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Commit d9d918b2 added a gen_server whose purpose is to keep track of
visible nodes on which diameter_dist:attach/1 has been called to
register a node as a handler of incoming Diameter requests when
diameter_dist:route_session/2 is configured as spawn_opt MFA. The server
contacts visible nodes at init in order to request information, but
instead of monitoring visible to also be able to request information at
nodeup, it monitored on all nodes, resulting in gen_server casts even to
hidden nodes.
Monitor only on visible nodes since a hidden node may not be able to
deal with the new message.
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into maint
* peterdmv/inets/httpd_erl_script_timeout/ERIERL-321/OTP-15669:
inets: Fix handling of erl_script_timeout
Change-Id: I6a90408de48df6b8b01f44e0b273507bcec27b13
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When httpd was started with 'erl_script_timeout', the value of the
option was converted to milliseconds before storage. Subsequent
calls to httpd:info/1 returned the input value multiplied by 1000.
This change fixes the handing of erl_script_timeout by storing the
timeout in seconds and converting it to milliseconds before usage.
Change-Id: Ic308d83b59ad0884e053f096f995754c89adcbf4
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* sverker/maint/ets-no-mbuf-trapping/OTP-15660:
erts: Remove ets traversal yielding if heap fragment
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* anders/diameter/21.3/OTP-15654:
Update appup for diameter 2.2 in OTP 21.3
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* anders/diameter/distribution/OTP-15398:
Add diameter_dist_SUITE to exercise diameter_dist:route_session/2
Add consistent hashing to diameter_dist:route_session/2
Add options to diameter_dist:route_session/2 node selection
Add diameter_dist for ready spawn_opt callbacks
Tweak/document request handler callback
Document acknowledgements in transport interface
Fix comment typo
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into maint
* ingela/ssl/ftp/continue/chunk-timing/ERIERL-316/OTP-15666:
ssl: Correct active once emulation
ftp: New test case
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* siri/logger/file-logging-improvements:
[logger] Add option file_check to logger_std_h
[logger] Add log file rotation by options to logger_std_h
[logger] Add better control of file modes in logger_std_h
[logger] Refactor logger_std_h
[logger] Make sure log file is re-opened with configured file options
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OTP-15663
This option indicates how often the handler shall check if the log
file still exists and if the inode is changed.
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OTP-15479
OTP-15662
New configuration map for logger_std_h:
#{type => file,
file => file:filename(),
modes => [file:mode()],
max_no_bytes => pos_integer() | infinity,
max_no_files => non_neg_integer(),
compress_on_rotate => boolean()}
For backwards compatibility, the old variant for specifying the file
name via the 'type' parameter is still supported, i.e. {file,FileName}
and {file,FileName,Modes}, but it is no longer documented.
Rotation scheme:
The current log file always has the same name, and the archived files
get extensions ".0", ".1", ... The newest archive has extension ".0",
and the oldest archive has the highest number.
If 'compress_on_rotate' is set to true, the archived files are gzipped
and get the additional extension ".gz", e.g. error.log.0.gz.
Rotation is turned off by setting 'max_no_bytes' to infinity. Setting
'max_no_files' to 0 does not turn off rotation, but only specifies
that no archives are to be saved.
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Conflicts:
lib/ftp/test/ftp_SUITE.erl
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into sverker/maint/ets-no-mbuf-trapping/OTP-15660
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Many heap fragments do no longer make the GC slow.
Even worse, we are not guaranteed that a yield will provoke a GC
removing the fragments, which might lead to a one-yield-per-bucket
scenario if the heap fragment(s) still remains after each yield.
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* rickard/make-fixes-21/OTP-15657:
Remove own configured RM make variable
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* siri/logger/optimize-formatter/OTP-15647:
[logger] Improve formatter performance
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* siri/logger/bench:
[logger] Add benchmark of big log events with chars_limit and max_size
[logger] Add max memory usage to statistics in logger_olp
Skip logger benchmarks in normal kernel test
[logger] Add benchmark of events per millisecond for handlers
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* ingela/ftp/chunk-timing/ERIERL-316/OTP-15659:
ftp: Correct test case
ftp: Fix timing bug
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Test case can not make assumptions on how many chunks will delivered
from the underlaying TCP stream.
Some code commented out that should be used in some form to create
a new test case. There might be other issues than the one fixed in
the previous commit.
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* rickard/make-fixes-20/OTP-15657:
Remove own configured RM make variable
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* rickard/make-fixes-19/OTP-15657:
Remove own configured RM make variable
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* rickard/make-fixes-18/OTP-15657:
Remove own configured RM make variable
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* rickard/make-fixes-17/OTP-15657:
Remove own configured RM make variable
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Instead rely on gnu make's pre-defined RM variable which should
equal 'rm -f'
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Spread a server over three nodes, one of which terminates a peer
connection, the other two to handle requests. Terminate transport on one
of the server nodes and ensure that answers come only from the other
two.
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If the Session-Id optional value to node() mapping fails then hash
Session-Id to a node by default, instead of selecting the local node as
in the parent commit. The previous behaviour is configurable by setting
default = local in an options map.
Nodes make themselves part of the pool from which nodes are selected by
calling diameter_dist:attach/1 with the list of service names they are
willing to handle requests for, the local node being selected in the
absence of any attached nodes. The original idea was to base the node
pool on share_peers and/or use_shared_peers configuration, but that
configuration determines where outgoing requests can be sent, while
route_session/2 deals with incoming requests, so it's not obvious that
conflating the two is a good thing. (Also because
share_peers/use_shared_peers can be used in different ways; the former
could have been skipped entirely.)
