001    /**
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  You may obtain a copy of the License at
008     *
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the License for the specific language governing permissions and
015     * limitations under the License.
016     */
017    package org.apache.camel.component.printer;
018    
019    import java.io.InputStream;
020    
021    import javax.print.DocFlavor;
022    import javax.print.DocPrintJob;
023    import javax.print.PrintException;
024    import javax.print.PrintService;
025    import javax.print.PrintServiceLookup;
026    import javax.print.attribute.HashPrintRequestAttributeSet;
027    import javax.print.attribute.PrintRequestAttributeSet;
028    import javax.print.attribute.standard.Copies;
029    
030    import org.apache.camel.Endpoint;
031    import org.apache.camel.Exchange;
032    import org.apache.camel.impl.DefaultProducer;
033    import org.apache.commons.logging.Log;
034    import org.apache.commons.logging.LogFactory;
035    
036    public class PrinterProducer extends DefaultProducer {
037        private static final transient Log LOG = LogFactory.getLog(PrinterProducer.class);
038        Endpoint endpoint;
039        PrinterConfiguration config;
040        PrinterOperations printerOperations;
041        PrintService printService;
042        String printer;
043        
044        public PrinterProducer(Endpoint endpoint, PrinterConfiguration config) throws Exception {
045            super(endpoint);
046            this.endpoint = endpoint;
047            this.config = config;
048            this.printService = assignPrintService();
049            this.printerOperations = new PrinterOperations(printService, assignPrintJob(printService), assignDocFlavor(), assignPrintAttributes());
050        }
051    
052        @Override
053        protected void doStart() throws Exception {
054            LOG.info("In PrinterProducer.start()");
055            super.doStart();
056        }
057    
058        @Override
059        protected void doStop() throws Exception {
060            LOG.info("In PrinterProducer.stop()");
061            super.doStop();
062        }
063    
064        public void process(Exchange exchange) throws Exception {
065            LOG.info("In printerProducer.print()");
066            Object body = exchange.getIn().getBody();
067            InputStream is = exchange.getContext().getTypeConverter().convertTo(InputStream.class, body);
068            print(is);
069        }
070        
071        private void print(InputStream body) throws PrintException { 
072            if (printerOperations.getPrintService().isDocFlavorSupported(printerOperations.getFlavor())) {
073                PrintDocument printDoc = new PrintDocument(body, printerOperations.getFlavor());        
074                printerOperations.print(printDoc, config.getCopies(), config.isSendToPrinter(), config.getMimeType()); 
075            }
076        }
077    
078        private DocFlavor assignDocFlavor() throws Exception {
079            return config.getDocFlavor();      
080        }    
081    
082        private PrintRequestAttributeSet assignPrintAttributes() throws PrintException {
083            PrintRequestAttributeSet printRequestAttributeSet = new HashPrintRequestAttributeSet();
084            if (config.getCopies() >= 1) {
085                printRequestAttributeSet.add(new Copies(config.getCopies()));
086            } else {
087                throw new PrintException("Number of print copies should be greater than zero");
088            }
089            printRequestAttributeSet.add(config.getMediaSizeName());
090            printRequestAttributeSet.add(config.getInternalSides());
091            
092            return printRequestAttributeSet;
093        }
094        
095        private DocPrintJob assignPrintJob(PrintService printService) {
096            return printService.createPrintJob(); 
097        }
098        
099        private PrintService assignPrintService() throws PrintException {
100            PrintService printService;
101            
102            if ((config.getHostname().equalsIgnoreCase("localhost")) 
103                && (config.getPrintername().equalsIgnoreCase("/default"))) {
104                printService = PrintServiceLookup.lookupDefaultPrintService();            
105            } else {
106                PrintService[] services = PrintServiceLookup.lookupPrintServices(null, null);
107                setPrinter("\\\\" + config.getHostname() + "\\" + config.getPrintername());
108                int position = findPrinter(services, printer);
109                if (position < 0) {
110                    LOG.error("PrintServiceLookup failed. No printer found with the Printer Name: " + printer);
111                    throw new PrintException("Printer Lookup Failure. Please verify that the host and printer are registered and reachable from this machine");
112                }         
113                printService = services[position];
114            }
115            // LOG.info("PrintServiceLookup succeeded. PrintService located at " + printService.getName());
116            return printService;
117        }
118        
119        private int findPrinter(PrintService[] services, String printer) {
120            boolean found = false;
121            int position = -1;
122            for (int i = 0; (i < services.length) && (!found); i++) {
123                if (printer.equalsIgnoreCase(services[i].getName())) {
124                    found = true;
125                    position = i;
126                }
127            }
128            
129            return position;
130        }
131    
132        public Endpoint getEndpoint() {
133            return endpoint;
134        }
135    
136        public void setEndpoint(Endpoint endpoint) {
137            this.endpoint = endpoint;
138        }
139    
140        public PrinterConfiguration getConfig() {
141            return config;
142        }
143    
144        public void setConfig(PrinterConfiguration config) {
145            this.config = config;
146        }
147    
148        public PrinterOperations getPrinterOperations() {
149            return printerOperations;
150        }
151    
152        public void setPrinterOperations(PrinterOperations printerOperations) {
153            this.printerOperations = printerOperations;
154        }
155    
156        public PrintService getPrintService() {
157            return printService;
158        }
159    
160        public void setPrintService(PrintService printService) {
161            this.printService = printService;
162        }
163    
164        public String getPrinter() {
165            return printer;
166        }
167    
168        public void setPrinter(String printer) {
169            this.printer = printer;
170        }
171        
172        
173    }