From 3b8083f63e774b30963948778e01553d85cfea29 Mon Sep 17 00:00:00 2001
From: Laurent Bercot <ska-skaware@skarnet.org>
Date: Tue, 20 Mar 2018 15:18:27 +0000
Subject:  Add throttling support to s6-svstat

---
 doc/s6-svstat.html          | 4 +++-
 src/supervision/s6-svstat.c | 4 +++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/doc/s6-svstat.html b/doc/s6-svstat.html
index 0da40cd..a77f903 100644
--- a/doc/s6-svstat.html
+++ b/doc/s6-svstat.html
@@ -75,7 +75,9 @@ are as follows.
 <em>fields</em> is a list of comma-separated field names. The valid field
 names are the following:
   <ul>
-   <li> <tt>up</tt>: print <tt>true</tt> if the service is up and <tt>false</tt> if it is down. </li>
+   <li> <tt>up</tt>: print <tt>true</tt> if the service is up and <tt>false</tt> if it is down.
+If the service is being throttled (i.e. technically up, but sleeping for a certain
+amount of time before it is really launched), it prints <tt>throttled</tt> instead of <tt>true</tt>. </li>
    <li> <tt>wantedup</tt>: print <tt>true</tt> if <a href="s6-supervise.html">s6-supervise</a>
 is currently instructed to (re)start the service when it is down, and <tt>false</tt> if
 <a href="s6-supervise.html">s6-supervise</a> is currently instructed to leave the service alone. </li>
diff --git a/src/supervision/s6-svstat.c b/src/supervision/s6-svstat.c
index 03ea004..d46c60a 100644
--- a/src/supervision/s6-svstat.c
+++ b/src/supervision/s6-svstat.c
@@ -35,7 +35,7 @@ struct funcmap_s
 
 static void pr_up (buffer *b, s6_svstatus_t const *st)
 {
-  buffer_putsnoflush(b, st->pid && !st->flagfinishing ? "true" : "false") ;
+  buffer_putsnoflush(b, st->pid && !st->flagfinishing ? st->flagthrottled ? "throttled" : "true" : "false") ;
 }
 
 static void pr_wantedup (buffer *b, s6_svstatus_t const *st)
@@ -210,6 +210,8 @@ static void legacy (s6_svstatus_t *st, int flagnum)
   buffer_putnoflush(buffer_1small, fmt, uint64_fmt(fmt, status.stamp.sec.x)) ;
   buffer_putnoflush(buffer_1small, " seconds", 8) ;
 
+  if (isup && status.flagthrottled)
+    buffer_putnoflush(buffer_1small, ", throttled", 11) ;
   if (isup && !normallyup)
     buffer_putnoflush(buffer_1small, ", normally down", 15) ;
   if (!isup && normallyup)
-- 
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