Difference between revisions of "Shell-call"

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To use an ''excelreader-call'' in a {{GVESB}} service, you need to define a node of type [[GVOperationNode]] in [[Service section]] and define in the field ''operation-name'' the name defined in ''excelreader-call'' operation.
 
To use an ''excelreader-call'' in a {{GVESB}} service, you need to define a node of type [[GVOperationNode]] in [[Service section]] and define in the field ''operation-name'' the name defined in ''excelreader-call'' operation.
  
−
The following example shows the configuration generated from {{L_VULCON}} or {{L_GVCONSOLE}} when you configure an ''excelreader-call'' operation in {{GVESB}} service:
+
The following example shows the configuration generated from {{L_VULCON}} or {{L_GVCONSOLE}} when you configure an ''shell-call'' operation in {{GVESB}} service:
  
 
<syntaxhighlight lang="XML"><?xml version="1.0" encoding="UTF-8"?>
 
<syntaxhighlight lang="XML"><?xml version="1.0" encoding="UTF-8"?>
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                           out-check-type="none" type="operation">
 
                           out-check-type="none" type="operation">
 
                     <Participant id-channel="CHANNEL-NAME" id-system="SYSTEM-NAME"/>
 
                     <Participant id-channel="CHANNEL-NAME" id-system="SYSTEM-NAME"/>
−
                     <Flow first-node="excel_reader" point-x="20" point-y="112">
+
                     <Flow first-node="less_log_file" point-x="20" point-y="112">
 
                         <GVOperationNode class="it.greenvulcano.gvesb.core.flow.GVOperationNode"
 
                         <GVOperationNode class="it.greenvulcano.gvesb.core.flow.GVOperationNode"
−
                                         id="excel_reader" id-system="DAMA"
+
                                         id="shell-call" id-system="YOUR_SYSTEM"
 
                                         input="input" next-node-id="end"
 
                                         input="input" next-node-id="end"
 
                                         op-type="call"
 
                                         op-type="call"
−
                                         operation-name="ReadExcelInput"
+
                                         operation-name="less_file"
−
                                         output="excel_xml" point-x="158"
+
                                         output="output" point-x="158"
 
                                         point-y="112" type="flow-node"/>
 
                                         point-y="112" type="flow-node"/>
 
                         <GVEndNode class="it.greenvulcano.gvesb.core.flow.GVEndNode"
 
                         <GVEndNode class="it.greenvulcano.gvesb.core.flow.GVEndNode"
 
                                   end-business-process="yes" id="end" op-type="end"
 
                                   end-business-process="yes" id="end" op-type="end"
−
                                   output="excel_xml" point-x="358" point-y="112"
+
                                   output="output" point-x="358" point-y="112"
 
                                   type="flow-node"/>
 
                                   type="flow-node"/>
 
                     </Flow>
 
                     </Flow>
Line 65: Line 65:
  
  
−
At this point you have configured a service with an ''excelreader-call'' operation.
+
At this point you have configured a service with an ''shell-call'' operation.
  
  

Revision as of 10:18, 20 January 2012

Definition

Many IT applications, within their business process, need to invoke shell command. Gvvcl-shell plug-in can be used to invoke command shell. It is very simple to configure.

GreenVulcano® ESB provides two different tools, GV Console® and VulCon®, to configure all supported plug-ins in GV services.

VulCon / GV Console Configuration

shell-call is the operation that must be configured into VulCon® or GV Console® System section, to invoke command shell In order to add an operation shell-call you must define the following fields:

  • class: it.greenvulcano.gvesb.virtual.shell.ShellCallOperation (java class that manage shell-call invocation).
  • name: this field identify the operation name that you will use in service definition.
  • directory: Pathname of the directory in which the command is executed.
  • encoding: The encoding with which encode the output of the command in the body of GVBuffer.If not specified, is used the the 'file.encoding' system property value.


The following example shows the configuration generated from VulCon® or GV Console® when you configure a shell-call operation: 

<?xml version="1.0" encoding="UTF-8"?>
<Channel id-channel="CHANNEL-NAME">
    <shell-call class="it.greenvulcano.gvesb.virtual.shell.ShellCallOperation"
      directory="/home/greenvulcano/script" name="less_file"
      type="call">
     <cmd>less greenvulcano.log</cmd>
    </shell-call>
</Channel>


To use an excelreader-call in a GreenVulcano® ESB service, you need to define a node of type GVOperationNode in Service section and define in the field operation-name the name defined in excelreader-call operation.

