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ircd:Ⓜ️:fed: Simplify cached result copy and test.

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This commit is contained in:
Jason Volk 2020-04-29 02:36:12 -07:00
parent 86a601521d
commit cffe801148
1 changed files with 10 additions and 8 deletions
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18
matrix/fed.cc
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@ -1733,6 +1733,11 @@ try
ircd::now<system_point>() > expires ircd::now<system_point>() > expires
}; };
const bool valid
{
!empty(cached)
};
// Crucial value that will provide us with a return string for this // Crucial value that will provide us with a return string for this
// function in any case. This is obtained by either using the value // function in any case. This is obtained by either using the value
// found in cache or making a network query for a new value. expired=true // found in cache or making a network query for a new value. expired=true
@ -1741,7 +1746,7 @@ try
// as the origin string to return and we'll also cache that too. // as the origin string to return and we'll also cache that too.
const string_view delegated const string_view delegated
{ {
empty(cached) || expired? expired || !valid?
fetch_well_known(buf, origin): fetch_well_known(buf, origin):
// Move the returned string to the front of the buffer; this overwrites // Move the returned string to the front of the buffer; this overwrites
@ -1753,14 +1758,14 @@ try
}; };
// Branch on valid cache hit to return result. // Branch on valid cache hit to return result.
if(!empty(cached) && !expired) if(valid && !expired)
{ {
char tmbuf[48]; char tmbuf[48];
log::debug log::debug
{ {
well_known_log, "%s found in cache delegated to %s event_idx:%u expires %s", well_known_log, "%s found in cache delegated to %s event_idx:%u expires %s",
origin, origin,
delegated, cached,
event_idx, event_idx,
timef(tmbuf, expires, localtime), timef(tmbuf, expires, localtime),
}; };
@ -1769,7 +1774,7 @@ try
} }
// Branch on query failure to fallback on existing expired record // Branch on query failure to fallback on existing expired record
if(expired && !empty(cached) && delegated == origin) if(expired && valid && delegated == origin)
{ {
char tmbuf[48]; char tmbuf[48];
log::debug log::debug
@ -1781,10 +1786,7 @@ try
timef(tmbuf, expires, localtime), timef(tmbuf, expires, localtime),
}; };
return string_view return delegated;
{
data(buf), move(buf, cached)
};
} }
// Any time the well-known result is the same as the origin (that // Any time the well-known result is the same as the origin (that