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270 lines
11 KiB
Perl
Executable File
270 lines
11 KiB
Perl
Executable File
#!/usr/bin/perl
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################################################################################
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# script initialization
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use strict; # protect us from ourselves
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use DBI; # database stuff
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use Date::Parse;
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use POSIX qw(strftime);
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use Socket; # DNS queries
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use File::Find; # grabbing the list of log files from the filesystem
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#use Fcntl ':flock'; # import LOCK_* constants for locking log files
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# XXX Should use File::Basename for splitting paths up into paths and filenames.
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# XXX This stuff should go into a config file.
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my $root_dir = "/data/ftp-logs";
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my $sites = "aol|gatech|indiana|isc|oregonstate|rediris|scarlet|utah"; # XXX Should be generated by a database query.
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my $verbose = 1;
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my $DO_REVERSE_DNS_LOOKUPS = 0;
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chdir $root_dir
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or die "Can't change to root dir $root_dir: $!";
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# Figure out what period of time to process the logs from. We use
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# a file's "modification time" attribute to store the most recent time
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# at which logs were processed, and we process logs between that time
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# and the present (i.e. from last processed time + 1 to the current time).
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#my $timestamp_file = "$root_dir/last-processed";
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#if (!-e $timestamp_file) {
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# # Create the timestamp file and give it a timestamp way in the past.
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# my $status = system("touch", "-t197001010000", $timestamp_file);
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# if ($status != 0) { die "Couldn't touch $timestamp_file: $!" }
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#}
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#my ($read_time, $last_processed_time) = (stat($timestamp_file))[8,9];
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#my $start_time = $last_processed_time + 1;
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#my $end_time = time;
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#utime($read_time, $end_time, $timestamp_file)
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# or die "Can't update timestamp on $timestamp_file: $!";
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#CREATE TABLE entries (id INT PRIMARY KEY, protocol VARCHAR(4), protocol_version VARCHAR(5), client VARCHAR(15), date_time DATETIME, method VARCHAR(4), file_id INT, status CHAR(3), bytes INT, site_id TINYINT, log_id INT);
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# Regular expressions that grab data from the log entries; pre-defined
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# and pre-compiled here for performance. The backslash in [^\"]
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# isn't necessary for Perl but fixes indenting confusion in emacs.
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my $common_log_regex = qr/^(\S+) \S+ \S+ \[([^:]+:\d+:\d+:\d+ [^\]]+)] "(\S+) (.*?) (\S+)\/(\S+)" (\S+) (\S+) "([^\"]*)" "([^\"]*)"/o;
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my $aol_log_regex = qr/(\w{3} \w{3} \d\d \d\d:\d\d:\d\d \d{4}) \d+ (\S+) (\d+) (.*?) (\S+) "([^\"]*)" "([^\"]*)"/o;
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################################################################################
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# database and query configuration
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# Establish a database connection.
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my $dsn = "DBI:mysql:host=mecha.mozilla.org;database=downloadstats;port=3306";
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my $dbh = DBI->connect($dsn,
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"logprocessord",
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"1ssw?w?",
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{ RaiseError => 1,
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PrintError => 0,
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ShowErrorStatement => 1 }
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);
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# Prepare the statements we're going to use to insert HTTP log entries into
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# the database.
