JDBC processor used prepared statements and parameters.

hsarback/doc/README.branch

@@ -0,0 +1,3 @@
+TODO
+1. postmap processor
+2. bash shellscript template processor

hsarback/src/de/hsadmin/core/qserv/CommandShell.java

@@ -18,31 +18,31 @@ public class CommandShell {
 		return execute(command, null);
 	}
 
-	public static String execute(String command, String stdInput) throws ShellException {
-		Process backend = null;
-		String callOutput = null;
+	public static String execute(String command, String shellInput) throws ShellException {
+		Process shell = null;
+		String shellOutput = null;
 		int exitCode = 0;
 		try {
 			String logCommand = command;
-			if (stdInput != null)  {
-				logCommand += "<<EOF\n" + stdInput + "EOF";
+			if (shellInput != null)  {
+				logCommand += "<<EOF\n" + shellInput + "EOF";
 			}
 			logCommand += "\n";
 			logger.log(Level.INFO, logCommand);
 			String[] cmdArray = { "/bin/bash", "-c", command };
-			backend = Runtime.getRuntime().exec(cmdArray);
-			if (stdInput != null) {
-				OutputStream stdInputStream = backend.getOutputStream();
-				PrintWriter stdInputWriter = new PrintWriter(stdInputStream);
-				stdInputWriter.print(stdInput);
-				stdInputWriter.close();
-				stdInputStream.close();
+			shell = Runtime.getRuntime().exec(cmdArray);
+			if (shellInput != null) {
+				OutputStream shellStdIn = shell.getOutputStream();
+				PrintWriter shellStdInWriter = new PrintWriter(shellStdIn);
+				shellStdInWriter.print(shellInput);
+				shellStdInWriter.close();
+				shellStdIn.close();
 			}
-			callOutput = readProcessStream(backend.getInputStream());
-			exitCode = backend.waitFor();
+			shellOutput = readProcessStream(shell.getInputStream());
+			exitCode = shell.waitFor();
 			logger.log(Level.INFO, "Return-Code: " + exitCode);
 			if (exitCode != 0) {
-				String aErr = readProcessStream(backend.getErrorStream());
+				String aErr = readProcessStream(shell.getErrorStream());
 				logger.log(Level.SEVERE, aErr);
 				throw new ShellException(aErr);
 			}
@@ -51,8 +51,8 @@ public class CommandShell {
 		} catch (InterruptedException e) {
 			throw new ShellException(e);
 		}
-		if (callOutput != null) {
-			return callOutput.trim();
+		if (shellOutput != null) {
+			return shellOutput.trim();
 		}
 		return null;
 	}

hsarback/src/de/hsadmin/core/qserv/JDBCProcessor.java

@@ -2,6 +2,7 @@ package de.hsadmin.core.qserv;
 
 import java.sql.Connection;
 import java.sql.DriverManager;
+import java.sql.PreparedStatement;
 import java.sql.SQLException;
 import java.sql.Statement;
 import java.util.ArrayList;
@@ -19,8 +20,34 @@ public class JDBCProcessor extends AbstractProcessor {
 	private String url;
 	private String user;
 	private String password;
-	private List<String> sql;
+	private List<SQL> list;
 	private String errorMsg;
+	
+	class SQL {
+
+        private String statement;
+	    private String[] params;
+		
+		public SQL(String statement) {
+			super();
+			this.statement = statement;
+		}
+
+		public SQL(String statement, String[] params) {
+			super();
+			this.statement = statement;
+			this.params = params;
+		}
+
+		public String getStatement() {
+			return statement;
+		}
+
+		public String[] getParams() {
+			return params;
+		}
+		
+	}
 
 	public JDBCProcessor(String driver, String url, String user, String password) {
 		this.driver = driver;
@@ -36,9 +63,15 @@ public class JDBCProcessor extends AbstractProcessor {
 	}
 
 	public void addSQL(String sqlStatement) {
-		if (sql == null)
-			sql = new ArrayList<String>();
-		sql.add(sqlStatement);
+		if (list == null)
+			list = new ArrayList<SQL>();
+		list.add(new SQL(sqlStatement));
+	}
+
+	public void addSQL(String sqlStatement, String[] sqlParams) {
+		if (list == null)
+			list = new ArrayList<SQL>();
+		list.add(new SQL(sqlStatement, sqlParams));
 	}
 
 	public Object process() throws ProcessorException {
@@ -57,19 +90,26 @@ public class JDBCProcessor extends AbstractProcessor {
 				password = config.getProperty("pgsqladmin.password");
 		}
 		if (user == null || password == null) {
-			throw new ProcessorException("database admin-user configuration failed");
+			throw new ProcessorException(
+					"database admin-user configuration failed");
 		}
 		try {
 			Class.forName(driver);
 			c = DriverManager.getConnection(url, user, password);
 			if (c == null)
 				throw new ProcessorException("cannot connect to '" + url + "'");
-			Statement s = c.createStatement();
-			for (String sqlStatement : sql) {
-				s.addBatch(sqlStatement);
-				System.out.println("SQL: " + sqlStatement);
+			for (SQL sql : list) {
+				PreparedStatement s = c.prepareStatement(sql.getStatement());
+				String[] params = sql.getParams();
+				if (params != null) {
+					for (int i = 0; i < params.length; i++) {
+						s.setString(i, params[i]);
+					}
+				}
+				System.out.println("SQL: " + sql.getStatement());
+				s.execute();
 			}
-			return s.executeBatch();
+			return null;
 		} catch (SQLException aSqlExc) {
 			Exception exc = aSqlExc.getNextException();
 			if (exc == null) {
@@ -95,8 +135,8 @@ public class JDBCProcessor extends AbstractProcessor {
 		StringBuffer log = new StringBuffer("JDBCProcessor\n");
 		log.append(url);
 		log.append("\n");
-		for (String s : sql) {
-			log.append(s);
+		for (SQL s : list) {
+			log.append(s.getStatement());
 			log.append("\n");
 		}
 		log.append("Error: ");

