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218 Commits

Author SHA1 Message Date
Ondřej Kuzník
e36d1e31c5 ITS#9001 manual changes 2021-03-30 15:46:40 +01:00
Howard Chu
829263c454 ITS#8847 move lutil_sockaddrstr() to ldap_pvt_sockaddrstr() 2021-03-26 13:45:26 +00:00
Howard Chu
bb6844e296 ITS#7295 don't init TLS threads by default 
Do it explicitly in servers
 2021-03-21 15:26:57 +00:00
Paul B. Henson
146889f205 ITS#9419 Add support for HAProxy proxy protocol v2 2021-02-24 18:11:09 +00:00
Paul B. Henson
dcca73370b Move slap_sockaddrstr into liblutil 2021-02-24 18:11:09 +00:00
Ondřej Kuzník
5fa0a651f5 revert: libevent 2.0 support 2021-02-24 18:11:09 +00:00
Quanah Gibson-Mount
5b2988ca54 ITS#9327 - Use STRIP_OPTS for lloadd 2021-02-17 19:55:25 +00:00
Quanah Gibson-Mount
ce2c5173bd ITS#9161 - Fix various typos 
Fix a number of different typos across the code base
 2021-02-17 18:42:46 +00:00
Ondřej Kuzník
e030e5eadd Do not redefine lload_change everywhere 2021-02-04 18:07:25 +00:00
Quanah Gibson-Mount
6c469f0793 ITS#7790 - Rename config.h 
Rename slapd/config.h to slap-config.h and update accordingly
Rename lloadd/config.h to lload-config.h and update accordingly
 2021-02-02 21:26:39 +00:00
Quanah Gibson-Mount
efaf9a4a17 Happy New Year! 2021-01-11 19:25:53 +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
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
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
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
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
Ondřej Kuzník
0314f95d7f Work around libevent base not waking up on shutdown 2020-11-17 17:58:15 +00:00