...
When used with an InOut MEP, the Exec components executes the command and get the command output buffer. The command output is put in the out message and send back in the exchange.
Abstract WSDL
ServiceMix Exec endpoint exposes an abstract WSDL (in
...
the endpoint descriptor) to define the format of exchanged message.
Code Block | ||||
---|---|---|---|---|
| ||||
<message>
<command>ls</command>
<arguments>
<argument>-l</argument>
<argument>/tmp</argument>
</arguments>
</message>
|
Note |
---|
If the in message doesn't contain the command tag, Exec component uses the command attribute provided in the xbean.xml. If no command is provided in the in message and in the xbean.xml, the component throws an exception and the exchange fails. |
Note |
---|
You can support any message format by defining your own exec marshaler implementation. The endpoint supports a marshaler attribute where you can define your class that implements the ExecMarshalerSupport interface. |
Exec out message format
When used with an InOut MEP, the Exec return the command execution output into the out message. The out message content looks like:
Code Block | ||
---|---|---|
xml | xml | <result> <started>1241756756376</started> <finished>1241756756390</finished> <duration>14</duration> <exitcode>0</exitcode> <output><![CDATA[ total 6729 -rw------- 1 jb jb 1693752 2009-04-09 09:07 f9G0lWzx.tar.part -rw-r--r-- 1 jb jb <?xml version="1.0" encoding="UTF-8"?> <!-- 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. --> <wsdl:definitions name="servicemix-exec" targetNamespace="http://servicemix.apache.org/exec" xmlns:tns="http://servicemix.apache.org/exec" xmlns:wsdl='http://schemas.xmlsoap.org/wsdl/' xmlns:xsd="http://www.w3.org/2001/XMLSchema"> <wsdl:types> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" targetNamespace="http://servicemix.apache.org/exec" xmlns:tns="http://servicemix.apache.org/exec" attributeFormDefault="unqualified" elementFormDefault="unqualified"> <xs:complexType name="execRequest"> <xs:sequence> <xs:element name="command" type="xs:string" minOccurs="0"/> <xs:element name="arguments" minOccurs="0"> <xs:complexType> <xs:sequence> <xs:element name="argument" type="xs:string" minOccurs="0" maxOccurs="unbounded"/> </xs:sequence> </xs:complexType> </xs:element> </xs:sequence> </xs:complexType> <xs:complexType name="execResponse"> <xs:sequence> <xs:element name="endTime" type="xs:long"/> <xs:element name="errorData" type="tns:stringBuffer" minOccurs="0"/> <xs:element name="executionDuration" type="xs:long"/> 8 2009-03-27 18:27 gnome-session-manager srwxr-xr-x 1 jb<xs:element name="exitCode" type="xs:int"/> jb <xs:element name="outputData" type="tns:stringBuffer" minOccurs="0 2009-03-26 10:56 gnome-system-monitor.jb.3619273851 drwxr-xr-x 2 jb "/> <xs:element name="startTime" type="xs:long"/> </xs:sequence> </xs:complexType> <xs:complexType name="stringBuffer" final="extension restriction"> <xs:complexContent> <xs:extension base="tns:abstractStringBuilder"> <xs:sequence/> </xs:extension> </xs:complexContent> </xs:complexType> <xs:complexType name="abstractStringBuilder" abstract="true"> <xs:sequence/> </xs:complexType> </xs:schema> </wsdl:types> <wsdl:message name="execRequest"> <wsdl:part name="parameters" element="tns:execRequest"/> </wsdl:message> <wsdl:message name="execResponse"> jb <wsdl:part name="parameters" element="tns:execResponse"/> 1024 2009-04-23 08:43 hsperfdata_jb drwxr-xr-x 2 jboss java </wsdl:message> <wsdl:portType name="ExecPortType"> 1024 2009-04-17 12<wsdl:46 hsperfdata_jboss drwxr-xr-x 2 weblogic javaoperation name="execute"> 1024 2009-04-17 09<wsdl:40 hsperfdata_weblogic -rw-r--r-- 1 jbinput message="tns:execRequest"/> <wsdl:output message="tns:execResponse"/> jb </wsdl:operation> </wsdl:portType> 870 2009-03-26 10:59 jbi12672.zip -rw-r--r-- 1 jb jb 870 2009-03-26 10:59 jbi12673.zip ]]></output> <error><![CDATA[ ]]></error> </result> |
What does the tags contain
</wsdl:definitions>
|
Note |
---|
It's possible to expose an Exec endpoint directly using a SOAP compliant BC such as ServiceMix HTTP or ServiceMix CXF-BC. |
Note |
---|
An exec endpoint expects an ExecRequest message and provide an ExecResponse. The way to marshal/unmarshal ExecRequest and ExecResponse can be override by defining your own ExecMarshaler. |
ExecRequest
The ExecRequest describes the command to execute with or without arguments. The arguments can be append directly on the command or using the dedicated attributes.
