Author: Robert Baindourov

So I’ve been preparing this module to do sftp / ftp / and file system manipulations in groovy.

I’ve got it running as a service in grails, with a page setup for testing.

Its really important that if your testing this class out in windows, you turn off your firewall.

I wasted like 2 hours trying to figure out why I kept getting errors.

Now I would like to turn this functionality into a .jar for standalone execution and injection into other projects.

You will need the ant-jsch.jar and jsch-0.1.33.jar, google guave, and apache commons net.

I some how automagically installed the ant-jsch and jsch jars in a way that doesn’t require import statements.

Credit due to
https://gist.github.com/1135043 for FTP code.
http://groovy-almanac.org/scp-with-groovy-and-antbuilder/ for SCP with ANT trick.
and an article I don’t recall the URL to on google guava for file system manipulation

import groovy.util.AntBuilder
import com.google.common.io.*
import org.apache.commons.net.ftp.FTPClient

class FileService {
def boolean fileSystemMove(String from, String to){

try{
	
	Files.move( new File(from), new File(to) )
	
}catch(Throwable t){

	println 'filesystem error' + t;
	return false
	
}

return true;
		
}


def boolean fileSystemCopy(String from, String to){

try{
	Files.copy( new File(from), new File(to) )
}catch(Throwable t){
	return false
}

return true;

		
}



def boolean sftpCopyTo( String host, String user, String passwd, String destination, String fileurl ){		

def ant = new AntBuilder();

ant.scp(				
	file: fileurl,
	todir:"${user}@${host}:${destination}",
	trust:true,
	verbose:true,						
	password:passwd)
}



def boolean sftpCopyFrom( String host, String user, String passwd, String destination, String fileurl ){
def ant = new AntBuilder();

ant.scp(				
	file: "${user}@${host}:${fileurl}" ,
	todir: destination,
	verbose:true,
	trust:true,
	password:passwd)
}

	
def boolean ftpCopyFrom( String host, String user, String passwd, String destination, String fileurl  ){
try{
	def String fileName = fileurl.split('/')[-1];
	new FTPClient().with {
		connect host
		//enterLocalPassiveMode()
		type(BINARY_FILE_TYPE)
		login user, passwd
		changeWorkingDirectory destination
		def incomingFile = new File(fileurl)
		incomingFile.withOutputStream { ostream -> retrieveFile fileName, ostream }
		disconnect()
	}
	true
}catch (Throwable t) {
	false
}
}

def boolean ftpCopyTo( String host, String user, String passwd, String destination, String fileurl  ){

try{	
	def String fileName = fileurl.split('/')[-1];
	def FTPClient ftp = new FTPClient();
	ftp.connect host
	ftp.type(ftp.BINARY_FILE_TYPE)
	ftp.login user, passwd
	ftp.changeWorkingDirectory destination				
	def InputStream input = new FileInputStream(fileurl);
	ftp.storeFile(fileName , input)
	
	ftp.disconnect()
	true
} catch ( Throwable t ) {
	false
}


}

		
			
	
}

So I saw recently that its quite simple to compile down a groovy script into a .jar file.
http://groovy.codehaus.org/WrappingGroovyScript

I guess that hello world .class file looked something like this in groovy

class HelloWorld {
   static main( args ){
      println "Hello World!"
   }
}

So does that mean I can write code as groovy, and then import the jar as a dependency into a Java project?

I am assuming the answer is yes, because groovy compiles down to the same byte code as Java.

Now the question is, is it better to deliver a stand alone .jar file to my co-worker to execute on the command line, or import into his project as a dependency and call methods on it?

I see finally Java has copied a feature of .NET. All .NET languages compile down to the same byte code.

I really, really, really need to get my honey bunny to be cool, man.
She is just so attached to Glendale, and the Armenian community there-in.

It has made it impossible for me to get her to agree to move up to Silicon Valley.

Just last year, I took her to San Francisco to check out the area, and see if she would like to live there.
Well, today I received yet another job offer from the area, and the magnetic pull to join the other Engineer’s and inovators there is becoming to strong to resist.

Wish me luck, Interwebs, as I try yet again, to convince my honey bunny to be cool.

This is great!
Finally the JVM has been leveraged for over 200 other languages. Scala is one of the more popular ones. Lots of startups talking about it.
But I gotta say, now that I know Grails, and even got paid to learn it, I might just keep on using it.

Yes, sure, there are a lot of things wrong with it, and I can still make a project in PHP faster, but I finally passed that inflection point, where it would be worth while using.

Why in the heck would anyone choose the java platform to build on, idfk.
The compilation process, and project build times, take all the fun out of being a web developer.
Grails goes a long way to breach that gap, from code monkey, to creative genius, but f*me bro, its still boring as heck.
Cleaning, and re-running the application every time I make a change to a domain class, which is quite often on this Agile team that I am on, is super tedious.
Yeah, Yeah, Yeah, it’s nothing like a 6 to 9 minute build that I was experiencing at NBCU, getting eonline.com to work on my system.
But its still irritating, when the sun is shining outside, on a Friday, during summer, and I have to sit in an agile dungeon, and wait for Grails to compile.

PHP, I miss you!

Hi Guys, I have been trying to integrate multiple datasources with grails.

I get a strange error:

nested exception is org.hibernate.cache.NoCachingEnabledException: Second-level cache is not enabled for usage [hibernate.cache.use_second_level_cache | hibernate.cache.use_query_cache] ->> 334 | innerRun in java.util.concurrent.FutureTask$Sync

Anyone out there know the answer? Comment please.