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 $self->{plug}->read_service_config();
  88 }
  89
  90 sub read_fence_config {
  91     my ($self) = @_;
  92
  93     return $self->{plug}->read_fence_config();
  94 }
  95
  96 sub fencing_mode {
  97     my ($self) = @_;
  98
  99     return $self->{plug}->fencing_mode();
 100 }
 101
 102 sub exec_fence_agent {
 103     my ($self, $agent, $node, @param) = @_;
 104
 105     return $self->{plug}->exec_fence_agent($agent, $node, @param);
 106 }
 107
 108 # this is normally only allowed by the master to recover a _fenced_ service
 109 sub steal_service {
 110     my ($self, $sid, $current_node, $new_node) = @_;
 111
 112     return $self->{plug}->steal_service($sid, $current_node, $new_node);
 113 }
 114
 115 sub read_group_config {
 116     my ($self) = @_;
 117
 118     return $self->{plug}->read_group_config();
 119 }
 120
 121 # this should return a hash containing info
 122 # what nodes are members and online.
 123 sub get_node_info {
 124     my ($self) = @_;
 125
 126     return $self->{plug}->get_node_info();
 127 }
 128
 129 sub log {
 130     my ($self, $level, @args) = @_;
 131
 132     return $self->{plug}->log($level, @args);
 133 }
 134
 135 # acquire a cluster wide manager lock
 136 sub get_ha_manager_lock {
 137     my ($self) = @_;
 138
 139     return $self->{plug}->get_ha_manager_lock();
 140 }
 141
 142 # release the cluster wide manager lock.
 143 # when released another CRM may step up and get the lock, thus this should only
 144 # get called when shutting down/deactivating the current master
 145 sub release_ha_manager_lock {
 146     my ($self) = @_;
 147
 148     return $self->{plug}->release_ha_manager_lock();
 149 }
 150
 151 # acquire a cluster wide node agent lock
 152 sub get_ha_agent_lock {
 153     my ($self, $node) = @_;
 154
 155     return $self->{plug}->get_ha_agent_lock($node);
 156 }
 157
 158 # release the respective node agent lock.
 159 # this should only get called if the nodes LRM gracefully shuts down with
 160 # all services already cleanly stopped!
 161 sub release_ha_agent_lock {
 162     my ($self) = @_;
 163
 164     return $self->{plug}->release_ha_agent_lock();
 165 }
 166
 167 # return true when cluster is quorate
 168 sub quorate {
 169     my ($self) = @_;
 170
 171     return $self->{plug}->quorate();
 172 }
 173
 174 # return current time
 175 # overwrite that if you want to simulate
 176 sub get_time {
 177     my ($self) = @_;
 178
 179     return $self->{plug}->get_time();
 180 }
 181
 182 sub sleep {
 183    my ($self, $delay) = @_;
 184
 185    return $self->{plug}->sleep($delay);
 186 }
 187
 188 sub sleep_until {
 189    my ($self, $end_time) = @_;
 190
 191    return $self->{plug}->sleep_until($end_time);
 192 }
 193
 194 sub loop_start_hook {
 195     my ($self, @args) = @_;
 196
 197     return $self->{plug}->loop_start_hook(@args);
 198 }
 199
 200 sub loop_end_hook {
 201     my ($self, @args) = @_;
 202
 203     return $self->{plug}->loop_end_hook(@args);
 204 }
 205
 206 sub watchdog_open {
 207     my ($self) = @_;
 208
 209     # Note: when using /dev/watchdog, make sure perl does not close
 210     # the handle automatically at exit!!
 211
 212     return $self->{plug}->watchdog_open();
 213 }
 214
 215 sub watchdog_update {
 216     my ($self, $wfh) = @_;
 217
 218     return $self->{plug}->watchdog_update($wfh);
 219 }
 220
 221 sub watchdog_close {
 222     my ($self, $wfh) = @_;
 223
 224     return $self->{plug}->watchdog_close($wfh);
 225 }
 226
 227 sub after_fork {
 228     my ($self) = @_;
 229
 230     return $self->{plug}->after_fork();
 231 }
 232
 233 # maximal number of workers to fork,
 234 # return 0 as a hack to support regression tests
 235 sub get_max_workers {
 236     my ($self) = @_;
 237
 238     return $self->{plug}->get_max_workers();
 239 }
 240
 241 1;