| 1 |
#!/bin/sh |
| 2 |
# pgserv.tcl |
| 3 |
# (c) 2000 Thomas Lockhart, PostgreSQL Inc. |
| 4 |
# The next line will reinvoke as wish *DO NOT REMOVE OR ALTER* \ |
| 5 |
exec wish "$0" "$@" |
| 6 |
|
| 7 |
puts "Starting Replication Server demo" |
| 8 |
|
| 9 |
set RSERV_BIN "/usr/lib/postgresql/bin" |
| 10 |
|
| 11 |
# Bring in the interfaces we will be using... |
| 12 |
|
| 13 |
#package require Pgtcl |
| 14 |
load libpgtcl[info sharedlibextension] |
| 15 |
|
| 16 |
# elog |
| 17 |
# Information or error log and exit handler |
| 18 |
proc {elog} {level message} { |
| 19 |
global show |
| 20 |
switch -exact -- $level { |
| 21 |
DEBUG { |
| 22 |
if {$show(debug)} { |
| 23 |
puts "DEBUG $message" |
| 24 |
} |
| 25 |
} |
| 26 |
ERROR { |
| 27 |
if {$show(error)} { |
| 28 |
puts "ERROR $message" |
| 29 |
} |
| 30 |
FATAL { |
| 31 |
if ($show(error)} { |
| 32 |
puts "FATAL $message" |
| 33 |
} |
| 34 |
exit 1 |
| 35 |
} |
| 36 |
default { |
| 37 |
puts "INFO $message" |
| 38 |
} |
| 39 |
} |
| 40 |
} |
| 41 |
|
| 42 |
proc {ShowUsage} {} { |
| 43 |
global argv0 |
| 44 |
puts "Usage: $argv0 --host name --user name --password string masterdb slavedb" |
| 45 |
puts "\t--masterhost name --masteruser name --masterpassword string" |
| 46 |
puts "\t--slavehost name --slaveuser name --slavepassword string" |
| 47 |
} |
| 48 |
|
| 49 |
# Initial values for database access |
| 50 |
# master, slave variables are tied to text input boxes, |
| 51 |
# and will be updated on user input |
| 52 |
proc {SetDbInfo} {db name {host ""} {user ""} {pass ""}} { |
| 53 |
global dbinfo |
| 54 |
set dbinfo($db,name) $name |
| 55 |
set dbinfo($db,host) $host |
| 56 |
set dbinfo($db,user) $user |
| 57 |
set dbinfo($db,pass) $pass |
| 58 |
} |
| 59 |
|
| 60 |
# ConnInfo |
| 61 |
# Connection information for pgtcl library |
| 62 |
proc {ConnInfo} {{db master}} { |
| 63 |
global dbinfo |
| 64 |
set ci "dbname=$dbinfo($db,name)" |
| 65 |
if {[string length $dbinfo($db,host)] > 0} { |
| 66 |
set ci "$ci host=$dbinfo($db,host)" |
| 67 |
} |
| 68 |
if {[string length $dbinfo($db,user)] > 0} { |
| 69 |
set ci "$ci user=$dbinfo($db,user)" |
| 70 |
} |
| 71 |
if {[string length $dbinfo($db,pass)] > 0} { |
| 72 |
set ci "$ci password=$dbinfo($db,pass)" |
| 73 |
} |
| 74 |
# puts "Construct conninfo $ci" |
| 75 |
return $ci |
| 76 |
} |
| 77 |
|
| 78 |
# ConnInfoParams |
| 79 |
# Connection information for (perl) callable programs |
| 80 |
proc {ConnInfoParams} {{db master}} { |
| 81 |
global dbinfo |
| 82 |
set ci "" |
| 83 |
if {[string length $dbinfo($db,host)] > 0} { |
| 84 |
set ci "$ci --host=$dbinfo($db,host)" |
| 85 |
} |
| 86 |
if {[string length $dbinfo($db,user)] > 0} { |
| 87 |
set ci "$ci --user=$dbinfo($db,user)" |
| 88 |
} |
| 89 |
if {[string length $dbinfo($db,pass)] > 0} { |
| 90 |
set ci "$ci --password=$dbinfo($db,pass)" |
| 91 |
} |
| 92 |
# puts "Construct conninfo $ci" |
| 93 |
return $ci |
| 94 |
} |
| 95 |
|
| 96 |
# ConnInfoMaster |
| 97 |
# Connection information for (perl) callable programs |
| 98 |
proc {ConnInfoMaster} {{db master}} { |
| 99 |
global dbinfo |
| 100 |
set ci $dbinfo($db,name) |
| 101 |
if {[string length $dbinfo($db,host)] > 0} { |
| 102 |
set ci "$ci --masterhost=$dbinfo($db,host)" |
| 103 |
} |
| 104 |
if {[string length $dbinfo($db,user)] > 0} { |
| 105 |
set ci "$ci --masteruser=$dbinfo($db,user)" |
| 106 |
