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* Fixed Database->_find_behind_databases(), making it a lot simpler in the process.

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Signed-off-by: Digimer <digimer@alteeve.ca>
main
Digimer 7 years ago
parent 3ce3a80c98
commit ce607238f8
4 changed files with 48 additions and 105 deletions
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  1. 1
      AN/Tools.pm
  2. 4
      AN/Tools.sql
  3. 142
      AN/Tools/Database.pm
  4. 2
      AN/an-tools.xml

1
AN/Tools.pm
Unescape View File

@ -606,6 +606,7 @@ sub _set_defaults
"variables",
"alert_sent",
"states",
"updated",
],
local_lock_active => 0,
locking_reap_age => 300,

4
AN/Tools.sql
Unescape View File

@ -253,7 +253,9 @@ CREATE TRIGGER trigger_variables
-- These are special tables with no history or tracking UUIDs that simply record transient information. --
-- ------------------------------------------------------------------------------------------------------- --
-- This table records the last time a scan ran.
-- This table records the last time a scan ran. It's sole purpose is to make sure at least one table's
-- 'modified_date' changes per run, so that database resyncs can be triggered reliably.
CREATE TABLE updated (
updated_host_uuid uuid not null,
updated_by text not null, -- The name of the agent (or "ScanCore' itself) that updated.

