Changeset 15373 for gli

Timestamp:

2008-05-09T14:41:48+12:00 (16 years ago)

Author:

ak19

Message:

1. FedoraLogin loops on exception; 2. When using FLI and GS server is not remote, gsdl.xml file is written into Fedora server end telling it the location of the Greenstone collect directory containing the FedoraMETS to be ingested

File:

• gli/trunk/src/org/greenstone/gatherer/Gatherer.java (modified) (2 diffs)

gli/trunk/src/org/greenstone/gatherer/Gatherer.java

@@ -81 +81 @@
         * change the regex in the gs3-release-maker code and in this message
         */
+
     static final public String PROGRAM_VERSION = "svn-trunk";
 
@@ -853 +854 @@
         }
     }
+    
+    boolean showLogin = true;
+ 
+    do {
+        if(!dialog.loginRequested()) { // user pressed cancel to exit the FedoraLogin dialog
+        System.exit(0);
+        } else {
+        showLogin = dialog.loginRequested();
+        String hostname = dialog.getHostname();
+        String port     = dialog.getPort();
+        String username = dialog.getUsername();
+        String password = dialog.getPassword();
+        String protocol = dialog.getProtocol();
         
-    if (dialog.loginRequested()) {
-
-        String hostname = dialog.getHostname();
-        String port     = dialog.getPort();
-        String username = dialog.getUsername();
-        String password = dialog.getPassword();
-        String protocol = dialog.getProtocol();
-
-        Configuration.fedora_info.setHostname(hostname);
-        Configuration.fedora_info.setPort(port);
-        Configuration.fedora_info.setUsername(username);
-        Configuration.fedora_info.setPassword(password);
-        Configuration.fedora_info.setProtocol(protocol);
-
-        String ping_url_str = protocol + "://" + hostname + ":" + port + "/fedora";
-        String login_str = username + ":" + password;
+        Configuration.fedora_info.setHostname(hostname);
+        Configuration.fedora_info.setPort(port);
+        Configuration.fedora_info.setUsername(username);
+        Configuration.fedora_info.setPassword(password);
+        Configuration.fedora_info.setProtocol(protocol);
         
