src/PVE/HA/Env.pm

   1 package PVE::HA::Env;
   2
   3 use strict;
   4 use warnings;
   5
   6 use PVE::SafeSyslog;
   7 use PVE::Tools;
   8
   9 # abstract out the cluster environment for a single node
  10
  11 sub new {
  12     my ($this, $baseclass, $node, @args) = @_;
  13
  14     my $class = ref($this) || $this;
  15
  16     my $plug = $baseclass->new($node, @args);
  17
  18     my $self = bless { plug => $plug }, $class;
  19
  20     return $self;
  21 }
  22
  23 sub nodename {
  24     my ($self) = @_;
  25
  26     return $self->{plug}->nodename();
  27 }
  28
  29 sub hardware {
  30     my ($self) = @_;
  31
  32     return $self->{plug}->hardware();
  33 }
  34
  35 # manager status is stored on cluster, protected by ha_manager_lock
  36 sub read_manager_status {
  37     my ($self) = @_;
  38
  39     return $self->{plug}->read_manager_status();
  40 }
  41
  42 sub write_manager_status {
  43     my ($self, $status_obj) = @_;
  44
  45     return $self->{plug}->write_manager_status($status_obj);
  46 }
  47
  48 # lrm status is written by LRM, protected by ha_agent_lock,
  49 # but can be read by any node (CRM)
  50
  51 sub read_lrm_status {
  52     my ($self, $node) = @_;
  53
  54     return $self->{plug}->read_lrm_status($node);
  55 }
  56
  57 sub write_lrm_status {
  58     my ($self, $status_obj) = @_;
  59
  60     return $self->{plug}->write_lrm_status($status_obj);
  61 }
  62
  63 # check if we do node shutdown
  64 # we used this to decide if services should be stopped or freezed
  65 sub is_node_shutdown {
  66     my ($self) = @_;
  67
  68     return $self->{plug}->is_node_shutdown();
  69 }
  70
  71 # implement a way to send commands to the CRM master
  72 sub queue_crm_commands {
  73     my ($self, $cmd) = @_;
  74
  75     return $self->{plug}->queue_crm_commands($cmd);
  76 }
  77
  78 sub read_crm_commands {
  79     my ($self) = @_;
  80
  81     return $self->{plug}->read_crm_commands();
  82 }
  83
  84 sub read_service_config {
  85     my ($self) = @_;
  86
  87     return $self->{plug}->read_service_config();
  88 }
  89
  90 sub change_service_location {
  91     my ($self, $sid, $current_node, $new_node) = @_;
  92
  93     return $self->{plug}->change_service_location($sid, $current_node, $new_node);
  94 }
  95
  96 sub read_group_config {
  97     my ($self) = @_;
  98
  99     return $self->{plug}->read_group_config();
 100 }
 101
 102 # this should return a hash containing info
 103 # what nodes are members and online.
 104 sub get_node_info {
 105     my ($self) = @_;
 106
 107     return $self->{plug}->get_node_info();
 108 }
 109
 110 sub log {
 111     my ($self, $level, @args) = @_;
 112
 113     return $self->{plug}->log($level, @args);
 114 }
 115
 116 # acquire a cluster wide manager lock
 117 sub get_ha_manager_lock {
 118     my ($self) = @_;
 119
 120     return $self->{plug}->get_ha_manager_lock();
 121 }
 122
 123 # release the cluster wide manager lock.
 124 # when released another CRM may step up and get the lock, thus this should only
 125 # get called when shutting down/deactivating the current master
 126 sub release_ha_manager_lock {
 127     my ($self) = @_;
 128
 129     return $self->{plug}->release_ha_manager_lock();
 130 }
 131
 132 # acquire a cluster wide node agent lock
 133 sub get_ha_agent_lock {
 134     my ($self, $node) = @_;
 135
 136     return $self->{plug}->get_ha_agent_lock($node);
 137 }
 138
 139 # release the respective node agent lock.
 140 # this should only get called if the nodes LRM gracefully shuts down with
 141 # all services already cleanly stopped!
 142 sub release_ha_agent_lock {
 143     my ($self) = @_;
 144
 145     return $self->{plug}->release_ha_agent_lock();
 146 }
 147
 148 # return true when cluster is quorate
 149 sub quorate {
 150     my ($self) = @_;
 151
 152     return $self->{plug}->quorate();
 153 }
 154
 155 # return current time
 156 # overwrite that if you want to simulate
 157 sub get_time {
 158     my ($self) = @_;
 159
 160     return $self->{plug}->get_time();
 161 }
 162
 163 sub sleep {
 164    my ($self, $delay) = @_;
 165
 166    return $self->{plug}->sleep($delay);
 167 }
 168
 169 sub sleep_until {
 170    my ($self, $end_time) = @_;
 171
 172    return $self->{plug}->sleep_until($end_time);
 173 }
 174
 175 sub loop_start_hook {
 176     my ($self, @args) = @_;
 177
 178     return $self->{plug}->loop_start_hook(@args);
 179 }
 180
 181 sub loop_end_hook {
 182     my ($self, @args) = @_;
 183
 184     return $self->{plug}->loop_end_hook(@args);
 185 }
 186
 187 sub watchdog_open {
 188     my ($self) = @_;
 189
 190     # Note: when using /dev/watchdog, make sure perl does not close
 191     # the handle automatically at exit!!
 192
 193     return $self->{plug}->watchdog_open();
 194 }
 195
 196 sub watchdog_update {
 197     my ($self, $wfh) = @_;
 198
 199     return $self->{plug}->watchdog_update($wfh);
 200 }
 201
 202 sub watchdog_close {
 203     my ($self, $wfh) = @_;
 204
 205     return $self->{plug}->watchdog_close($wfh);
 206 }
 207
 208 sub after_fork {
 209     my ($self) = @_;
 210
 211     return $self->{plug}->after_fork();
 212 }
 213
 214 # maximal number of workers to fork,
 215 # return 0 as a hack to support regression tests
 216 sub get_max_workers {
 217     my ($self) = @_;
 218
 219     return $self->{plug}->get_max_workers();
 220 }
 221
 222 1;