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my $insert_entry_sth = $dbh->prepare("INSERT INTO entries (id, protocol, protocol_version,
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client, date_time, method, file_id, status, bytes, site_id, log_id)
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VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)");
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my $insert_file_sth = $dbh->prepare("INSERT INTO files (id, path, name) VALUES (?, ?, ?)");
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my $get_file_id_sth = $dbh->prepare("SELECT id FROM files WHERE path = ? AND name = ?");
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my $get_log_status_sth = $dbh->prepare("SELECT id, status FROM logs WHERE path = ? AND name = ?");
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my $insert_log_sth = $dbh->prepare("INSERT INTO logs (id, path, name, site_id, status) VALUES (?, ?, ?, ?, ?)");
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my $update_log_sth = $dbh->prepare("UPDATE logs SET status = ? WHERE id = ?");
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my $get_site_id_sth = $dbh->prepare("SELECT id FROM sites WHERE abbr = ?");
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# Get the last unique ID from the database so we know what the next one
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# should be. XXX These assume only one script process will ever be running
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# at a time, which is an unsafe assumption; fix this by locking the tables
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# in question whenever a new entry is to be inserted and then running
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# these queries to get the maximum IDs. Note that locking could be expensive,
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# so perhaps it's better just to lock everything at the beginning and not let
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# a second process access the database at all.
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my ($entry_id) = $dbh->selectrow_array("SELECT MAX(id) FROM entries") || 0;
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my ($max_file_id) = $dbh->selectrow_array("SELECT MAX(id) FROM files") || 0;
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my $seen = 0;
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my $entered = 0;
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my ($client, $date_time, $method, $file, $protocol, $protocol_version,
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$status, $bytes, $referer, $user_agent, $host, $file_id, $path, $filename);
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my %hosts;
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my %files;
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################################################################################
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# main body
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find(\&process_log, $root_dir);
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################################################################################
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# functions
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sub process_log {
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# Processes a log file, inserting relevant entries into the database.
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# Called from File::Find::find with $_ containing the filename,
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# $File::Find::dir containing the path, and $File::Find::name
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# containing the path + name.
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my $log_seen = 0;
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my $log_entered = 0;
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$File::Find::name && $File::Find::dir && $_
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or die "process_log() called without name of file: $File::Find::name\n";
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my $logfile = $_;
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$File::Find::dir =~ m|^$root_dir/(.*)$|;
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my $relative_path = $1 || $File::Find::dir;
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# Don't process the file if it's a directory.
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if (-d $logfile) {
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print "Not processing $File::Find::name; directory\n";
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return;
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}
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# Don't process the file if it isn't a log file.
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# XXX This test may be too brittle, assuming a certain directory
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# and file structure. It does, however, deal with HTTP logs
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# which aren't in an http/ subdirectory of the site directory.
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if ($File::Find::name !~ m|^$root_dir/($sites)/(http/)?$logfile$|) {
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print "Not processing $File::Find::name; not an HTTP log file.\n";
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return;
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}
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# Grab the site's unique ID from the sites table.
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my $site = $1;
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my ($site_id) = $dbh->selectrow_array($get_site_id_sth, {}, $site);
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if (!$site_id) {
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print "Not processing $File::Find::name; couldn't find an entry " .
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"in the sites table for $site.\n";
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return;
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}
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# The name of the log file without any suffix indicating compression.
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# This script treats foo.log and foo.log.gz as the same file so we can
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# compress logs after processing them and they won't get reprocessed.
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# Note that the "name" column in the "logs" table stores the base name
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# of the log file, not the actual name.
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my $basename = $logfile;
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$basename =~ s/\.(gz|bz2)$//;
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# Get the log file's unique ID and status from the database.
