`find . -path ‘*/.svn’ -prune -o -type f -print`

I did something similar some time ago, but forgot the command, so here it is for posterity.

I’ve also tried to pull in some data from other services I use (perhaps not as frequently as I would like) such as Twitter, Facebook and Flickr.  To that end, my recent Twitter tweets are now displayed, together with my Facebook status.  I’ve also pulled in some random images from my public Flickr collection.

Let’s say you can access SERVER_A directly over ssh The service you want to access is on SERVER_B which you can’t access directly via SSH from your local machine. However, you can access SERVER_B from SERVER_A. I’ll assume that you want to access the service locally on port 12345, and that the remove port is port 80. The following command will allow you to access a service on SERVER_B from your local machine.

ssh -Nf -L 12345:SERVER_B:80 username@SERVER_A

The ‘-Nf’ switch says don’t execute a command with this ssh session, and run this ssh process in the background. The first port is the port you want to use locally; the first server is the usually inaccessible remote server you want access to; and the third port is the remote port you want to use. The final argument gives the login to the remotely accessible server you have ssh access to directly.

One caveat to this is if you are trying to access a web site that is defined using Apache virtual hosts. With this command alone, requesting localhost:12345 in Firefox would only direct you to the site that is listening remotely for requests that match ‘localhost’. If you would ordinarily access this site using mysite.server_b, then you need to use that as the address in Firefox on your local machine. Therefore, this needs to be added in /etc/hosts. With that done, you should be able to request mysite.server_b:12345 in Firefox and be directed to the remote “virtual host” site.

Because we use the Webcache, I would need to analyse the Webcache access logs for a representative picture of what people are requesting. However, the Webcache does not use a single log file; it uses rolling log files for each day named <access_log.YYYYMMDD>. Also, Webcache does not use a standardised logfile format, it uses a format unique (as far as I know) to Oracle.

My task was to extract the relevant data from the various logfiles. I was only interested in “pages” from Oracle Portal. In this case, a page is a specific Oracle Portal entity, rather than a more genereal web page as you might think. I wrote a small Perl script to grab the necessary lines from each logfile and write them to a file that I would later process with Analog.

#!/usr/bin/perl

# USE directives
use Time::Local;
use File::Find;
use Cwd;

# -----------------------------------------------

# Get elements of the current datetime
my ($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = gmtime(time);
my $cwd = getcwd();
my $extension;
my $regex;
my $line;
my $pause;
my $thisfile;

# Convert year to four digit YYYY format rather than 'year - 1900'
$year = $year + 1900;

# If the month is January, i.e. $mon == 0, then we need to process log files
# from the previous year as well as the previous month, i.e. December or
# $mon == 12.
if ($mon == 0)
{
  $mon = 12;
  $year -= 1;
}

# Construct logfile extension as YYYYMM where MM is previous MM.
$extension = length($mon) == 1 ? "$year" . "0" . $mon : "$year" . $mon;

# File to output results to.
$outfile = "input.log";

# Regex to match Portal page URIs.
$regex = '^.*\t/portal/page\?_pageid.*$';

# Run File::Find::find() against each file in the current directory.
find(\&get_date, $cwd);

##
# Callback function for File::Find
# This function is called for every file found in $cwd
##
sub get_date
{
  my $line;
  my @output_list;
  my @input_list;

  # only read log files for previous month
  if ($File::Find::name =~ /access_log\.$extension.*$/)
  {
    $thisfile = $File::Find::name;

    # test whether the file we are looking at is a compressed
    # file or not
    if ((substr($File::Find::name, -1)) eq "Z")
    {
      # if it is compressed, uncompress it and
      # take name of file without .Z as the file
      # to operate on afterwards
      print "Uncompressing $File::Find::name...";
      system("uncompress $File::Find::name");
      $thisfile = substr($File::Find::name, 0, -2);
    }
    print "$thisfile\n";
    open(IN_FILE, $thisfile) or die ("Cannot Open File: $!\n");
    open(OUT_FILE, ">>$outfile") or die ("Cannot Open File: $!\n");
    while ($line = )
    {
      if ($line =~ $regex)
      {
        print $line;
        print OUT_FILE ($line);
      }
    }
    close(IN_FILE);
    close(OUT_FILE);

    if ((substr($File::Find::name, -1)) eq "Z")
    {
      # If we uncompressed a compressed file then
      # we must now recompress it.
      $zipfile = substr($File::Find::name, 0, -2);
      print "Compressing $zipfile...";
     system("compress $zipfile");
    }
  }
}