142
AN/Tools/Database.pm
Unescape View File

@ -2742,7 +2742,7 @@ sub _find_behind_databases
my $source = $parameter->{source} ? $parameter->{source} : "";
my $tables = $parameter->{tables} ? $parameter->{tables} : "";
$an->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => {
$an->Log->variables({source => $THIS_FILE, line => __LINE__, level => 3, list => {
source => $source,
tables => $tables,
}});
@ -2760,21 +2760,24 @@ sub _find_behind_databases
my $check_tables = [];
foreach my $table (@{$an->data->{sys}{database}{core_tables}})
{
$an->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { table => $table }});
$an->Log->variables({source => $THIS_FILE, line => __LINE__, level => 3, list => { table => $table }});
push @{$check_tables}, $table;
}
if (ref($tables) eq "ARRAY")
{
foreach my $table (@{$tables})
{
$an->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { table => $table }});
$an->Log->variables({source => $THIS_FILE, line => __LINE__, level => 3, list => { table => $table }});
push @{$check_tables}, $table;
# This will store the most recent time stamp.
$an->data->{sys}{database}{table}{$table}{last_updated} = 0;
}
}
# Look at all the databases and find the most recent time stamp (and the ID of the DB).
$an->data->{sys}{database}{source_db_id} = 0;
$an->data->{sys}{database}{source_updated_time} = 0;
my $source_updated_time = 0;
foreach my $id (sort {$a cmp $b} keys %{$an->data->{database}})
{
$an->Log->variables({source => $THIS_FILE, line => __LINE__, level => 3, list => {
@ -2785,74 +2788,34 @@ sub _find_behind_databases
"database::${id}::password" => $an->Log->secure ? $an->data->{database}{$id}{password} : "--",
}});
my $name = $an->data->{database}{$id}{name};
my $user = $an->data->{database}{$id}{user};
# Read the table's last modified_date
my $query = "
SELECT
round(extract(epoch from modified_date))
FROM
updated
WHERE
updated_host_uuid = ".$an->data->{sys}{use_db_fh}->quote($an->data->{sys}{host_uuid})."
AND
updated_by = ".$an->data->{sys}{use_db_fh}->quote($source).";";
$an->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => {
id => $id,
query => $query,
}});
my $last_updated = $an->Database->query({id => $id, query => $query, source => $THIS_FILE, line => __LINE__})->[0]->[0];
$last_updated = 0 if not defined $last_updated;
$an->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => {
last_updated => $last_updated,
"sys::database::source_updated_time" => $an->data->{sys}{database}{source_updated_time},
}});
if ($last_updated > $an->data->{sys}{database}{source_updated_time})
{
$an->data->{sys}{database}{source_updated_time} = $last_updated;
$an->data->{sys}{database}{source_db_id} = $id;
$an->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => {
"sys::database::source_db_id" => $an->data->{sys}{database}{source_db_id},
"sys::database::source_updated_time" => $an->data->{sys}{database}{source_updated_time},
}});
}
# Get the last updated time for this database (and source).
$an->data->{database}{$id}{last_updated} = $last_updated;
$an->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => {
"sys::database::source_updated_time" => $an->data->{sys}{database}{source_updated_time},
"sys::database::source_db_id" => $an->data->{sys}{database}{source_db_id},
"database::${id}::last_updated" => $an->data->{database}{$id}{last_updated}
}});
# Loop through the tables in this DB. For each table, we'll record the most recent time
# stamp. Later, We'll look through again and any table/DB with an older time stamp will be
# behind and a resync will be needed.
foreach my $table (@{$check_tables})
{
# Does this table exist yet?
my $query = "SELECT COUNT(*) FROM information_schema.tables WHERE table_type = 'BASE TABLE' AND table_schema = 'public' AND table_name = ".$an->data->{sys}{use_db_fh}->quote($table).";";
$an->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { query => $query }});
$an->Log->variables({source => $THIS_FILE, line => __LINE__, level => 3, list => { query => $query }});
my $count = $an->Database->query({id => $id, query => $query, source => $THIS_FILE, line => __LINE__})->[0]->[0];
$an->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { count => $count }});
$an->Log->variables({source => $THIS_FILE, line => __LINE__, level => 3, list => { count => $count }});
if ($count == 1)
{
# Does this table have a '*_host_uuid' column?
my $query = "SELECT column_name FROM information_schema.columns WHERE table_schema = 'public' AND column_name LIKE '\%_host_uuid' AND table_name = ".$an->data->{sys}{use_db_fh}->quote($table).";";
$an->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { query => $query }});
$an->Log->variables({source => $THIS_FILE, line => __LINE__, level => 3, list => { query => $query }});
my $host_column = $an->Database->query({id => $id, query => $query, source => $THIS_FILE, line => __LINE__})->[0]->[0];
$host_column = "" if not defined $host_column;
$an->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { host_column => $host_column }});
$an->Log->variables({source => $THIS_FILE, line => __LINE__, level => 3, list => { host_column => $host_column }});
# Does this table have a history schema version?
$query = "SELECT COUNT(*) FROM information_schema.tables WHERE table_type = 'BASE TABLE' AND table_schema = 'history' AND table_name = ".$an->data->{sys}{use_db_fh}->quote($table).";";
$an->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { query => $query }});
$an->Log->variables({source => $THIS_FILE, line => __LINE__, level => 3, list => { query => $query }});
my $count = $an->Database->query({id => $id, query => $query, source => $THIS_FILE, line => __LINE__})->[0]->[0];
$an->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { count => $count }});
$an->Log->variables({source => $THIS_FILE, line => __LINE__, level => 3, list => { count => $count }});
my $schema = $count ? "history" : "public";
@ -2871,7 +2834,7 @@ WHERE
ORDER BY
modified_date DESC
;";
$an->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => {
$an->Log->variables({source => $THIS_FILE, line => __LINE__, level => 3, list => {
id => $id,
query => $query,
}});
@ -2879,71 +2842,48 @@ ORDER BY
my $last_updated = $an->Database->query({id => $id, query => $query, source => $THIS_FILE, line => __LINE__})->[0]->[0];
$last_updated = 0 if not defined $last_updated;
$an->data->{database}{$id}{tables}{$table}{last_updated} = $last_updated;
# Record this table's last modified_date for later comparison.
$an->data->{sys}{database}{table}{$table}{id}{$id}{last_updated} = $last_updated;
$an->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => {
"database::${id}::tables::${table}::last_updated" => $an->data->{database}{$id}{tables}{$table}{last_updated},
}});
}
}
}
"sys::database::table::${table}::id::${id}::last_updated" => $an->data->{sys}{database}{table}{$table}{id}{$id}{last_updated},
"sys::database::table::${table}::last_updated" => $an->data->{sys}{database}{table}{$table}{last_updated},
# Find which DB is most up to date.
$an->data->{sys}{database}{to_update} = {};
foreach my $id (sort {$a cmp $b} keys %{$an->data->{database}})
{
$an->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => {
"sys::database::source_updated_time" => $an->data->{sys}{database}{source_updated_time},
"database::${id}::last_updated" => $an->data->{database}{$id}{last_updated},
}});
if ($an->data->{sys}{database}{source_updated_time} > $an->data->{database}{$id}{last_updated})
{
# This database is behind
$an->Log->entry({source => $THIS_FILE, line => __LINE__, level => 1, priority => "alert", key => "log_0104", variables => {
id => $id,
source => $source,
}});
# A database is behind, resync
$an->Database->_mark_database_as_behind({id => $id});
}
else
if ($an->data->{sys}{database}{table}{$table}{id}{$id}{last_updated} > $an->data->{sys}{database}{table}{$table}{last_updated})
{
# This database is up to date (so far).
$an->data->{sys}{database}{to_update}{$id}{behind} = 0;
$an->data->{sys}{database}{table}{$table}{last_updated} = $an->data->{sys}{database}{table}{$table}{id}{$id}{last_updated};
$an->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => {
"sys::database::to_update::${id}::behind" => $an->data->{sys}{database}{to_update}{$id}{behind},
"sys::database::table::${table}::last_updated" => $an->data->{sys}{database}{table}{$table}{last_updated},
}});
}
}
}
}
# If we don't yet need a resync, and if we were passed one or more tables, check those tables
# for differences
if ((not $an->data->{sys}{database}{resync_needed}) && (ref($tables) eq "HASH"))
{
foreach my $table (sort {$a cmp $b} keys %{$tables})
{
if (not defined $an->data->{sys}{database}{tables}{$table}{last_updated})
# Now loop through each table we've seen and see if the moditied_date differs for any of the
# databases. If it has, trigger a resync.
foreach my $table (sort {$a cmp $b} keys %{$an->data->{sys}{database}{table}})
{
# First we've seen, set the general updated time to this entry
$an->data->{sys}{database}{tables}{$table}{last_updated} = $an->data->{database}{$id}{tables}{$table}{last_updated};
$an->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => {
"sys::database::tables::${table}::last_updated" => $an->data->{sys}{database}{tables}{$table}{last_updated}
"sys::database::table::${table}::last_updated" => $an->data->{sys}{database}{table}{$table}{last_updated},
}});
}
if ($an->data->{sys}{database}{tables}{$table}{last_updated} > $an->data->{database}{$id}{tables}{$table}{last_updated})
foreach my $id (sort {$a cmp $b} keys %{$an->data->{sys}{database}{table}{$table}{id}})
{
# This database is behind
$an->Log->entry({source => $THIS_FILE, line => __LINE__, level => 1, priority => "alert", key => "log_0106", variables => {
id => $id,
source => $source,
table => $table,
$an->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => {
"sys::database::table::${table}::id::${id}::last_updated" => $an->data->{sys}{database}{table}{$table}{id}{$id}{last_updated},
}});
}
if ($an->data->{sys}{database}{table}{$table}{last_updated} > $an->data->{sys}{database}{table}{$table}{id}{$id}{last_updated})
{
# Resync needed.
$an->Log->entry({source => $THIS_FILE, line => __LINE__, level => 1, priority => "alert", key => "log_0106", variables => { id => $id }});
# Mark it as behind.
$an->Database->_mark_database_as_behind({id => $id});
last;
}
}
last if $an->data->{sys}{database}{resync_needed};
}
return(0);