-        String login_encoding = new sun.misc.BASE64Encoder().encode(login_str.getBytes());
-
-
-        try {
-        URL ping_url = new URL(ping_url_str);
-        URLConnection uc = ping_url.openConnection();
-        uc.setRequestProperty  ("Authorization", "Basic " + login_encoding);
-        // Attempt to access some content ...
-        InputStream content = (InputStream)uc.getInputStream();
-
-        }
-        catch (Exception exception) {
-        System.err.println("****");
-        System.err.println("* Failed to connect to Fedora server.");
-        System.err.println("* Server might not be running, or incorrect username and/or password.");
-        System.err.println("***");
-        DebugStream.printStackTrace(exception);
-        System.exit(1);
-        }
-    }
-    else {
-        System.exit(0);
-    }
-
-
-    dialog.dispose();
-    dialog = null;
-
-
+        String ping_url_str = protocol + "://" + hostname + ":" + port + "/fedora";
+        String login_str = username + ":" + password;
+        
+        String login_encoding = new sun.misc.BASE64Encoder().encode(login_str.getBytes());
+                
+        try {
+            URL ping_url = new URL(ping_url_str);
+            URLConnection uc = ping_url.openConnection();
+            uc.setRequestProperty  ("Authorization", "Basic " + login_encoding);
+            // Attempt to access some content ...
+            InputStream content = (InputStream)uc.getInputStream();
+            
+            // if no exception occurred in the above, we would have come here:
+            showLogin = false;
+            dialog.dispose();
+        }
+        catch (Exception exception) {
+            String[] errorMessage = {"Failed to connect to the Fedora server.", "It might not be running, or",
+                         "incorrect username and/or password."};
+            dialog.setErrorMessage(errorMessage);
+            DebugStream.printStackTrace(exception);
+            // exception occurred, show the dialog again (do this after printing to
+            // debugStream, else the above does not get done for some reason).
+            dialog.setVisible(true);
+        }
+        } 
+    } while(showLogin);
+
+    dialog = null; // no more need of the dialog
+    
+    // Now we are connected. Need to tell fedora where to find the FedoraMETS
+    // files for ingestion
+
+    //Fedora needs an xml file: 
+    // FEDORA_HOME/tomcat/conf/Catalina/<fedora-hostname OR localhost>/gsdl.xml 
+    // (which is to be wherever fedora.xml is situated) in order to know where
+    // to get the collection contents from. 
+    writeGsdlXmlFile();
+
+    }
+
+    /** Fedora needs an xml file: 
+     *  FEDORA_HOME/tomcat/conf/Catalina/[fedora-hostname OR localhost]/gsdl.xml 
+     * (host folder is the one wherever fedora.xml is found) in order to know where
+     * to get the collection contents from.
+     * This method generates the necessary gsdl.xml file which points Fedora to the
+     * parent of the collect folder.
+    */
+    private static void writeGsdlXmlFile() {
+    // System.getenv(FEDORA_HOME) is deprecated in Java v4 (but is back in v5). 
+    // But fedora_info.getHome() will return FEDORA_HOME. 
+
+    // To do the following, we actually need to stop and restart the Fedora server. 
+    // Why should FLI have to do all this, or even know that it needs doing?
+    String execExtension = Utility.isWindows() ? "bat" : "sh";
+    String fedoraProcess = Configuration.fedora_info.getHome()+"tomcat"
+        +File.separator+"bin"+File.separator;
+    String fedoraStop = fedoraProcess+"shutdown."+execExtension;
+    String fedoraStart = fedoraProcess+"startup."+execExtension;
+    String errorMessage = "";
+    
+    try{
+        // (1) stop the fedora server
+        errorMessage = "Failed to stop the fedora server.";
+
+        Process process = Runtime.getRuntime().exec(fedoraStop);
+        System.err.println("*****Stopping the fedora server: " + fedoraStop);
+        int exitValue = -1;
+        if((exitValue = process.waitFor()) != 0) {
+        throw new Exception(errorMessage);
+        }
+        System.out.println("Exit value is: " + exitValue);
+        
+        // (2) See if the folder for the host contains fedora.xml, if it doesn't, 
+        // then don't write gsdl.xml in there, try folder "localhost" instead
+        String pathPrefix = Configuration.fedora_info.getHome()+"tomcat"+File.separator+"conf"
+        +File.separator+"Catalina";
+        String gsdlHostFolderPath = pathPrefix+File.separator+Configuration.fedora_info.getHostname();
+        File fedoraXML = new File(gsdlHostFolderPath,"fedora.xml");
+        if(!fedoraXML.exists()) { 
+        // prepare the errorMessage just in case we need it
+        errorMessage = "Directory " + gsdlHostFolderPath + " is the wrong place to put"
+            + " the crucial gsdl.xml file as it doesn't contain the example file fedora.xml\n";
+            
+        // no default fedora.xml file in the folder we want to write gsdl.xml to
+        // so we may be in the wrong place
+        if(Configuration.fedora_info.getHostname().equals("localhost")) { 
+            // if we just tried localhost and then failed
+            // we can't continue
+            fedoraXML = null;
+            throw new Exception(errorMessage);          
+        } else { 
+            System.err.println("*** Folder " + gsdlHostFolderPath 
+            +"\nis the wrong location for gsdl.xml. Trying folder localhost.");
+            // we just tried a folder of a different hostname, 
+            // let's try "localhost" as a last ditch effort
+            gsdlHostFolderPath = pathPrefix+File.separator+"localhost";
+            fedoraXML = new File(gsdlHostFolderPath,"fedora.xml");
+            if(!fedoraXML.exists()){
+            fedoraXML = null;
+            throw new Exception(errorMessage);
+            } // else we found the location for gsdl.xml
+        }
+        }
+
+        // If we made it here, we found the correct folder to write gsdl.xml to
+        errorMessage = "";
+        fedoraXML = null;
+        File gsdlXMLPath = new File(gsdlHostFolderPath);
+        if(!gsdlXMLPath.exists()) {
+        // make sure all the intermediate directories exist 
+        // (should be the case when fedoraXML exists in it)
+        gsdlXMLPath.mkdirs();
+        }
+        String gsdlXMLFile = gsdlXMLPath+File.separator+"gsdl.xml";
+        
+        // (3) We write xml out containing the location of the parent folder of the collect dir
+        String collectParent = Configuration.gsdl_path;
+        if(Gatherer.GS3){ // Collect dir's parent folder is web/sites/localsite, which is GSDL3HOME/sites/localsite
+        collectParent = Configuration.gsdl3_path+"sites"+File.separator+"localsite";
+        }
+        System.err.println("****CollectParent folder: " + collectParent + "\n****gsdlXMLFile: " + gsdlXMLFile);
+        
+        // The contents we are going to write out to the file: <Context docBase="collectParent" path="/gsdl"></Context>
+        // Does Fedora expect a / in the path to gsdl, does Fedora deal with "/gsdl" or do I need to use a File.separator?
+        String contents = "<?xml version='1.0' encoding='utf-8'?>\n<Context docBase=\""
+        +collectParent+"\" path=\""+File.separator+"gsdl\"></Context>"; 
+        
+        // even if the file exists, we overwrite it, because we may have changed GS versions 
+        // and collect dir would have changed though there'd still be a gsdl.xml file
+        errorMessage =  "Failed to create the essential file: " + gsdlXMLFile;
+        java.io.OutputStream gsdlXMLFileOut = new java.io.FileOutputStream(gsdlXMLFile);
+        gsdlXMLFileOut.write(contents.getBytes());
+        gsdlXMLFileOut.close();
+        gsdlXMLFileOut = null;
+        
+        // Otherwise, restart the fedora server again
+        errorMessage = "Failed to stop the fedora server.";
+        process = Runtime.getRuntime().exec(fedoraStart);
+        System.err.println("*****Restarting the fedora server: " + fedoraStart);
+        if((exitValue = process.waitFor()) != 0) {
+        throw new Exception(errorMessage);
+        }
+        System.out.println("Exit value is: " + exitValue);
+    }catch(Exception e){
+        System.err.println("****");
+        System.err.println("* " + errorMessage + "\n" + e.getMessage());
+        System.err.println("***");
+        e.printStackTrace();
+        DebugStream.printStackTrace(e);
+        // We can't continue, so we exit
+        System.exit(1);     
+    }       
     }