} |
| 107 |
if {[string length $dbinfo($db,pass)] > 0} { |
| 108 |
set ci "$ci --masterpassword=$dbinfo($db,pass)" |
| 109 |
} |
| 110 |
# puts "Construct conninfo $ci" |
| 111 |
return $ci |
| 112 |
} |
| 113 |
|
| 114 |
# ConnInfoSlave |
| 115 |
# Connection information for (perl) callable programs |
| 116 |
proc {ConnInfoSlave} {{db slave}} { |
| 117 |
global dbinfo |
| 118 |
set ci $dbinfo($db,name) |
| 119 |
if {[string length $dbinfo($db,host)] > 0} { |
| 120 |
set ci "$ci --slavehost=$dbinfo($db,host)" |
| 121 |
} |
| 122 |
if {[string length $dbinfo($db,user)] > 0} { |
| 123 |
set ci "$ci --slaveuser=$dbinfo($db,user)" |
| 124 |
} |
| 125 |
if {[string length $dbinfo($db,pass)] > 0} { |
| 126 |
set ci "$ci --slavepassword=$dbinfo($db,pass)" |
| 127 |
} |
| 128 |
# puts "Construct conninfo $ci" |
| 129 |
return $ci |
| 130 |
} |
| 131 |
|
| 132 |
|
| 133 |
SetDbInfo master master localhost |
| 134 |
SetDbInfo slave slave localhost |
| 135 |
set dbinfo(snapshot,name) ".__Snapshot" |
| 136 |
|
| 137 |
set update "" |
| 138 |
|
| 139 |
set show(debug) 1 |
| 140 |
set show(error) 1 |
| 141 |
|
| 142 |
set argi 0 |
| 143 |
while {$argi < $argc} { |
| 144 |
# puts "argi is $argi; argc is $argc" |
| 145 |
set arg [lindex $argv $argi] |
| 146 |
switch -glob -- $arg { |
| 147 |
-h - |
| 148 |
--host { |
| 149 |
incr argi |
| 150 |
set dbinfo(master,host) [lindex $argv $argi] |
| 151 |
set dbinfo(slave,host) [lindex $argv $argi] |
| 152 |
} |
| 153 |
--masterhost { |
| 154 |
incr argi |
| 155 |
set dbinfo(master,host) [lindex $argv $argi] |
| 156 |
} |
| 157 |
--slavehost { |
| 158 |
incr argi |
| 159 |
set dbinfo(slave,host) [lindex $argv $argi] |
| 160 |
} |
| 161 |
-u - |
| 162 |
--user { |
| 163 |
incr argi |
| 164 |
set dbinfo(master,user) [lindex $argv $argi] |
| 165 |
set dbinfo(slave,user) [lindex $argv $argi] |
| 166 |
} |
| 167 |
--masteruser { |
| 168 |
incr argi |
| 169 |
set dbinfo(master,user) [lindex $argv $argi] |
| 170 |
} |
| 171 |
--slaveuser { |
| 172 |
incr argi |
| 173 |
set dbinfo(slave,user) [lindex $argv $argi] |
| 174 |
} |
| 175 |
-s - |
| 176 |
--snapshot { |
| 177 |
incr argi |
| 178 |
set dbinfo(snapshot,name) [lindex $argv $argi] |
| 179 |
} |
| 180 |
-* { |
| 181 |
elog ERROR "$argv0: invalid parameter '$arg'" |
| 182 |
ShowUsage |
| 183 |
exit 1 |
| 184 |
} |
| 185 |
default { |
| 186 |
break |
| 187 |
} |
| 188 |
} |
| 189 |
incr argi |
| 190 |
} |
| 191 |
|
| 192 |
if {$argi < $argc} { |
| 193 |
set dbinfo(master,name) [lindex $argv $argi] |
| 194 |
incr argi |
| 195 |
} |
| 196 |
if {$argi < $argc} { |
| 197 |
set dbinfo(slave,name) [lindex $argv $argi] |
| 198 |
incr argi |
| 199 |
} |
| 200 |
if {$argi < $argc} { |
| 201 |
elog "$argv0: too many parameters" |
| 202 |
ShowUsage |
| 203 |
exit 1 |
| 204 |
} |
| 205 |
|
| 206 |
elog DEBUG "User is $dbinfo(master,user) $dbinfo(slave,user)" |
| 207 |
elog DEBUG "Host is $dbinfo(master,host) $dbinfo(slave,host)" |
| 208 |
|
| 209 |
# |
| 210 |
# TK layout |
| 211 |
# |
| 212 |
|
| 213 |
wm title . "Async Replication" |
| 214 |
|
| 215 |
wm geom . 400x400 |
| 216 |
|
| 217 |
proc {CreateResultFrame} {b l w} { |
| 218 |
pack [frame $b -borderwidth 10] -fill x |
| 219 |
pack [button $b.run -text $l -command $l -width $w] -side left |
| 220 |
# pack [entry $b.e -textvariable NewRow] -side left |
| 221 |
} |
| 222 |
|
| 223 |
set t .top |
