    + */
    +public class ExternalFunctions {
    +
    +	public static class ExecuteScript implements StellarFunction {
    +
    +        private ThreadedStreamHandler inStream;
    +        private ThreadedStreamHandler errStream;
    +        private boolean isOnTheList = false;
    +
    +        @Stellar(name="EXEC_SCRIPT",
    +                description = "Executes an external shell function via stellar.",
    +                params = {
    +                        "exec - the executing cmd (ie. bash, sh, python)",
    +                        "name - name of the script, located in /scripts " +
    +                                "Do NOT include any special chars except(_), Do include
file extension"
    +                },
    +                returns = "the return value of the function"
    +        )
    +
    +	    @Override
    +        public Object apply(List<Object> args, Context context) throws ParseException
{
    +            String exec = "";
    +            String name = "";
    +            String path = "";
    +
    --- End diff --
    
    Do we need to do:
    Optional<Object> console =  context.getCapability(CONSOLE, true);
    
    to make sure we have console for this?
    
    see: ShellFunctions.java


> Add stellar keywords for executing local commands
> -------------------------------------------------
>
>                 Key: METRON-571
>                 URL: https://issues.apache.org/jira/browse/METRON-571
>             Project: Metron
>          Issue Type: Improvement
>            Reporter: Jon Zeolla
>            Priority: Minor
>         Attachments: ExternalFunctions.java, ExternalFunctionsTest.java
>
>
> Stellar should have the ability to execute scripts on a server in order to undertake
automated mitigation or alerting.  Perhaps SHELL_EXEC?



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