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my ($log_id, $status) =
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$dbh->selectrow_array($get_log_status_sth, {}, $relative_path, $basename);
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if (!$log_id) {
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print "Creating entry in database for log $File::Find::name.\n";
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#$dbh->do("LOCK TABLES logs WRITE");
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($log_id) = $dbh->selectrow_array("SELECT MAX(id) FROM logs");
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$log_id = ($log_id || 0) + 1;
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$insert_log_sth->execute($log_id, $relative_path, $basename, $site_id, "new");
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#$dbh->do("UNLOCK TABLES");
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}
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elsif ($status eq "processed") {
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print "Not processing log $File::Find::name; already processed.\n";
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return;
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}
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elsif ($status eq "processing") {
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print "Not processing log $File::Find::name; already being processed.\n";
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return;
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}
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print "Processing $File::Find::name.\n";
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$update_log_sth->execute("processing", $log_id) || die $dbh->errstr;
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if ($logfile =~ /\.gz$/) {
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open(LOGFILE, "gunzip -c $File::Find::name |")
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or die "Couldn't open gzipped file $File::Find::name for reading: $!";
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}
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elsif ($logfile =~ /\.bz2$/) {
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open(LOGFILE, "bunzip2 -c $File::Find::name |")
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or die "Couldn't open bzip2ed file $File::Find::name for reading: $!";
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}
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else {
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open(LOGFILE, "< $File::Find::name")
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or die "Couldn't open file for reading: $!";
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}
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while (<LOGFILE>) {
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# Periodically print out a message about our progress
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# so users know if the script has frozen or is going slowly.
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++$seen;
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++$log_seen;
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print "Processed $log_entered/$log_seen entries for $relative_path/$logfile ($entered/$seen total).\n"
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if ($seen % 1000 == 0) && $verbose;
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if ($File::Find::name =~ /\.http_trans$/) {
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($date_time, $client, $bytes, $file, $status, $user_agent, $referer)
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= ($_ =~ $aol_log_regex);
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$method = $protocol = $protocol_version = undef;
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}
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else {
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($client, $date_time, $method, $file, $protocol, $protocol_version,
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$status, $bytes, $referer, $user_agent) = ($_ =~ $common_log_regex);
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}
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#print "$client, $date_time, $method, $file, $protocol, $protocol_version, $status, $bytes, $referer, $user_agent\n";
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# Count only successful requests (whether partial or full).
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next unless $status == 200 || $status == 206;
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# Split up the file string into a path and a name.
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$file =~ /^(.*)\/([^\/]*)$/;
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($path, $filename) = ($1, $2);
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# Only deal with releases, webtools, and language packs at this point.
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next if $path !~ /releases/ && $path !~ /webtools/ && $path !~ /mozilla\/l10n\/lang/;
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# Strip the URL query string, if any, from the filename.
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$filename = (split(/\?/, $filename))[0];
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# Don't bother storing directory accesses, since we don't do anything with them.
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next if !$filename;
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# Get the file's unique ID or create a record for it if none exists yet.
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$file_id = $files{$file};
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if (!$file_id) {
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($file_id) = $dbh->selectrow_array($get_file_id_sth, {}, $path, $filename);
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if ($file_id) { $files{$file} = $file_id }
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else {
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$file_id = ++$max_file_id;
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$insert_file_sth->execute($file_id, $path, $filename || undef);
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}
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}
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# Convert the timestamp into MySQL's format (including folding the timezone
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# into the time to convert it to local time, since MySQL DATETIME types
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# don't store timezone information).
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$date_time = strftime("%Y/%m/%d %H:%M:%S", localtime(str2time($date_time)));
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if ($DO_REVERSE_DNS_LOOKUPS) {
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# Do a reverse DNS lookup to get the domain name from the IP address.
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$host = $hosts{$client};
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if (!$host) {
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if ($client =~ /\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}/) {
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$host = gethostbyaddr(inet_aton($client), AF_INET) || $client;
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}
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else {
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$host = $client;
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}
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$hosts{$client} = $host;
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}
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}
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else {
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$host = $client;
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}
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#print "$client = $host\n";
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# Insert the log entry into the database. We increment
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# the ID so this entry has the next unique ID, and we make
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# the filename be NULL if it doesn't exist because that's
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# easier for queries to understand than a blank string.
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++$entry_id;
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++$entered;
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++$log_entered;
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$insert_entry_sth->execute($entry_id, $protocol, $protocol_version, $host,
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$date_time, $method, $file_id, $status, $bytes,
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$site_id, $log_id);
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}
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close(LOGFILE);
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$update_log_sth->execute("processed", $log_id) || die $dbh->errstr;
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}
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