vtest "Test VSM _.index rewrite when too many deletes"

vinyl v1 -vcl {
	backend default { .host = "${bad_ip}"; }
} -start

delay 1

process p1 {
	nlines=`wc -l < ${tmpdir}/v1/_.vsm_child/_.index`
	nminus=`grep -c '^-' ${tmpdir}/v1/_.vsm_child/_.index`
	echo CHILD NLINES $nlines NMINUS $nminus
} -dump -run

# Useful for debugging
#process p2 {tail -F ${tmpdir}/v1/_.vsm_child/_.index} -dump -start
#process p3 {tail -F ${tmpdir}/v1/_.vsm_mgt/_.index} -dump -start

vinyl v1 -vcl {
	backend b00 { .host = "${bad_ip}"; }
	backend b01 { .host = "${bad_ip}"; }
	backend b02 { .host = "${bad_ip}"; }
	backend b03 { .host = "${bad_ip}"; }

	sub vcl_recv {
		set req.backend_hint = b00;
		set req.backend_hint = b01;
		set req.backend_hint = b02;
		set req.backend_hint = b03;
	}
}

vinyl v1 -cliok vcl.list

process p1 -run

vinyl v1 -cliok "vcl.use vcl1"
vinyl v1 -cliok "vcl.discard vcl2"

delay 1

process p1 -run

# The child process starts out with approx 37 VSM segments
# and spent 10 lines on vcl2, so it takes ~ 15 backends to
# cause a _.index rewrite.
# Make it 20 to be on the safe side.
vinyl v1 -vcl {
	backend b00 { .host = "${bad_ip}"; }
	backend b01 { .host = "${bad_ip}"; }
	backend b02 { .host = "${bad_ip}"; }
	backend b03 { .host = "${bad_ip}"; }
	backend b04 { .host = "${bad_ip}"; }
	backend b05 { .host = "${bad_ip}"; }
	backend b06 { .host = "${bad_ip}"; }
	backend b07 { .host = "${bad_ip}"; }
	backend b08 { .host = "${bad_ip}"; }
	backend b09 { .host = "${bad_ip}"; }
	backend b10 { .host = "${bad_ip}"; }
	backend b11 { .host = "${bad_ip}"; }
	backend b12 { .host = "${bad_ip}"; }
	backend b13 { .host = "${bad_ip}"; }
	backend b14 { .host = "${bad_ip}"; }
	backend b15 { .host = "${bad_ip}"; }
	backend b16 { .host = "${bad_ip}"; }
	backend b17 { .host = "${bad_ip}"; }
	backend b18 { .host = "${bad_ip}"; }
	backend b19 { .host = "${bad_ip}"; }

	sub vcl_recv {
		set req.backend_hint = b00;
		set req.backend_hint = b01;
		set req.backend_hint = b02;
		set req.backend_hint = b03;
		set req.backend_hint = b04;
		set req.backend_hint = b05;
		set req.backend_hint = b06;
		set req.backend_hint = b07;
		set req.backend_hint = b08;
		set req.backend_hint = b09;
		set req.backend_hint = b10;
		set req.backend_hint = b11;
		set req.backend_hint = b12;
		set req.backend_hint = b13;
		set req.backend_hint = b14;
		set req.backend_hint = b15;
		set req.backend_hint = b16;
		set req.backend_hint = b17;
		set req.backend_hint = b18;
		set req.backend_hint = b19;
	}
}

vinyl v1 -cliok vcl.list
vinyl v1 -cliok backend.list

delay 1

process p1 -run

vinyl v1 -cliok "vcl.use vcl1"
vinyl v1 -cliok "vcl.discard vcl3"

delay 1

# Check that the _.index rewrite did happen

process p1 {
	nlines=`wc -l < ${tmpdir}/v1/_.vsm_child/_.index`
	nminus=`grep -c '^-' ${tmpdir}/v1/_.vsm_child/_.index`
	echo CHILD NLINES $nlines NMINUS $nminus
	# cat ${tmpdir}/v1/_.vsm_child/_.index
	test $nminus -lt 20
} -run

# Now check the management process VSM

process p1 {
	nlines=`wc -l < ${tmpdir}/v1/_.vsm_mgt/_.index`
	nminus=`grep -c '^-' ${tmpdir}/v1/_.vsm_mgt/_.index`
	echo MGT NLINES $nlines NMINUS $nminus
	# cat ${tmpdir}/v1/_.vsm_mgt/_.index
	test $nminus -eq 0
} -run

vinyl v1 -cliok "stop"

delay 1

process p1 {
	nlines=`wc -l < ${tmpdir}/v1/_.vsm_mgt/_.index`
	nminus=`grep -c '^-' ${tmpdir}/v1/_.vsm_mgt/_.index`
	echo MGT NLINES $nlines NMINUS $nminus
	# cat ${tmpdir}/v1/_.vsm_mgt/_.index
	test $nminus -eq 2
} -run

vinyl v1 -cliok "start"

delay 1

process p1 -run