The following example shows the configuration generated from VulCon® or GV Console® when you configure an shell-call operation in GreenVulcano® ESB service: 

<?xml version="1.0" encoding="UTF-8"?>
<GVServices name="SERVICES" type="module">
    <Groups>
        <Group group-activation="on" id-group="DEFAULT_GRP"/>
    </Groups>
    <Services>
        <Service group-name="DEFAULT_GRP" id-service="SERVICE-NAME"
                 service-activation="on">
            <Client id-system="SYSTEM-NAME" statistics="off" system-activation="on">
                <Operation name="RequestReply" operation-activation="on"
                           out-check-type="none" type="operation">
                    <Participant id-channel="CHANNEL-NAME" id-system="SYSTEM-NAME"/>
                    <Flow first-node="less_log_file" point-x="20" point-y="112">
                        <GVOperationNode class="it.greenvulcano.gvesb.core.flow.GVOperationNode"
                                         id="shell-call" id-system="YOUR_SYSTEM"
                                         input="input" next-node-id="end"
                                         op-type="call"
                                         operation-name="less_file"
                                         output="output" point-x="158"
                                         point-y="112" type="flow-node"/>
                        <GVEndNode class="it.greenvulcano.gvesb.core.flow.GVEndNode"
                                   end-business-process="yes" id="end" op-type="end"
                                   output="output" point-x="358" point-y="112"
                                   type="flow-node"/>
                    </Flow>
                </Operation>
            </Client>    
        </Service>
    </Services>
</GVServices>


At this point you have configured a service with an shell-call operation.


Example

This example shows an XML document generated by a simple Excel sheet (without cols and rows grouping). Given an Excel sheet with the following structure:

ID1 ID2 ID3 ID4 ID5 ID6 ID7
23 23232 23 23333 1 2 3
24 24444 23 23332 1 2 3

excelreader-call generates the following XML: 

<?xml version="1.0" encoding="UTF-8"?>
<workbook>
    <sheet number="0">
        <name><![CDATA[Foglio1]]></name>
        <row number="0">
            <col number="0">
                <data><![CDATA[ID1]]></data>
            </col>
            <col number="1">
                <data><![CDATA[ID2]]></data>
            </col>
            <col number="2">
                <data><![CDATA[ID3]]></data>
            </col>
            <col number="3">
                <data><![CDATA[ID4]]></data>
            </col>
            <col number="4">
                <data><![CDATA[ID5]]></data>
            </col>
            <col number="5">
                <data><![CDATA[ID6]]></data>
            </col>
            <col number="6">
                <data><![CDATA[ID7]]></data>
            </col>
        </row>
        <row number="1">
            <col number="0">
                <data><![CDATA[23]]></data>
            </col>
            <col number="1">
                <data><![CDATA[23232]]></data>
            </col>
            <col number="2">
                <data><![CDATA[23]]></data>
            </col>
            <col number="3">
                <data><![CDATA[711]]></data>
            </col>
            <col number="4">
                <data><![CDATA[1]]></data>
            </col>
            <col number="5">
                <data><![CDATA[1]]></data>
            </col>
            <col number="6">
                <data><![CDATA[1]]></data>
            </col>
        </row>
        <row number="2">
            <col number="0">
                <data><![CDATA[23]]></data>
            </col>
            <col number="1">
                <data><![CDATA[711]]></data>
            </col>
            <col number="2">
                <data><![CDATA[23]]></data>
            </col>
            <col number="3">
                <data><![CDATA[23232]]></data>
            </col>
            <col number="4">
                <data><![CDATA[1]]></data>
            </col>
            <col number="5">
                <data><![CDATA[1]]></data>
            </col>
            <col number="6">
                <data><![CDATA[1]]></data>
            </col>
        </row>
    </sheet>
</workbook>

With a ChangeGvBufferNode is possible parsing XML and retrieve any tag and value.

--A.sicignano 16:30, 19 January 2012 (CET)

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