2
AN/an-tools.xml
Unescape View File

@ -174,7 +174,7 @@ The database connection error was:
<key name="log_0103">The local machine's UUID was not read properly. It should be stored in: [#!data!sys::host_uuid!#] and contain hexadecimal characters in the format: '012345-6789-abcd-ef01-23456789abcd' and usually matches the output of 'dmidecode --string system-uuid'. If this file exists and if there is a string in the file, please verify that it is structured correctly.</key>
<key name="log_0104">The database with ID: [#!variable!id!#] for: [#!variable!file!#] is behind.</key>
<key name="log_0105">ScanCore database: [#!variable!database!#] already exists.</key>
<key name="log_0106">The database with ID: [#!variable!id!#] for: [#!variable!file!#] and table: [#!variable!table!#] is behind.</key>
<key name="log_0106">The database with ID: [#!variable!id!#] is behind. A database esync will be requested.</key>
<key name="log_0107">[ Warning ] - Failed to delete the temporary postgres password.</key>
<key name="log_0108"><![CDATA[[ Error ] - The method Database->insert_or_update_states() was called but the 'state_host_uuid' parameter was not passed or it is empty. Normally this is set to 'sys::data_uuid'.]]></key>
<key name="log_0109">[ Error ] - Failed to create the ScanCore database: [#!variable!database!#]</key>

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