The hashing effectively places nodes on a circle, a hashed Session-Id
being mapped to the nearest predecessor node (clockwise). Nodes are
rehashed with each Session-Id (with the id as salt) for a more even
distribution, at the cost of performance, although how high the cost or
how even the distribution has yet to be tested. Obviously, the larger
the number of attached nodes, the higher the cost. Adding/removing an
attached node only affects session ids that hash in the interval between
the added/removed node and its successor (hence consistent hashing).
Options are tweaked slightly compared to the parent commit, and it is
now possible to restrict the optional value mapping to specific Diameter
identities, to avoid mapping an id that was generated at the peer when
the peer is also implemented with the diameter application.
Note that diameter_dist is not yet an officially documented interface,
so could change. Documentation is in the module itself.
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To be able to restrict how many AVPs will be examined (from the front of
a message) when looking for Session-Id, and to decide what to do with if
the AVP isn't found. Options are specified as a map of the following
form.
#{search => non_neg_integer(),
default => discard | mfa(),
dispatch => list() | mfa()}
The search member says how many AVPs to examine at most, from the front
of the message. If the optional value of a Session-Id is not the name of
a connected node then the default member determines what to do with the
request, handle it locally (the default), discard it, or invoke an MFA
on the Session-Id | false (if none was found) and diameter_packet record
to return a node() | false; if the latter then the request is discarded.
If a node is identified then the dispatch MFA is invoked on the node and
the request MFA (as three arguments), a list Opts being equivalent to
the MFA {erlang, spawn_opt, [Opts]}, and the default being the empty
list.
Integer- or list-valued options are equivalent to the corresponding map
with a single value.
Limiting the search is to avoid searching messages containing many AVPs
for a Session-Id that is known to occur near the header, since section
8.8 of RFC 6733 says this:
When present, the Session-Id SHOULD appear immediately
following the Diameter header (see Section 3).
There's no guarantee, but in practice it may well be known that peers
are respecting the RFC, and in that case limiting the search is a
defense against searching messages from a malicious peer unnecessarily.
The search is unlimited by default.
A default is only used when a search fails to locate a Session-Id, and
can be to discard the message, or have a node() or false be returned
from an MFA applied to the diameter_packet in question. The local node
is chosen by default.
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That is, of functions that can be configured as spawn_opt MFAs in
transport configuration.
This commits adds the spawn_local described in the parent commit, and a
route_session that assumes that the local node initiates all sessions
with Session-Id returned by diameter:session_id/1, and handles incoming
requests on the node on which the id in question was returned,
diameter:session_id/1 using node() as optional value in the Session-Id
format.
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The possibility of configuring an MFA as spawn_opt was added in commit
fd285079, the callback being passed an arity-0 fun to be applied in an
appropriate handler process. Replace the fun by a tuple to be passed to
diameter_traffic:request/1, to avoid passing funs between nodes when
handler processes are remote.
A list-valued spawn_opt is now equivalent to the following configured as
{spawn_opt, {Mod, spawn_local, [Opts]}}.
spawn_local(ReqT, Opts) ->
spawn_opt(diameter_traffic, request, [ReqT], Opts).
ReqT is passed by diameter and contains information that the callback
may want to decide where to handle the request in question (which wasn't
accessible with a fun), but this information isn't exposed in a
documented way. The intention is instead to add an own callback
implementation to make use of the information.
Note that application lookup now takes place in the watchdog process in
both the list-valued (or no configuration) and mfa-valued cases. Whether
this is good, bad, or (probably) inconsequential remains to be seen.
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This is the {diameter, ack} message from a transport process to its
parent that requests that every Diameter request passed to the parent be
matched by a incoming send message, the atom false replacing a message()
in the case that the request is unanswered, allowing the transport to
keep track of the number of outstanding requests.
These were added in commit ca09cf7b, and are used to implement the
message_cb config in diameter_tcp/sctp, documented in commit cefcaa5c.
This commit documents the interface, to make it available to other
transport implementations.
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* maint-21:
Updated OTP version
Prepare release
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into maint
* lukas/erts/fix_inet_buffer_auto_adjust/OTP-15651/OTP-15652:
kernel runtime dependency to erts
erts: Add yield via timeout to inet read_packet
erts: Don't increase buffer when sctp sndbuf is set
erts: Only change inet buffer if not set
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* hasse/stdlib/optimize_pretty_printing/OTP-15639:
stdlib: Correct and optimize pretty printing of strings
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OTP-15602
It is allowed to set file modes for the handler to use when opening
its log file. The given modes were earlier accepted without any
checks, which could make the handler behave unexpectedly. This commit
makes sure that
* if none of write, append or exclusive is given, then append is added
* if raw is not given, it is added
* if delayed_write or {delayed_write,_,_} is not given, then
delayed_write is added
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into maint-21
* lukas/erts/fix_inet_buffer_auto_adjust/OTP-15651/OTP-15652:
kernel runtime dependency to erts
erts: Add yield via timeout to inet read_packet
erts: Don't increase buffer when sctp sndbuf is set
erts: Only change inet buffer if not set
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* rickard/make-fixes-21/OTP-15551:
Fix install phase in build system
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Change code to not send a message to itself as this allows other
messages to come in between. A change in TLS code made this scenario
more likely to happen, and the symptom is that the ftp:chunk_recv/1
function hangs.
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Avoid traversing all of the list/string when only part of it will be
used. An explicit check that the list is flat is needed since
string:slice() accepts deep lists and more.
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