redis_study/tests/integration/rdb.tcl

set server_path [tmpdir "server.rdb-encoding-test"]

# Copy RDB with different encodings in server path
exec cp tests/assets/encodings.rdb $server_path

start_server [list overrides [list "dir" $server_path "dbfilename" "encodings.rdb"]] {
  test "RDB encoding loading test" {
    r select 0
    csvdump r
  } {"0","compressible","string","aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"0","hash","hash","a","1","aa","10","aaa","100","b","2","bb","20","bbb","200","c","3","cc","30","ccc","300","ddd","400","eee","5000000000",
"0","hash_zipped","hash","a","1","b","2","c","3",
"0","list","list","1","2","3","a","b","c","100000","6000000000","1","2","3","a","b","c","100000","6000000000","1","2","3","a","b","c","100000","6000000000",
"0","list_zipped","list","1","2","3","a","b","c","100000","6000000000",
"0","number","string","10"
"0","set","set","1","100000","2","3","6000000000","a","b","c",
"0","set_zipped_1","set","1","2","3","4",
"0","set_zipped_2","set","100000","200000","300000","400000",
"0","set_zipped_3","set","1000000000","2000000000","3000000000","4000000000","5000000000","6000000000",
"0","string","string","Hello World"
"0","zset","zset","a","1","b","2","c","3","aa","10","bb","20","cc","30","aaa","100","bbb","200","ccc","300","aaaa","1000","cccc","123456789","bbbb","5000000000",
"0","zset_zipped","zset","a","1","b","2","c","3",
}
}

set server_path [tmpdir "server.rdb-startup-test"]

start_server [list overrides [list "dir" $server_path]] {
    test {Server started empty with non-existing RDB file} {
        r debug digest
    } {0000000000000000000000000000000000000000}
    # Save an RDB file, needed for the next test.
    r save
}

start_server [list overrides [list "dir" $server_path]] {
    test {Server started empty with empty RDB file} {
        r debug digest
    } {0000000000000000000000000000000000000000}
}

start_server [list overrides [list "dir" $server_path]] {
    test {Test RDB stream encoding} {
        for {set j 0} {$j < 1000} {incr j} {
            if {rand() < 0.9} {
                r xadd stream * foo $j
            } else {
                r xadd stream * bar $j
            }
        }
        r xgroup create stream mygroup 0
        r xreadgroup GROUP mygroup Alice COUNT 1 STREAMS stream >
        set digest [r debug digest]
        r debug reload
        set newdigest [r debug digest]
        assert {$digest eq $newdigest}
        r del stream
    }
}

# Helper function to start a server and kill it, just to check the error
# logged.
set defaults {}
proc start_server_and_kill_it {overrides code} {
    upvar defaults defaults srv srv server_path server_path
    set config [concat $defaults $overrides]
    set srv [start_server [list overrides $config]]
    uplevel 1 $code
    kill_server $srv
}

# Make the RDB file unreadable
file attributes [file join $server_path dump.rdb] -permissions 0222

# Detect root account (it is able to read the file even with 002 perm)
set isroot 0
catch {
    open [file join $server_path dump.rdb]
    set isroot 1
}

# Now make sure the server aborted with an error
if {!$isroot} {
    start_server_and_kill_it [list "dir" $server_path] {
        test {Server should not start if RDB file can't be open} {
            wait_for_condition 50 100 {
                [string match {*Fatal error loading*} \
                    [exec tail -1 < [dict get $srv stdout]]]
            } else {
                fail "Server started even if RDB was unreadable!"
            }
        }
    }
}

# Fix permissions of the RDB file.
file attributes [file join $server_path dump.rdb] -permissions 0666

# Corrupt its CRC64 checksum.
set filesize [file size [file join $server_path dump.rdb]]
set fd [open [file join $server_path dump.rdb] r+]
fconfigure $fd -translation binary
seek $fd -8 end
puts -nonewline $fd "foobar00"; # Corrupt the checksum
close $fd

# Now make sure the server aborted with an error
start_server_and_kill_it [list "dir" $server_path] {
    test {Server should not start if RDB is corrupted} {
        wait_for_condition 50 100 {
            [string match {*CRC error*} \
                [exec tail -10 < [dict get $srv stdout]]]
        } else {
            fail "Server started even if RDB was corrupted!"
        }
    }
}

start_server {} {
    test {Test FLUSHALL aborts bgsave} {
        r config set rdb-key-save-delay 1000
        r debug populate 1000
        r bgsave
        assert_equal [s rdb_bgsave_in_progress] 1
        r flushall
        after 200
        assert_equal [s rdb_bgsave_in_progress] 0
        # make sure the server is still writable
        r set x xx
    }
}

test {client freed during loading} {
    start_server [list overrides [list key-load-delay 10 rdbcompression no]] {
        # create a big rdb that will take long to load. it is important
        # for keys to be big since the server processes events only once in 2mb.
        # 100mb of rdb, 100k keys will load in more than 1 second
        r debug populate 100000 key 1000

        catch {
            r debug restart
        }

        set stdout [srv 0 stdout]
        while 1 {
            # check that the new server actually started and is ready for connections
            if {[exec grep -i "Server initialized" | wc -l < $stdout] > 1} {
                break
            }
            after 10
        }
        # make sure it's still loading
        assert_equal [s loading] 1

        # connect and disconnect 10 clients
        set clients {}
        for {set j 0} {$j < 10} {incr j} {
            lappend clients [redis_deferring_client]
        }
        foreach rd $clients {
            $rd debug log bla
        }
        foreach rd $clients {
            $rd read
        }
        foreach rd $clients {
            $rd close
        }

        # make sure the server freed the clients
        wait_for_condition 100 100 {
            [s connected_clients] < 3
        } else {
            fail "clients didn't disconnect"
        }

        # make sure it's still loading
        assert_equal [s loading] 1

        # no need to keep waiting for loading to complete
        exec kill [srv 0 pid]
    }
}