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Author SHA1 Message Date
Tero Saarni
a3abd12729 ITS#9400 Added test case for back-ldap retry failure 2020-11-24 18:47:07 +00:00
Howard Chu
12523b0f29 ITS#9400 back-ldap: fix prev commit 2020-11-24 16:08:29 +00:00
Howard Chu
dbe69684a1 ITS#9404 fix serialNumberAndIssuerCheck 
Tighten validity checks
 2020-11-23 17:14:00 +00:00
Howard Chu
1ea12260d5 ITS#9400 back-ldap: fix retry binds 
Regression from fix for ITS#7403
 2020-11-23 05:14:30 +00:00
Quanah Gibson-Mount
1aef660f0b ITS#8747 - Regenreate for lloadd 2020-11-20 16:18:15 +00:00
Ondřej Kuzník
8557cc93b7 Add lloadd into our testing regime 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
323bb1d9a4 Handle upstream rejecting a StartTLS exop 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
0abf3f5bc9 Flush cache before calling dispose() 
This needs to be confirmed:
Location based atomics do not imply a full fence of the same level. So
to get the code in dispose() read the actual data, it seems we need to
initiate a fence.
 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
dfbed44b3e Do not accept requests with msgid == 0 
It is used internally to identify pinned operations and should not be
encountered over the wire.
 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
dfbf25d579 Honour keepalive settings for upstreams 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
25fff30e39 Let the last thread dispose of pending references 
If we're idle, there might be objects pending cleanup for the last two
epochs. Unless another thread comes in and checks into a new epoch or we
shut down, they will linger forever.

If one of the objects was a connection, it wouldn't get closed and be
stuck in CLOSE_WAIT state, potentially refusing another ligitimate
connection if its socket address were to match the one we're yet to
close.
 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
41a74b4689 Introduce the notion of experimental features 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
1f6d8611a3 Implement read throttling when writes backlog 
Reject operations in such a case with LDAP_BUSY. If read_event feature
is on, just stop reading from the connection. However this could still
result in deadlocks in reasonable situations. Need to figure out better
ways to make it safe and still protect ourselves.
 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
68b163fca9 Introduce mutex checks 
Switched off unless thread debugging is on, but still useful for static
analysis.
 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
62a806b243 Thread error checking 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
1328777a85 Fix a SASL channel-binding leak 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
58d66a3946 Fix race between unlinking a client and processing incoming data 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
959ff07911 Make sure read event is not enabled while upstream_bind is scheduled 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
b2e57148fa Shorten to one epoch per PDU 
A full read cycle can take a very long time if the limits are set too
high.
 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
b49f51879f Implement client pending operation limits 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
f832024e90 Straighten up client pending op tracking 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
dc1961cb15 Epoch based memory reclamation 
Similar to the algorithm presented in
https://www.cl.cam.ac.uk/techreports/UCAM-CL-TR-579.pdf

Not completely lock-free at the moment. Also the problems with epoch
based memory reclamation are still present - a thread actively observing
an epoch getting stuck will prevent LloadConnections and LloadOperations
being freed, potentially running out of memory.
 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
aab6af1c4e Switch to LDAP_OTHER when handling a lost upstream. 
LDAP_UNAVAILABLE signals "the server is shutting down or a subsystem
necessary to complete the operation is offline", so intelligent clients
tend to infer the connection will not be usable any more, which is not
the case here.
 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
81ead4a5f4 Fix races with backend_retry 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
c087244265 SASL and proxyauthz tests 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
bd3da7322a Add TLS tests 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
34ddaa5fc7 Tests for monitoring support 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
78f25a3c91 A failed cn=config ADD needs to be handled 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
4b3d21146b Introduce SASL support for upstream connections 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
50a021a387 Do not enforce a valid ld in lutil_sasl_interact 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
05e0906f8b Fix backend starttls= setting being ignored 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
9444dfc991 Simplify pause handling 
Gets rid of a race where unpause+pause fired in a quick succession would
miss the event_base_loopbreak() call.
 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
25a4d684fc Permit lloadd to share slapd TLS context 2020-11-17 17:58:15 +00:00
Nadezhda Ivanova
ef0028e586 Initial implementation of cn=config testing script 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
63efcd63eb Reuse connection walking in monitor for upstreams too 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
3bd2d7483e Reuse connection_walk for client matters 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
b4f43ed8e1 Refactor backend reset 
Reuse the connection walking facility in timeout management.
 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
638f8a2cbc Tighten checks on retry management 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
2a813cb06d Clean up backend_retry and its callers. 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
241f65b9e0 Fix a race in managing b_dns_req 2020-11-17 17:58:15 +00:00
Nadezhda Ivanova
f4a2fdd400 Fix a new backend not being operational if added via cn=config 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
00806dd32a libevent 2.0 support 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
513659c610 Document config behaviour 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
f1ea9da3a0 Reorganise listener support in cn=config and module startup 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
bd7a6f67de Introduce lload_open_new_listener 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
757c8beda7 Switch to ldap_parse_url_ext 
This simplifies port parsing in the end. Also pass the url to
ldap_open_listener in anticipation of incremental listener config.
 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
93d20459f1 Make io-threads modification startup-only 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
db3961f489 Record connect task to allow canceling it 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
6b10c2988e Record pending DNS resolution to be able to cancel 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
b039e7c1b0 Keep a reference around for the bind task 2020-11-17 17:58:15 +00:00