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 $self->{plug}->read_crm_commands();
  82 }
  83
  84 sub service_config_exists {
  85     my ($self) = @_;
  86
  87     return $self->{plug}->service_config_exists();
  88 }
  89
  90 sub read_service_config {
  91     my ($self) = @_;
  92
  93     return $self->{plug}->read_service_config();
  94 }
  95
  96 sub change_service_location {
  97     my ($self, $sid, $current_node, $new_node) = @_;
  98
  99     return $self->{plug}->change_service_location($sid, $current_node, $new_node);
 100 }
 101
 102 sub read_group_config {
 103     my ($self) = @_;
 104
 105     return $self->{plug}->read_group_config();
 106 }
 107
 108 # this should return a hash containing info
 109 # what nodes are members and online.
 110 sub get_node_info {
 111     my ($self) = @_;
 112
 113     return $self->{plug}->get_node_info();
 114 }
 115
 116 sub log {
 117     my ($self, $level, @args) = @_;
 118
 119     return $self->{plug}->log($level, @args);
 120 }
 121
 122 # acquire a cluster wide manager lock
 123 sub get_ha_manager_lock {
 124     my ($self) = @_;
 125
 126     return $self->{plug}->get_ha_manager_lock();
 127 }
 128
 129 # release the cluster wide manager lock.
 130 # when released another CRM may step up and get the lock, thus this should only
 131 # get called when shutting down/deactivating the current master
 132 sub release_ha_manager_lock {
 133     my ($self) = @_;
 134
 135     return $self->{plug}->release_ha_manager_lock();
 136 }
 137
 138 # acquire a cluster wide node agent lock
 139 sub get_ha_agent_lock {
 140     my ($self, $node) = @_;
 141
 142     return $self->{plug}->get_ha_agent_lock($node);
 143 }
 144
 145 # release the respective node agent lock.
 146 # this should only get called if the nodes LRM gracefully shuts down with
 147 # all services already cleanly stopped!
 148 sub release_ha_agent_lock {
 149     my ($self) = @_;
 150
 151     return $self->{plug}->release_ha_agent_lock();
 152 }
 153
 154 # return true when cluster is quorate
 155 sub quorate {
 156     my ($self) = @_;
 157
 158     return $self->{plug}->quorate();
 159 }
 160
 161 # return current time
 162 # overwrite that if you want to simulate
 163 sub get_time {
 164     my ($self) = @_;
 165
 166     return $self->{plug}->get_time();
 167 }
 168
 169 sub sleep {
 170    my ($self, $delay) = @_;
 171
 172    return $self->{plug}->sleep($delay);
 173 }
 174
 175 sub sleep_until {
 176    my ($self, $end_time) = @_;
 177
 178    return $self->{plug}->sleep_until($end_time);
 179 }
 180
 181 sub loop_start_hook {
 182     my ($self, @args) = @_;
 183
 184     return $self->{plug}->loop_start_hook(@args);
 185 }
 186
 187 sub loop_end_hook {
 188     my ($self, @args) = @_;
 189
 190     return $self->{plug}->loop_end_hook(@args);
 191 }
 192
 193 sub watchdog_open {
 194     my ($self) = @_;
 195
 196     # Note: when using /dev/watchdog, make sure perl does not close
 197     # the handle automatically at exit!!
 198
 199     return $self->{plug}->watchdog_open();
 200 }
 201
 202 sub watchdog_update {
 203     my ($self, $wfh) = @_;
 204
 205     return $self->{plug}->watchdog_update($wfh);
 206 }
 207
 208 sub watchdog_close {
 209     my ($self, $wfh) = @_;
 210
 211     return $self->{plug}->watchdog_close($wfh);
 212 }
 213
 214 # hack to support regression tests
 215 sub can_fork {
 216     my ($self) = @_;
 217
 218     return $self->{plug}->can_fork();
 219 }
 220
 221 1;