Note |
---|
If the ExecRequest is empty (without command provided), the Exec endpoint will use the static command provided in the xbean.xml (using the command attribute). If no command is provided (neither in the ExecRequest and in the xbean.xml), the Exec endpoint throws an exception and the exchange fails. |
The ExecRequest defines the following attributes:
No Format |
---|
command - the command to execute (for example ls). The command arguments can be provided directly here (for example ls -lt).
arguments - the command arguments.
|
Here is an example of ExecRequest:
Code Block | ||||
---|---|---|---|---|
| ||||
<?xml version="1.0" encoding="UTF-8"?>
<exec:execRequest xmlns:exec="http://servicemix.apache.org/exec">
<command>ls</command>
<arguments>
<argument>-lt</argument>
<argument>/tmp</argument>
<arguments>
</exec:execRequest>
{code:xml}
h4. ExecResponse
When used with an InOut MEP, the Exec endpoint returns an ExecResponse. The ExecResponse contains all information about the command execution.
{noformat} | ||||
No Format | ||||
started - contains the execution start time in millis (System.currentTimeMillis() is used). finished - contains the time the process execution finished in millis (System.currentTimeMillis() is used). duration - the duration in millis the execution took. exitcode - the return code of the process (0 means all fine; != 0 means an error code). output - the contents of the output stream of the process. error - the contents of the error stream of the process. Some words on the output and error stream contents. It may happen that some information at the very beginning will get lost depending on how fast the stream listeners are set up and how fast the executed process will push information to it. {noformat} Here is an example of an ExecResponse: {code:xml} <?xml version="1.0" encoding="UTF-8"?> <exec:execResponse xmlns:exec="http://servicemix.apache.org/exec"> <started>1241756756376</started> <finished>1241756756390</finished> <duration>14</duration> <exitcode>0</exitcode> <output><![CDATA[ total 6729 -rw------- 1 jb jb 1693752 2009-04-09 09:07 f9G0lWzx.tar.part -rw-r--r-- 1 jb jb 8 2009-03-27 18:27 gnome-session-manager srwxr-xr-x 1 jb jb 0 2009-03-26 10:56 gnome-system-monitor.jb.3619273851 drwxr-xr-x 2 jb jb 1024 2009-04-23 08:43 hsperfdata_jb drwxr-xr-x 2 jboss java 1024 2009-04-17 12:46 hsperfdata_jboss drwxr-xr-x 2 weblogic java 1024 2009-04-17 09:40 hsperfdata_weblogic -rw-r--r-- 1 jb jb 870 2009-03-26 10:59 jbi12672.zip -rw-r--r-- 1 jb jb 870 2009-03-26 10:59 jbi12673.zip ]]></output> <error><![CDATA[ ]]></error> </exec:execResponse> |
Endpoint
The Exec endpoint can be very simple, waiting for command contained in the in message:
...