hsarback/src/de/hsadmin/core/qserv/PostmapProcessor.java

@@ -0,0 +1,55 @@
+package de.hsadmin.core.qserv;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+
+public class PostmapProcessor extends AbstractProcessor {
+	
+	private static final long serialVersionUID = 506775231401876523L;
+	private HashMap<String, String> operations;
+	private String file;	
+	private String error;		
+
+	public PostmapProcessor(String file) {
+		super();
+		this.file = file;
+	}
+	
+	public void set(String key, String value) {
+	   operations.put(key, value);		
+	}
+
+	public void unset(String key) {
+	   operations.put(key, null);		
+	}
+	
+	@Override
+	public String logInfo() {
+		StringBuffer log = new StringBuffer("Postmap\n");
+		log.append("\nError: ");
+		log.append(error);
+		log.append("\n");
+		return log.toString();
+	}
+
+	@Override
+	public Object process() throws ProcessorException {
+		ArrayList<String> output = new ArrayList<String>();
+		for (String key : operations.keySet()) {
+			String value = operations.get(key);
+			try {
+				if (value == null) {
+					output.add(CommandShell.execute("/usr/sbin/postmap -d " + key + " " + file));
+				} else {
+					output.add(CommandShell.execute("/usr/sbin/postmap -i " + file, key + "\t" + value)); 
+				}
+			} catch (ShellException e) {
+				error = e.getMessage();
+				e.printStackTrace(System.err); // Logging
+				throw new ProcessorException(e);
+			}   
+		}
+		return output;
+	}
+
+}

hsarback/src/de/hsadmin/core/qserv/ShellProcessor.java

@@ -1,5 +1,12 @@
 package de.hsadmin.core.qserv;
 
+import java.io.StringWriter;
+import java.util.HashMap;
+
+import org.apache.commons.lang.CharEncoding;
+import org.apache.velocity.VelocityContext;
+import org.apache.velocity.app.Velocity;
+
 
 /**
  * A ShellProcessor encapsulates a shell command as a Processor.
@@ -10,28 +17,49 @@ public class ShellProcessor extends AbstractProcessor {
 
 	private static final long serialVersionUID = 1L;
 
-	private String aSystemCall;
-	private String aInput;
-	private String aOutput;
-	private String aErrors;
+	private String systemCall;
+	private String input;
+	private String output;
+	private String error;
 
 	public ShellProcessor(String aSystemCall, String aInput) {
-		this.aSystemCall = aSystemCall;
-		this.aInput = aInput;
+		this.systemCall = aSystemCall;
+		this.input = aInput;
 	}
 
 	public ShellProcessor(String aSystemCall) {
-		this.aSystemCall = aSystemCall;
-		this.aInput = null;
+		this.systemCall = aSystemCall;
+		this.input = null;
+	}
+
+	public ShellProcessor(String aTemplate, HashMap<String, Object> templateVars) {
+		this.systemCall = mergeTemplate(aTemplate, templateVars);
+		this.input = null;
+	}
+
+	public ShellProcessor(String aTemplate, HashMap<String, Object> templateVars, String aInput) {
+		this.systemCall = mergeTemplate(aTemplate, templateVars);
+		this.input = aInput;
+	}
+
+	private static String mergeTemplate(String aTemplate,
+			HashMap<String, Object> templateVars) {
+		VelocityContext context = new VelocityContext();
+		for (String key : templateVars.keySet()) {
+			context.put(key, templateVars.get(key));
+		}		
+		StringWriter writer = new StringWriter();
+		Velocity.mergeTemplate(aTemplate, CharEncoding.UTF_8, context, writer);
+		return writer.toString();
 	}
 
 	@Override
 	public Object process() throws ProcessorException {
 		try {
-			aOutput = CommandShell.execute(aSystemCall, aInput);
-			return aOutput;
+			output = CommandShell.execute(systemCall, input);
+			return output;
 		} catch (ShellException aExc) {
-			aErrors = aExc.getMessage();
+			error = aExc.getMessage();
 			aExc.printStackTrace(System.err); // Logging
 			throw new ProcessorException(aExc);
 		}
@@ -40,9 +68,9 @@ public class ShellProcessor extends AbstractProcessor {
 	@Override
 	public String logInfo() {
 		StringBuffer log = new StringBuffer("ShellProcessor\n");
-		log.append(aSystemCall);
+		log.append(systemCall);
 		log.append("\nError: ");
-		log.append(aErrors);
+		log.append(error);
 		log.append("\n");
 		return log.toString();
 	}