[jira] [Created] (CAMEL-12890) Camel Printer unable to print to the network printer

[kalyan kumar bandi (JIRA)]

kalyan kumar bandi created CAMEL-12890:
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             Summary: Camel Printer unable to print to the network printer
                 Key: CAMEL-12890
                 URL: https://issues.apache.org/jira/browse/CAMEL-12890
             Project: Camel
          Issue Type: Bug
          Components: camel-printer
    Affects Versions: 2.17.0
         Environment:  

Camel version 2.17.0

OS - RHEL Linux 

Running as a standalone application with only following dependencies
 * camel-core
 * camel-spring
 * camel-printer

 
            Reporter: kalyan kumar bandi
         Attachments: testCamelPrinter.xml

Hi,

We have developed a camel route to print a PDF file to a network printer that 
is configured on the machine. The route looks as follows:

 

<route id="_route1">
 <from uri="file:/opt/user/data?fileName=test.PDF&amp;noop=true"/>
 <to 
uri="lpr://1.2.3.4/B4-2nd-floor-right-wing?copies=1&amp;sides=Sides.ONE_SIDED&amp;mimeType=PDF&amp;mediaSize=na-letter&amp;flavor=DocFlavor.INPUT_STREAM&amp;sendToPrinter=true"/>
 </route>

 

When this route is executed we see the following error:

org.apache.camel.FailedToCreateProducerException: Failed to create Producer for 
endpoint: 
Endpoint[lpr://1.2.3.4:9100/B4-2nd-floor-right-wing?copies=1&flavor=DocFlavor.INPUT_STREAM&mediaSize=na-letter&mediaTray=AUTOSENSE&mimeType=PDF&orientation=portrait&sendToPrinter=true&sides=one-sided].
 Reason: javax.print.PrintException: No printer found with name: 
1.2.3.4/B4-2nd-floor-right-wing. Please verify that the host and printer are 
registered and reachable from this machine.

 

With DEBUG logs enabled, i can that it is using the following printer name.

2018-10-17 21:01:05,628 | DEBUG | xtenderThread-26 | PrinterProducer            
      | 794 - org.apache.camel.camel-core - 2.17.0.redhat-630310 | Using 
printer name: 1.2.3.4/B4-2nd-floor-right-wing

 

After more debugging came across the following code in PrinterProducer.java in 
camel-printer component

private int findPrinter(PrintService[] services, String printer) {
 int position = -1;
 for (int i = 0; i < services.length; i++) {
 if (services[i].getName().toLowerCase().endsWith(printer.toLowerCase())) {
 position = i;
 break;
 }
 }
 return position;
 }

Printer services configured on the machine are:
 * B4-2nd-floor-right-wing
 * B4-2nd-floor-left-wing
 * B4-1st-floor-right-wing
 * B4-1st-floor-left-wing

 

Here the if block condition

{color:#FF0000}services[i].getName().toLowerCase().endsWith(printer.toLowerCase()){color}
 will always evaluate to false. Because my service name is 
"B4-2nd-floor-right-wing" and printerName in the URI is 
"1.2.3.4/B4-2nd-floor-right-wing" so what you are checking is:

{color:#FF0000}if 
("B4-2nd-floor-right-wing".toLowerCase().endsWith("1.2.3.4/B4-2nd-floor-right-wing".toLowerCase()){color}
 which is always false

 

If  i change the condition to 
("1.2.3.4/B4-2nd-floor-right-wing".toLowerCase().endsWith("B4-2nd-floor-right-wing".toLowerCase())
 then it works fine

 

I took the latest version (2.23.0-SNAPSHOT) from github which is also having 
the same condition. Modified the single line and ran my route and it worked 
fine. 

 

Note that the issue happens only when trying with remote printer and with local 
printer it works fine. I tested with local printer in my windows PC and it 
worked fine but none (Windows/Linux) worked with remote printer configuration.

 

Thanks,

Kalyan



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