From 0df283e41479e58d30a5b48fb1ccce9cd9f2d27c Mon Sep 17 00:00:00 2001 From: Florian Forster Date: Wed, 10 Oct 2007 16:13:28 +0200 Subject: [PATCH] tcpconns plugin: Changed the plugin to collect all TCP states, nut just `established'. Also the contrib/collection.cgi script has been updated. --- contrib/collection.cgi | 81 ++++++++++++++++++++++++++++++++- src/tcpconns.c | 119 ++++++++++++++++++++++++++++++++----------------- 2 files changed, 157 insertions(+), 43 deletions(-) diff --git a/contrib/collection.cgi b/contrib/collection.cgi index 79197602..045b77bb 100755 --- a/contrib/collection.cgi +++ b/contrib/collection.cgi @@ -2070,7 +2070,7 @@ sub load_graph_definitions 'GPRINT:max:MAX:%6.2lf%sByte Max,', 'GPRINT:avg:LAST:%6.2lf%sByte Last\l' ], - ols_swap => [ + old_swap => [ 'DEF:used_avg={file}:used:AVERAGE', 'DEF:used_min={file}:used:MIN', 'DEF:used_max={file}:used:MAX', @@ -2114,6 +2114,18 @@ sub load_graph_definitions 'GPRINT:used_max:MAX:%5.1lf%s Max,', 'GPRINT:used_avg:LAST:%5.1lf%s Last\l' ], + tcp_connections => ['-v', 'Connections', + 'DEF:avg={file}:value:AVERAGE', + 'DEF:min={file}:value:MIN', + 'DEF:max={file}:value:MAX', + "AREA:max#$HalfBlue", + "AREA:min#$Canvas", + "LINE1:avg#$FullBlue:Connections", + 'GPRINT:min:MIN:%4.1lf Min,', + 'GPRINT:avg:AVERAGE:%4.1lf Avg,', + 'GPRINT:max:MAX:%4.1lf Max,', + 'GPRINT:avg:LAST:%4.1lf Last\l' + ], temperature => ['-v', 'Celsius', 'DEF:temp_avg={file}:value:AVERAGE', 'DEF:temp_min={file}:value:MIN', @@ -2328,6 +2340,7 @@ sub load_graph_definitions $MetaGraphDefs->{'swap'} = \&meta_graph_swap; $MetaGraphDefs->{'mysql_commands'} = \&meta_graph_mysql_commands; $MetaGraphDefs->{'mysql_handler'} = \&meta_graph_mysql_commands; + $MetaGraphDefs->{'tcp_connections'} = \&meta_graph_tcp_connections; } # load_graph_definitions sub meta_graph_generic_stack @@ -2801,4 +2814,70 @@ sub meta_graph_swap return (meta_graph_generic_stack ($opts, $sources)); } # meta_graph_swap +sub meta_graph_tcp_connections +{ + confess ("Wrong number of arguments") if (@_ != 5); + + my $host = shift; + my $plugin = shift; + my $plugin_instance = shift; + my $type = shift; + my $type_instances = shift; + + my $opts = {}; + my $sources = []; + + $opts->{'title'} = "$host/$plugin" + . (defined ($plugin_instance) ? "-$plugin_instance" : '') . "/$type"; + $opts->{'number_format'} = '%6.2lf'; + + $opts->{'rrd_opts'} = ['-v', 'Connections']; + + my @files = (); + + $opts->{'colors'} = + { + ESTABLISHED => '00e000', + SYN_SENT => '00e0ff', + SYN_RECV => '00e0a0', + FIN_WAIT1 => 'f000f0', + FIN_WAIT2 => 'f000a0', + TIME_WAIT => 'ffb000', + CLOSE => '0000f0', + CLOSE_WAIT => '0000a0', + LAST_ACK => '000080', + LISTEN => 'ff0000', + CLOSING => '000000' + }; + + _custom_sort_arrayref ($type_instances, + [qw(ESTABLISHED SYN_SENT SYN_RECV FIN_WAIT1 FIN_WAIT2 TIME_WAIT CLOSE + CLOSE_WAIT LAST_ACK CLOSING LISTEN)]); + + for (@$type_instances) + { + my $inst = $_; + my $file = ''; + my $title = $opts->{'title'}; + + for (@DataDirs) + { + if (-e "$_/$title-$inst.rrd") + { + $file = "$_/$title-$inst.rrd"; + last; + } + } + confess ("No file found for $title") if ($file eq ''); + + push (@$sources, + { + name => $inst, + file => $file + } + ); + } # for (@$type_instances) + + return (meta_graph_generic_stack ($opts, $sources)); +} # meta_graph_tcp_connections # vim: shiftwidth=2:softtabstop=2:tabstop=8 diff --git a/src/tcpconns.c b/src/tcpconns.c index 7d6e7997..108a4e83 100644 --- a/src/tcpconns.c +++ b/src/tcpconns.c @@ -27,6 +27,9 @@ # error "No applicable input method." #endif +#define TCP_STATE_LISTEN 10 +#define TCP_STATE_MAX 11 + #define PORT_COLLECT_LOCAL 0x01 #define PORT_COLLECT_REMOTE 0x02 #define PORT_IS_LISTENING 0x04 @@ -35,8 +38,8 @@ typedef struct port_entry_s { uint16_t port; uint16_t flags; - uint32_t count_local; - uint32_t count_remote; + uint32_t count_local[TCP_STATE_MAX + 1]; + uint32_t count_remote[TCP_STATE_MAX + 1]; struct port_entry_s *next; } port_entry_t; @@ -48,6 +51,22 @@ static const char *config_keys[] = }; static int config_keys_num = STATIC_ARRAY_SIZE (config_keys); +static const char *tcp_state[] = +{ + "", /* 0 */ + "ESTABLISHED", + "SYN_SENT", + "SYN_RECV", + "FIN_WAIT1", + "FIN_WAIT2", + "TIME_WAIT", + "CLOSE", + "CLOSE_WAIT", + "LAST_ACK", + "LISTEN", /* 10 */ + "CLOSING" +}; + static int port_collect_listening = 0; static port_entry_t *port_list_head = NULL; @@ -55,27 +74,47 @@ static void conn_submit_port_entry (port_entry_t *pe) { value_t values[1]; value_list_t vl = VALUE_LIST_INIT; + int i; vl.values = values; vl.values_len = 1; vl.time = time (NULL); strcpy (vl.host, hostname_g); strcpy (vl.plugin, "tcpconns"); - snprintf (vl.type_instance, sizeof (vl.type_instance), "%hu", pe->port); - vl.type_instance[sizeof (vl.type_instance) - 1] = '\0'; if (((port_collect_listening != 0) && (pe->flags & PORT_IS_LISTENING)) || (pe->flags & PORT_COLLECT_LOCAL)) { - values[0].gauge = pe->count_local; - strcpy (vl.plugin_instance, "local"); - plugin_dispatch_values ("tcp_connections", &vl); + snprintf (vl.plugin_instance, sizeof (vl.plugin_instance), + "%hu-local", pe->port); + vl.plugin_instance[sizeof (vl.plugin_instance) - 1] = '\0'; + + for (i = 1; i <= TCP_STATE_MAX; i++) + { + vl.values[0].gauge = pe->count_local[i]; + + strncpy (vl.type_instance, tcp_state[i], sizeof (vl.type_instance)); + vl.type_instance[sizeof (vl.type_instance) - 1] = '\0'; + + plugin_dispatch_values ("tcp_connections", &vl); + } } + if (pe->flags & PORT_COLLECT_REMOTE) { - values[0].gauge = pe->count_remote; - strcpy (vl.plugin_instance, "remote"); - plugin_dispatch_values ("tcp_connections", &vl); + snprintf (vl.plugin_instance, sizeof (vl.plugin_instance), + "%hu-remote", pe->port); + vl.plugin_instance[sizeof (vl.plugin_instance) - 1] = '\0'; + + for (i = 1; i <= TCP_STATE_MAX; i++) + { + vl.values[0].gauge = pe->count_remote[i]; + + strncpy (vl.type_instance, tcp_state[i], sizeof (vl.type_instance)); + vl.type_instance[sizeof (vl.type_instance) - 1] = '\0'; + + plugin_dispatch_values ("tcp_connections", &vl); + } } } /* void conn_submit */ @@ -114,6 +153,8 @@ static port_entry_t *conn_get_port_entry (uint16_t port, int create) return (ret); } /* port_entry_t *conn_get_port_entry */ +/* Removes ports that were added automatically due to the `ListeningPorts' + * setting but which are no longer listening. */ static void conn_reset_port_entry (void) { port_entry_t *prev = NULL; @@ -123,7 +164,9 @@ static void conn_reset_port_entry (void) { /* If this entry was created while reading the files (ant not when handling * the configuration) remove it now. */ - if ((pe->flags & (PORT_COLLECT_LOCAL | PORT_COLLECT_REMOTE)) == 0) + if ((pe->flags & (PORT_COLLECT_LOCAL + | PORT_COLLECT_REMOTE + | PORT_IS_LISTENING)) == 0) { port_entry_t *next = pe->next; @@ -141,9 +184,8 @@ static void conn_reset_port_entry (void) continue; } - pe->count_local = 0; - pe->count_remote = 0; - + memset (pe->count_local, '\0', sizeof (pe->count_local)); + memset (pe->count_remote, '\0', sizeof (pe->count_remote)); pe->flags &= ~PORT_IS_LISTENING; pe = pe->next; @@ -152,41 +194,34 @@ static void conn_reset_port_entry (void) static int conn_handle_ports (uint16_t port_local, uint16_t port_remote, uint8_t state) { - /* Listening sockets */ - if ((state == 0x0a) && (port_collect_listening != 0)) - { - port_entry_t *pe; + port_entry_t *pe = NULL; - DEBUG ("tcpconns plugin: Adding listening port %hu", port_local); + if ((state == 0) || (state > TCP_STATE_MAX)) + { + NOTICE ("tcpconns plugin: Ignoring connection with unknown state 0x%02x.", + state); + return (-1); + } + /* Listening sockets */ + if ((state == TCP_STATE_LISTEN) && (port_collect_listening != 0)) + { pe = conn_get_port_entry (port_local, 1 /* create */); if (pe != NULL) - { - pe->count_local++; pe->flags |= PORT_IS_LISTENING; - } - } - /* Established connections */ - else if (state == 0x01) - { - port_entry_t *pe; - - DEBUG ("tcpconns plugin: Established connection %hu <-> %hu", - port_local, port_remote); - - pe = conn_get_port_entry (port_local, 0 /* no create */); - if ((pe != NULL) && (pe->flags & PORT_COLLECT_LOCAL)) - pe->count_local++; - - pe = conn_get_port_entry (port_remote, 0 /* no create */); - if ((pe != NULL) && (pe->flags & PORT_COLLECT_REMOTE)) - pe->count_remote++; - } - else - { - DEBUG ("tcpconns plugin: Ignoring unknown state 0x%x", state); } + DEBUG ("tcpconns plugin: Connection %hu <-> %hu (%s)", + port_local, port_remote, tcp_state[state]); + + pe = conn_get_port_entry (port_local, 0 /* no create */); + if (pe != NULL) + pe->count_local[state]++; + + pe = conn_get_port_entry (port_remote, 0 /* no create */); + if (pe != NULL) + pe->count_remote[state]++; + return (0); } /* int conn_handle_ports */ -- 2.11.0