SAP PI UDF to unzip attachment

Business requirement is like:

• While triggering SAP-PI’s SOAP web-service from client system, zip attachments will be send along with SOAP Request Payload. Here, please note, one zip per web-service call is in scope.
• This zip attachments has multiple CSV files, which needs to be extracted in SAP’s application directory
• Once unzip is successful, return unzipped zip-File in SOAP-Response Message

To accomplish above business requirements, one Java UDF will be written in Request Message Mapping of SAP-PI’s respective (SOAP-to-File Synchronous Inbound) interface

Here, given example of SAP PI Java UDF (user defined function), has below functionalities:

• To read zip attachment from Request Payload
• Unzip attachment to one SAP application server directory
• Using Dynamic-configuration, return unzipped zip file name

UDF Imports:

• java.util.zip.*

  java.io.ByteArrayInputStream

public String UnZip(String upzipPath, Container container) throws StreamTransformationException{ /* UDF to: 1. Get ZipFile Attachment (i.e. get the input attachment from the source message) 2. Unzip/extract ZipFile to SAP-Application directory 3. Set unzipped attachment name to "FileName" variable using 'DynamicConfiguration' */ //File destDir = new File("/folde1/folde2/folde3/"); File destDir = new File(upzipPath); String resultStr = ""; //To add trace info AbstractTrace trace; trace = container.getTrace(); trace.addInfo("UDF to unzip ZipFile atatchment to the directory " + destDir ); //Get the input attachment from the source message) GlobalContainer globalContainer = container.getGlobalContainer(); InputAttachments inputAttachments = globalContainer.getInputAttachments(); try { //checks for the availability of attachments in the input message if(inputAttachments.areAttachmentsAvailable()){ trace.addInfo("Attachments Available"); //Get the attachmentIds and store it in an Object array Collection