Just paste the code below into a file called ‘youtube.php’ in your wp-content/plugins directory. You should then be able to activate it via the Plugins admin option. Once activated, you can place a YouTube video in your post by going to code-view and inserting ["youtube" video_id] (minus the quotes). The video_id parameter is the ‘v’ parameter in a YouTube URL. In the example below, the URL is http://www.youtube.com/watch?v=lL4L4Uv5rf0. Therefore, the video_id parameter should be lL4L4Uv5rf0. In the code below, you will need to remove the quotes around the word “youtube” in the regex on line 5, I had to put these in to display the code without it interpreting the tag… it’s a work in progress!

define("YOUTUBE_WIDTH", 425);
define("YOUTUBE_HEIGHT", 350);
define("YOUTUBE_TAG", "/["youtube" ([[:print:]]+)]/");
define("YOUTUBE_LINK", "");

function youtube_plugin_cb($match)
{
$html = YOUTUBE_LINK;
$html = str_replace("###YOUTUBE_ID###", $match[1], $html);
return ($html);
}

function youtube_plugin($content)
{
return (preg_replace_callback(YOUTUBE_TAG, 'youtube_plugin_cb', $content));
}

add_filter('the_content', 'youtube_plugin');
add_filter('comment_text', 'youtube_plugin');

?>

In common with a lot of languages, the current object is represented by the ‘this’ keyword. I wanted to pass ‘this’ to a static method of another class. Of course, I can’t refer to the object as ‘this’ in the static method context as that would be ambiguous insofar as it could refer to the class with the static method I’m working with. This pattern is often used with callbacks where for example you might want to register a class with a particular listener objcet. To avoid confusion, I named the actual parameter in the static method

that

I assumed that I would reference the fields and methods of the object using

that.someMethod()

rather than

this.someMethod()

This is where the fun begins. Let’s call the original object

SomeObject theObject

and I want to call the static method

SomeClass.doStaticMethod(SomeObject that)

I would call that method, from within theObject, using

SomeClass.doStaticMethod(this)

When in theObject, I have access to private fields and methods since private fields and methods are within scope. I assumed the same would be true when I passed “theObject” as “this” to “SomeClass.doStaticMethod(SomeObject that)”. However, when I actually try to access private fields such as “that.privateField”, it would appear that I no longer have access. I could create appropriate accessor methods, but that would defeat the idea of encapsulation.

Does anyone have any ideas? Am I missing some fundamental (and so obvious I missed it) rule of scope or object passing?

I initially tried following the My First Project tutorial, but hit problems pretty quickly. It would seem that there was a problem with the PHP SQLite extension. The phpinfo() function verified that SQLite was indeed installed, but I couldn’t get any further on that trail. After reading a number of forum posts on the issue, it became apparent I should recompile Apache and PHP. I’m still not that confident with Linux to do that so I left it at that.

Then I followed the Askeet tutorial with more success as this tutorial uses MySQL rather than SQLite. However, I can’t get the URL rewriting to work as it should. I’ve checked my Apache configuration, the .htacces file and still no luck. If I load http://<project>/question I get a 404 error. If I load http://<project>/index.php/question or http://<project>/frontend_dev.php/question all is well. I’ll press on with this tutorial until I hit a road block, but this is really bugging me. Again, a few forum posts suggest recompiling Apache and PHP. However, the extensions that should be included in the new build are already present according to phpinfo().

I’m currently running Fedora 7 which installs Apache and PHP in its own odd way. Perhaps I should start from scratch by removing Apache and PHP with yum and compiling both from source. Although as I said I’m kind of reluctant to do that. If anyone has any ideas – let me know!