tests/support/server.tcl

   1 set ::global_overrides {}
   2 set ::tags {}
   3
   4 proc error_and_quit {config_file error} {
   5     puts "!!COULD NOT START REDIS-SERVER\n"
   6     puts "CONFIGURATION:"
   7     puts [exec cat $config_file]
   8     puts "\nERROR:"
   9     puts [string trim $error]
  10     exit 1
  11 }
  12
  13 proc check_valgrind_errors stderr {
  14     set fd [open $stderr]
  15     set buf [read $fd]
  16     close $fd
  17
  18     if {![regexp -- {ERROR SUMMARY: 0 errors} $buf] ||
  19         ![regexp -- {definitely lost: 0 bytes} $buf]} {
  20         puts "*** VALGRIND ERRORS ***"
  21         puts $buf
  22         puts "--- press enter to continue ---"
  23         gets stdin
  24     }
  25 }
  26
  27 proc kill_server config {
  28     # nothing to kill when running against external server
  29     if {$::external} return
  30
  31     # nevermind if its already dead
  32     if {![is_alive $config]} { return }
  33     set pid [dict get $config pid]
  34
  35     # check for leaks
  36     if {![dict exists $config "skipleaks"]} {
  37         catch {
  38             if {[string match {*Darwin*} [exec uname -a]]} {
  39                 tags {"leaks"} {
  40                     test "Check for memory leaks (pid $pid)" {
  41                         exec leaks $pid
  42                     } {*0 leaks*}
  43                 }
  44             }
  45         }
  46     }
  47
  48     # kill server and wait for the process to be totally exited
  49     while {[is_alive $config]} {
  50         if {[incr wait 10] % 1000 == 0} {
  51             puts "Waiting for process $pid to exit..."
  52         }
  53         catch {exec kill $pid}
  54         after 10
  55     }
  56
  57     # Check valgrind errors if needed
  58     if {$::valgrind} {
  59         check_valgrind_errors [dict get $config stderr]
  60     }
  61 }
  62
  63 proc is_alive config {
  64     set pid [dict get $config pid]
  65     if {[catch {exec ps -p $pid} err]} {
  66         return 0
  67     } else {
  68         return 1
  69     }
  70 }
  71
  72 proc ping_server {host port} {
  73     set retval 0
  74     if {[catch {
  75         set fd [socket $::host $::port]
  76         fconfigure $fd -translation binary
  77         puts $fd "PING\r\n"
  78         flush $fd
  79         set reply [gets $fd]
  80         if {[string range $reply 0 4] eq {+PONG} ||
  81             [string range $reply 0 3] eq {-ERR}} {
  82             set retval 1
  83         }
  84         close $fd
  85     } e]} {
  86         if {$::verbose} {
  87             puts -nonewline "."
  88         }
  89     } else {
  90         if {$::verbose} {
  91             puts -nonewline "ok"
  92         }
  93     }
  94     return $retval
  95 }
  96
  97 # doesn't really belong here, but highly coupled to code in start_server
  98 proc tags {tags code} {
  99     set ::tags [concat $::tags $tags]
 100     uplevel 1 $code
 101     set ::tags [lrange $::tags 0 end-[llength $tags]]
 102 }
 103
 104 proc start_server {options {code undefined}} {
 105     # If we are runnign against an external server, we just push the
 106     # host/port pair in the stack the first time
 107     if {$::external} {
 108         if {[llength $::servers] == 0} {
 109             set srv {}
 110             dict set srv "host" $::host
 111             dict set srv "port" $::port
 112             set client [redis $::host $::port]
 113             dict set srv "client" $client
 114             $client select 9
 115
 116             # append the server to the stack
 117             lappend ::servers $srv
 118         }
 119         uplevel 1 $code
 120         return
 121     }
 122
 123     # setup defaults
 124     set baseconfig "default.conf"
 125     set overrides {}
 126     set tags {}
 127
 128     # parse options
 129     foreach {option value} $options {
 130         switch $option {
 131             "config" {
 132                 set baseconfig $value }
 133             "overrides" {
 134                 set overrides $value }
 135             "tags" {
 136                 set tags $value
 137                 set ::tags [concat $::tags $value] }
 138             default {
 139                 error "Unknown option $option" }
 140         }
 141     }
 142
 143     set data [split [exec cat "tests/assets/$baseconfig"] "\n"]
 144     set config {}
 145     foreach line $data {
 146         if {[string length $line] > 0 && [string index $line 0] ne "#"} {
 147             set elements [split $line " "]
 148             set directive [lrange $elements 0 0]
 149             set arguments [lrange $elements 1 end]
 150             dict set config $directive $arguments
 151         }
 152     }
 153
 154     # use a different directory every time a server is started
 155     dict set config dir [tmpdir server]
 156
 157     # start every server on a different port
 158     dict set config port [incr ::port]
 159
 160     # apply overrides from global space and arguments
 161     foreach {directive arguments} [concat $::global_overrides $overrides] {
 162         dict set config $directive $arguments
 163     }
 164
 165     # write new configuration to temporary file
 166     set config_file [tmpfile redis.conf]
 167     set fp [open $config_file w+]
 168     foreach directive [dict keys $config] {
 169         puts -nonewline $fp "$directive "
 170         puts $fp [dict get $config $directive]
 171     }
 172     close $fp
 173
 174     set stdout [format "%s/%s" [dict get $config "dir"] "stdout"]
 175     set stderr [format "%s/%s" [dict get $config "dir"] "stderr"]
 176
 177     if {$::valgrind} {
 178         exec valgrind --suppressions=src/valgrind.sup src/redis-server $config_file > $stdout 2> $stderr &
 179     } else {
 180         exec src/redis-server $config_file > $stdout 2> $stderr &
 181     }
 182
 183     # check that the server actually started
 184     # ugly but tries to be as fast as possible...
