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|
/*
* we should format labels in a readable form like
* label="\
* {cnt_deliver:|\
* Filter obj.-\>resp.|\
* {vcl_deliver\{\}|\
* {req.*|resp.*}}|\
* {restart|<deliver>deliver|<synth>synth}}"
*
* <rant>
* ... but some servers in the v-c.o build farm use old graphviz 2.26.3
* which cannot handle labels with additional whitespace properly, so
* for the time being we need to fall back into dark middle ages and
* use illegibly long lines
* </rant>
* -- slink 20141013
*/
digraph cache_req_fsm {
margin="0.25"
ranksep="0.5"
center="1"
//// XXX does this belong here? -- from cache_vcl.c
/*
vcl_load [label = "vcl.load",shape=plaintext]
vcl_load -> init
init [
shape=record
label="
{VCL_Load:|
{vcl_init}|
{<ok>ok|<fail>fail}}"
]
init:ok -> ok
init:fail -> fail
vcl_discard [label = "vcl.discard",shape=plaintext]
vcl_discard -> fini
fini [
shape=record
label="
{VCL_Nuke:|
{vcl_fini}|
{<ok>ok}}"
]
fini:ok -> ok
*/
acceptor [shape=hexagon label="Request received"]
label_select [shape=hexagon label="LABEL"]
ESI_REQ [shape=hexagon label="ESI request"]
RESTART [shape=plaintext]
ESI_REQ -> recv
SYNTH [shape=plaintext]
FAIL [shape=plaintext]
acceptor -> recv [style=bold]
label_select -> recv [style=bold]
subgraph xcluster_deliver {
/* cnt_deliver() */
deliver [
shape=record
label="{cnt_deliver:|Filter obj.-\>resp.|{vcl_deliver\{\}|{req.*|resp.*}}|{fail|<restart>restart|<deliver>deliver|<synth>synth}}"
]
deliver:deliver:s -> V1D_Deliver [style=bold,color=green]
deliver:deliver:s -> V1D_Deliver [style=bold,color=red]
deliver:deliver:s -> V1D_Deliver [style=bold,color=blue]
stream [label="stream?\nbody",style=filled,color=turquoise]
stream -> V1D_Deliver [style=dotted]
}
V1D_Deliver -> DONE
/* cnt_synth() */
subgraph xcluster_synth {
synth [
shape=record
label="{cnt_synth:|{vcl_synth\{\}|{req.*|resp.*}}|{fail|<del>deliver|<restart>restart}}"
]
FAIL -> synth [color=purple]
SYNTH -> synth [color=purple]
synth:del:s -> V1D_Deliver [color=purple]
}
subgraph cluster_backend {
style=filled
color=aliceblue
"see backend graph" [shape=plaintext]
node [shape=box,
style=filled,
color=turquoise]
BGFETCH
FETCH
FETCH_DONE
FETCH_FAIL
}
lookup2:deliver:s -> BGFETCH [label="parallel\nif obj expired",
color=green]
FETCH_FAIL -> synth [color=purple]
FETCH_DONE -> deliver [style=bold,color=red]
FETCH_DONE -> deliver [style=bold,color=blue]
FETCH -> FETCH_DONE [style=dotted]
FETCH -> FETCH_FAIL [style=dotted]
/* cnt_lookup() */
subgraph xcluster_lookup {
lookup [
shape=record
color=grey
fontcolor=grey
label="{<top>cnt_lookup:|hash lookup|{<h>hit?|<miss>miss?|<hfm>hit-for-miss?|<hfp>hit-for-pass?|<busy>busy?}}"
]
lookup2 [
shape=record
label="{<top>cnt_lookup:|{vcl_hit\{\}|{req.*|obj.*}}|{fail|<deliver>deliver|<pass>pass|restart|synth}}"
]
}
lookup:busy:s -> lookup:top:ne [label=" waitinglist",
color=grey,
fontcolor=grey]
lookup:miss:s -> miss [style=bold,color=blue]
lookup:hfm:s -> miss [style=bold,color=blue,label=" req.\n is_hitmiss"]
lookup:hfp:s -> pass [style=bold,color=red,label=" req.\n is_hitpass"]
lookup:h:s -> lookup2 [style=bold,color=green]
lookup2:deliver:s -> deliver:n [style=bold,color=green]
lookup2:pass:s -> pass [style=bold,color=red]
/* cnt_miss */
subgraph xcluster_miss {
miss [
shape=record
label="{cnt_miss:|{vcl_miss\{\}|req.*}|{fail|<fetch>fetch|<synth>synth|<rst>restart|<pass>pass}}"
]
}
miss:fetch:s -> FETCH [style=bold,color=blue]
miss:pass:s -> pass [style=bold,color=red]
/* cnt_pass */
subgraph xcluster_pass {
pass [
shape=record
label="{cnt_pass:|{vcl_pass\{\}|req.*}|{fail|<fetch>fetch|<synth>synth|<rst>restart}}"
]
}
pass:fetch:s -> FETCH [style=bold, color=red]
/* cnt_pipe */
subgraph xcluster_pipe {
pipe [
shape=record
label="{cnt_pipe:|filter req.*-\>bereq.*|{vcl_pipe\{\}|{req.*|bereq.*}}|{fail|<pipe>pipe|<synth>synth}}"
]
pipe_do [
shape=ellipse
label="send bereq,\ncopy bytes until close"
]
pipe:pipe -> pipe_do [style=bold,color=orange]
}
pipe_do -> DONE [style=bold,color=orange]
/* cnt_restart */
subgraph xcluster_restart {
restart [
shape=record
color=grey
fontcolor=grey
label="{cnt_restart:|{fail|<ok>ok?|<max>max_restarts?}}"
]
}
RESTART -> restart [color=purple]
restart:ok:s -> recv
restart:max:s -> err_restart [color=purple]
err_restart [label="SYNTH",shape=plaintext]
/* cnt_recv() */
subgraph xcluster_recv {
recv [
shape=record
label="{cnt_recv:|{vcl_recv\{\}|req.*}|{fail|<hash>hash|<purge>purge|<pass>pass|<pipe>pipe|<restart>restart|<synth>synth|<vcl>vcl}}"
]
recv:hash -> hash [style=bold,color=green]
hash [
shape=record
label="{cnt_recv:|{vcl_hash\{\}|req.*}|{<lookup>lookup}}"
]
}
recv:pipe -> hash [style=bold,color=orange]
recv:pass -> hash [style=bold,color=red]
hash:lookup:w -> lookup [style=bold,color=green]
hash:lookup:s -> purge:top:n [style=bold,color=purple]
hash:lookup:s -> pass [style=bold,color=red]
hash:lookup:e -> pipe [style=bold,color=orange]
recv:purge:s -> hash [style=bold,color=purple]
recv:vcl:s -> vcl_label
vcl_label [label="switch to vcl\nLABEL",shape=plaintext]
/* cnt_purge */
subgraph xcluster_purge {
purge [
shape=record
label="{<top>cnt_purge:|{vcl_purge\{\}|req.*}|{fail|<synth>synth|<restart>restart}}"
]
}
}
|
