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| 1 | +package RemoteCluster; |
| 2 | + |
| 3 | +use strict; |
| 4 | +use warnings; |
| 5 | +use Data::Dumper; |
| 6 | +use Net::OpenSSH; |
| 7 | +use Cwd; |
| 8 | + |
| 9 | +sub new |
| 10 | +{ |
| 11 | + my ($class, $config_fname) = @_; |
| 12 | + open(my $config, '<', $config_fname); |
| 13 | + my @config_lines = <$config>; |
| 14 | + my @nodes = (); |
| 15 | + |
| 16 | + # Parse connection options from ssh_config |
| 17 | + my $node; |
| 18 | + foreach (@config_lines) |
| 19 | + { |
| 20 | + if (/^Host (.+)/) |
| 21 | + { |
| 22 | + if ($node->{'host'}){ |
| 23 | + push(@nodes, $node); |
| 24 | + $node = {}; |
| 25 | + } |
| 26 | + $node->{'host'} = $1; |
| 27 | + } |
| 28 | + elsif (/\s*([^\s]+)\s*([^\s]+)\s*/) |
| 29 | + { |
| 30 | + $node->{'cfg'}->{$1} = $2; |
| 31 | + } |
| 32 | + } |
| 33 | + push(@nodes, $node); |
| 34 | + |
| 35 | + # print Dumper(@nodes); |
| 36 | + |
| 37 | + my $self = { |
| 38 | + nnodes => scalar @nodes, |
| 39 | + nodes => \@nodes, |
| 40 | + }; |
| 41 | + |
| 42 | + bless $self, $class; |
| 43 | + return $self; |
| 44 | +} |
| 45 | + |
| 46 | +sub run |
| 47 | +{ |
| 48 | + my ($self, $node_id, $cmd) = @_; |
| 49 | + my $node = $self->{nodes}[$node_id]; |
| 50 | + my $opts = $node->{cfg}; |
| 51 | + |
| 52 | + print "===\n"; |
| 53 | + print Dumper($opts); |
| 54 | + print "===\n"; |
| 55 | + |
| 56 | + my $ssh = Net::OpenSSH->new( |
| 57 | + $opts->{HostName}, |
| 58 | + port => $opts->{Port}, |
| 59 | + user => $opts->{User}, |
| 60 | + key_path => $opts->{IdentityFile} =~ /"([^"]*)"/, |
| 61 | + master_opts => [-o => "StrictHostKeyChecking=no"] |
| 62 | + ); |
| 63 | + |
| 64 | + my @ls = $ssh->capture($cmd); |
| 65 | + |
| 66 | + print Dumper(@ls); |
| 67 | + |
| 68 | +} |
| 69 | + |
| 70 | +sub init |
| 71 | +{ |
| 72 | + my ($self) = @_; |
| 73 | + my $nodes = $self->{nodes}; |
| 74 | + |
| 75 | + foreach my $node (@$nodes) |
| 76 | + { |
| 77 | + $node->init(hba_permit_replication => 0); |
| 78 | + } |
| 79 | +} |
| 80 | + |
| 81 | +sub detach |
| 82 | +{ |
| 83 | + my ($self) = @_; |
| 84 | + my $nodes = $self->{nodes}; |
| 85 | + |
| 86 | + foreach my $node (@$nodes) |
| 87 | + { |
| 88 | + delete $node->{_pid}; |
| 89 | + } |
| 90 | +} |
| 91 | + |
| 92 | +sub configure |
| 93 | +{ |
| 94 | + my ($self) = @_; |
| 95 | + my $nodes = $self->{nodes}; |
| 96 | + |
| 97 | + my $connstr = join(',', map { "${ \$_->connstr('postgres') }" } @$nodes); |
| 98 | + my $raftpeers = join(',', map { join(':', $_->{id}, $_->host, $_->{raftport}) } @$nodes); |
| 99 | + |
| 100 | + foreach my $node (@$nodes) |
| 101 | + { |
| 102 | + my $id = $node->{id}; |
| 103 | + my $host = $node->host; |
| 104 | + my $pgport = $node->port; |
| 105 | + my $raftport = $node->{raftport}; |
| 106 | + |
| 107 | + $node->append_conf("postgresql.conf", qq( |
| 108 | + listen_addresses = '$host' |
| 109 | + unix_socket_directories = '' |
| 110 | + port = $pgport |
| 111 | + max_prepared_transactions = 200 |
| 112 | + max_connections = 200 |
| 113 | + max_worker_processes = 100 |
| 114 | + wal_level = logical |
| 115 | + fsync = off |
| 116 | + max_wal_senders = 10 |
| 117 | + wal_sender_timeout = 0 |
| 118 | + max_replication_slots = 10 |
| 119 | + shared_preload_libraries = 'raftable,multimaster' |
| 120 | + multimaster.workers = 10 |
| 121 | + multimaster.queue_size = 10485760 # 10mb |
| 122 | + multimaster.node_id = $id |
| 123 | + multimaster.conn_strings = '$connstr' |
| 124 | + multimaster.use_raftable = true |
| 125 | + multimaster.ignore_tables_without_pk = true |
| 126 | + multimaster.twopc_min_timeout = 60000 |
| 127 | + raftable.id = $id |
| 128 | + raftable.peers = '$raftpeers' |
| 129 | + )); |
| 130 | + |
| 131 | + $node->append_conf("pg_hba.conf", qq( |
| 132 | + local replication all trust |
| 133 | + host replication all 127.0.0.1/32 trust |
| 134 | + host replication all ::1/128 trust |
| 135 | + )); |
| 136 | + } |
| 137 | +} |
| 138 | + |
| 139 | +sub start |
| 140 | +{ |
| 141 | + my ($self) = @_; |
| 142 | + my $nodes = $self->{nodes}; |
| 143 | + |
| 144 | + foreach my $node (@$nodes) |
| 145 | + { |
| 146 | + $node->start(); |
| 147 | + } |
| 148 | +} |
| 149 | + |
| 150 | +sub stop |
| 151 | +{ |
| 152 | + my ($self) = @_; |
| 153 | + my $nodes = $self->{nodes}; |
| 154 | + |
| 155 | + foreach my $node (@$nodes) |
| 156 | + { |
| 157 | + $node->stop(); |
| 158 | + } |
| 159 | +} |
| 160 | + |
| 161 | +sub psql |
| 162 | +{ |
| 163 | + my ($self, $index, @args) = @_; |
| 164 | + my $node = $self->{nodes}->[$index]; |
| 165 | + return $node->psql(@args); |
| 166 | +} |
| 167 | + |
| 168 | + |
| 169 | +my $cluster = new RemoteCluster('ssh-config'); |
| 170 | + |
| 171 | +print $cluster->{'nnodes'} . "\n"; |
| 172 | + |
| 173 | +$cluster->run(1, 'ls -la'); |
| 174 | + |
| 175 | +1; |
| 176 | + |
| 177 | + |
| 178 | + |
| 179 | + |
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