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#!/usr/bin/perl
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use strict;
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use Test::More tests => 26;
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use FindBin qw($Bin);
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use lib "$Bin/lib";
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use MemcachedTest;
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my $server = new_memcached();
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my $sock = $server->sock;
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my $expire;
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print $sock "set foo 0 0 6\r\nfooval\r\n";
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is(scalar <$sock>, "STORED\r\n", "stored foo");
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mem_get_is($sock, "foo", "fooval");
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print $sock "flush_all\r\n";
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is(scalar <$sock>, "OK\r\n", "did flush_all");
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mem_get_is($sock, "foo", undef);
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# Test flush_all with zero delay.
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print $sock "set foo 0 0 6\r\nfooval\r\n";
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is(scalar <$sock>, "STORED\r\n", "stored foo");
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mem_get_is($sock, "foo", "fooval");
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print $sock "flush_all 0\r\n";
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is(scalar <$sock>, "OK\r\n", "did flush_all");
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mem_get_is($sock, "foo", undef);
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# check that flush_all doesn't blow away items that immediately get set
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print $sock "set foo 0 0 3\r\nnew\r\n";
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is(scalar <$sock>, "STORED\r\n", "stored foo = 'new'");
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mem_get_is($sock, "foo", 'new');
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# and the other form, specifying a flush_all time...
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my $expire = time() + 2;
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print $sock "flush_all $expire\r\n";
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is(scalar <$sock>, "OK\r\n", "did flush_all in future");
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print $sock "set foo 0 0 4\r\n1234\r\n";
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is(scalar <$sock>, "STORED\r\n", "stored foo = '1234'");
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mem_get_is($sock, "foo", '1234');
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sleep(5);
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mem_get_is($sock, "foo", undef);
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print $sock "set foo 0 0 5\r\n12345\r\n";
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is(scalar <$sock>, "STORED\r\n", "stored foo = '12345'");
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mem_get_is($sock, "foo", '12345');
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print $sock "flush_all 86400\r\n";
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is(scalar <$sock>, "OK\r\n", "did flush_all for far future");
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# Check foo still exists.
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mem_get_is($sock, "foo", '12345');
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print $sock "set foo2 0 0 5\r\n54321\r\n";
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is(scalar <$sock>, "STORED\r\n", "stored foo2 = '54321'");
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mem_get_is($sock, "foo", '12345');
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mem_get_is($sock, "foo2", '54321');
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# Test -F option which disables flush_all
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$server = new_memcached('-F');
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$sock = $server->sock;
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print $sock "set foo 0 0 7\r\nfooval2\r\n";
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is(scalar <$sock>, "STORED\r\n", "stored foo");
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mem_get_is($sock, "foo", "fooval2");
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print $sock "flush_all\r\n";
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is(scalar <$sock>, "CLIENT_ERROR flush_all not allowed\r\n", "flush_all was not allowed");
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mem_get_is($sock, "foo", "fooval2");
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# Test that disabling CAS makes flush_all less accurate.
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# Due to lock ordering issues we can no longer evict items newer than
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# oldest_live, so we rely on the CAS counter for an exact cliff. So disabling
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# CAS now means all items set in the same second will fail to set.
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$server = new_memcached('-C');
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$sock = $server->sock;
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my $failed_nocas = 0;
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# Running this 100,000 times failed the test a handful of times. 50 tries
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# should be enough.
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for (1..50) {
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print $sock "flush_all 0\r\n";
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my $foo = scalar <$sock>;
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print $sock "set foo 0 0 3\r\nnew\r\n";
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$foo = scalar <$sock>;
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print $sock "get foo\r\n";
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my $line = scalar <$sock>;
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if ($line =~ /^VALUE/) {
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$line = scalar <$sock>;
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$line = scalar <$sock>;
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print STDERR "Succeeded!!!\n";
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next;
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} elsif ($line =~ /^END/) {
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$failed_nocas++;
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last;
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}
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}
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is($failed_nocas, 1, "failed to set value after flush with no CAS at least once");
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