 185     set retrynum 20
 186     set serverisup 0
 187
 188     if {$::verbose} {
 189         puts -nonewline "=== ($tags) Starting server ${::host}:${::port} "
 190     }
 191
 192     after 10
 193     if {$code ne "undefined"} {
 194         while {[incr retrynum -1]} {
 195             catch {
 196                 if {[ping_server $::host $::port]} {
 197                     set serverisup 1
 198                 }
 199             }
 200             if {$serverisup} break
 201             after 50
 202         }
 203     } else {
 204         set serverisup 1
 205     }
 206
 207     if {$::verbose} {
 208         puts ""
 209     }
 210
 211     if {!$serverisup} {
 212         error_and_quit $config_file [exec cat $stderr]
 213     }
 214
 215     # find out the pid
 216     while {![info exists pid]} {
 217         regexp {\[(\d+)\]} [exec cat $stdout] _ pid
 218         after 100
 219     }
 220
 221     # setup properties to be able to initialize a client object
 222     set host $::host
 223     set port $::port
 224     if {[dict exists $config bind]} { set host [dict get $config bind] }
 225     if {[dict exists $config port]} { set port [dict get $config port] }
 226
 227     # setup config dict
 228     dict set srv "config_file" $config_file
 229     dict set srv "config" $config
 230     dict set srv "pid" $pid
 231     dict set srv "host" $host
 232     dict set srv "port" $port
 233     dict set srv "stdout" $stdout
 234     dict set srv "stderr" $stderr
 235
 236     # if a block of code is supplied, we wait for the server to become
 237     # available, create a client object and kill the server afterwards
 238     if {$code ne "undefined"} {
 239         set line [exec head -n1 $stdout]
 240         if {[string match {*already in use*} $line]} {
 241             error_and_quit $config_file $line
 242         }
 243
 244         while 1 {
 245             # check that the server actually started and is ready for connections
 246             if {[exec cat $stdout | grep "ready to accept" | wc -l] > 0} {
 247                 break
 248             }
 249             after 10
 250         }
 251
 252         # append the server to the stack
 253         lappend ::servers $srv
 254
 255         # connect client (after server dict is put on the stack)
 256         reconnect
 257
 258         # execute provided block
 259         set num_tests $::num_tests
 260         if {[catch { uplevel 1 $code } error]} {
 261             set backtrace $::errorInfo
 262
 263             # Kill the server without checking for leaks
 264             dict set srv "skipleaks" 1
 265             kill_server $srv
 266
 267             # Print warnings from log
 268             puts [format "\nLogged warnings (pid %d):" [dict get $srv "pid"]]
 269             set warnings [warnings_from_file [dict get $srv "stdout"]]
 270             if {[string length $warnings] > 0} {
 271                 puts "$warnings"
 272             } else {
 273                 puts "(none)"
 274             }
 275             puts ""
 276
 277             error $error $backtrace
 278         }
 279
 280         # Don't do the leak check when no tests were run
 281         if {$num_tests == $::num_tests} {
 282             dict set srv "skipleaks" 1
 283         }
 284
 285         # pop the server object
 286         set ::servers [lrange $::servers 0 end-1]
 287
 288         set ::tags [lrange $::tags 0 end-[llength $tags]]
 289         kill_server $srv
 290     } else {
 291         set ::tags [lrange $::tags 0 end-[llength $tags]]
 292         set _ $srv
 293     }
 294 }