| 224 |
pack [frame $t -borderwidth 10] -fill x |
| 225 |
pack [frame $t.h -borderwidth 10] -fill x |
| 226 |
pack [label $t.h.h -text "PostgreSQL Async Replication Server"] |
| 227 |
|
| 228 |
set b .b |
| 229 |
pack [frame $b -borderwidth 10] -fill x |
| 230 |
pack [frame $b.l -borderwidth 10] -fill x |
| 231 |
pack [label $b.l.ml -text "Master"] -side left |
| 232 |
pack [label $b.l.sl -text "Slave"] -side right |
| 233 |
pack [entry $b.m -textvariable dbinfo(master,name) -width 25] -side left |
| 234 |
pack [entry $b.s -textvariable dbinfo(slave,name) -width 25] -side right |
| 235 |
|
| 236 |
set b .u |
| 237 |
pack [frame $b -borderwidth 10] -fill x |
| 238 |
pack [button $b.run -text update -command Update -width 10] -side left |
| 239 |
pack [entry $b.e -textvariable update -width 50] -side left |
| 240 |
|
| 241 |
set r [CreateResultFrame .r Replicate 10] |
| 242 |
|
| 243 |
set b .s |
| 244 |
pack [frame $b -borderwidth 10] -fill x |
| 245 |
pack [button $b.b -text Show -command Show -width 10] -side left |
| 246 |
pack [label $b.e -text ""] -side left |
| 247 |
|
| 248 |
set b .button |
| 249 |
pack [frame $b -borderwidth 10] -fill x |
| 250 |
|
| 251 |
pack [button $b.quit -text "Quit" -command Shutdown] |
| 252 |
|
| 253 |
# |
| 254 |
# Functions mapped to buttons |
| 255 |
# |
| 256 |
|
| 257 |
proc {Update} {} { |
| 258 |
global dbinfo |
| 259 |
global update |
| 260 |
|
| 261 |
elog DEBUG "Opening database [ConnInfo master]..." |
| 262 |
set res [catch {set db [pg_connect -conninfo "[ConnInfo master]"]} msg] |
| 263 |
if {$res} { |
| 264 |
elog ERROR "Database '$dbinfo(master,name)' is not available: $res ($msg)" |
| 265 |
} else { |
| 266 |
elog DEBUG "Insert $update into database $dbinfo(master,name)..." |
| 267 |
set res [pg_exec $db "insert into test select '$update', max(k)+1, max(l)+1 from test"] |
| 268 |
elog DEBUG [pg_result $res -status] |
| 269 |
catch {pg_disconnect $db} |
| 270 |
} |
| 271 |
} |
| 272 |
|
| 273 |
proc {Replicate} {} { |
| 274 |
global dbinfo |
| 275 |
global RSERV_BIN |
| 276 |
|
| 277 |
elog DEBUG "Replicating [ConnInfoCmd master]..." |
| 278 |
exec "$RSERV_BIN/Replicate" --snapshot=$dbinfo(snapshot,name) [ConnInfoParams] [ConnInfoMaster] [ConnInfoSlave] |
| 279 |
} |
| 280 |
|
| 281 |
proc {Show} {} { |
| 282 |
global dbinfo |
| 283 |
global update |
| 284 |
|
| 285 |
elog DEBUG "Opening database [ConnInfo slave]..." |
| 286 |
set res [catch {set db [pg_connect -conninfo "[ConnInfo slave]"]} msg] |
| 287 |
if {$res} { |
| 288 |
elog ERROR "DB $dbinfo(slave,name) not available: $res ($msg)" |
| 289 |
} else { |
| 290 |
elog DEBUG "Select $update from database $dbinfo(slave,name)..." |
| 291 |
set res [pg_exec $db "select i from test where i='$update'"] |
| 292 |
if {[pg_result $res -status] != "PGRES_TUPLES_OK"} { |
| 293 |
.s.e config -text "n/a" |
| 294 |
} else { |
| 295 |
set ntups [pg_result $res -numTuples] |
| 296 |
if {$ntups <= 0} { |
| 297 |
.s.e config -text "n/a" |
| 298 |
} else { |
| 299 |
for {set i 0} {$i < $ntups} {incr i} { |
| 300 |
set val [pg_result $res -getTuple $i] |
| 301 |
.s.e config -text $val |
| 302 |
} |
| 303 |
} |
| 304 |
pg_result $res -clear |
| 305 |
} |
| 306 |
catch {pg_disconnect $db} |
| 307 |
} |
| 308 |
} |
| 309 |
|
| 310 |
proc {Shutdown} {} { |
| 311 |
global dbinfo |
| 312 |
exit |
| 313 |
} |
Parent Directory
| 
Revision Log