Returned imports/exports are formated like jwt exports imports, even if
they originating account is from config.
Fixes#1604
Signed-off-by: Matthias Hanel <mh@synadia.com>
Leafnodes that formed clusters were partially supported. This adds proper support for origin cluster, subscription suppression and data message no echo for the origin cluster.
Signed-off-by: Derek Collison <derek@nats.io>
Websocket support can be enabled with a new websocket
configuration block:
```
websocket {
# Specify a host and port to listen for websocket connections
# listen: "host:port"
# It can also be configured with individual parameters,
# namely host and port.
# host: "hostname"
# port: 4443
# This will optionally specify what host:port for websocket
# connections to be advertised in the cluster
# advertise: "host:port"
# TLS configuration is required
tls {
cert_file: "/path/to/cert.pem"
key_file: "/path/to/key.pem"
}
# If same_origin is true, then the Origin header of the
# client request must match the request's Host.
# same_origin: true
# This list specifies the only accepted values for
# the client's request Origin header. The scheme,
# host and port must match. By convention, the
# absence of port for an http:// scheme will be 80,
# and for https:// will be 443.
# allowed_origins [
# "http://www.example.com"
# "https://www.other-example.com"
# ]
# This enables support for compressed websocket frames
# in the server. For compression to be used, both server
# and client have to support it.
# compression: true
# This is the total time allowed for the server to
# read the client request and write the response back
# to the client. This include the time needed for the
# TLS handshake.
# handshake_timeout: "2s"
}
```
Signed-off-by: Ivan Kozlovic <ivan@synadia.com>
This contains a rewrite to the services layer for exporting and importing. The code this merges to already had a first significant rewrite that moved from special interest processing to plain subscriptions.
This code changes the prior version's dealing with reverse mapping which was based mostly on thresholds and manual pruning, with some sporadic timer usage. This version uses the jetstream branch's code that understands interest and failed deliveries. So this code is much more tuned to reacting to interest changes. It also removes thresholds and goes only by interest changes or expirations based around a new service export property, response thresholds. This allows a service provider to provide semantics on how long a response should take at a maximum.
This commit also introduces formal support for service export streamed and chunked response types send an empty message to signify EOF.
This commit also includes additions to the service latency tracking such that errors are now sent, not only successful interactions. We have added a Status field and an optional Error fields to ServiceLatency.
We support the following Status codes, these are directly from HTTP.
400 Bad Request (request did not have a reply subject)
408 Request Timeout (when system detects request interest went away, old request style to make dependable)..
503 Service Unavailable (no service responders running)
504 Service Timeout (The new response threshold expired)
Signed-off-by: Derek Collison <derek@nats.io>
Fixes#1314 by:
There was a data race with a write during reloadAuthorization.
Locking was added to all places where it was missing.
In situations were it appeared feasible, access was moved into existing
lock/unlock.
Where it was added, the lock order was already established.
Signed-off-by: Matthias Hanel <mh@synadia.com>
Running test suite on a Windows VM, I notice several failures.
Updated the compute of the RTT to be at least 1ns. I think that
this is just an issue with the VM I am running, but that change
will have no impact for normal situations (since setting the rtt
to the very minimum duration (1ns) instead of 0) and will prevent
some tests from failing.
Because of those same timer granularity issues, I had to add some
delays between some actions in order for time.Sub()/Since() to
actually report something more than 0.
Signed-off-by: Ivan Kozlovic <ivan@synadia.com>
As soon as server has processed a client CONNECT, it was possible
that if Connz() or other was requested, the server will send a
PING to compute the RTT. This would cause clients that expect
the first PONG as part of synchronous CONNECT logic to fail.
Make sure that we delay the first RTT ping to after sending the
first PONG, or if client does not send PING as part of the CONNECT,
after 2 seconds have elapsed since the tcp connection was accepted.
Resolves#1174
Signed-off-by: Ivan Kozlovic <ivan@synadia.com>
This adds a new config option server_name that
when set will be exposed in varz, events and more
as a descriptive name for the server.
If unset though the server_name will default to the pk
Signed-off-by: R.I.Pienaar <rip@devco.net>
1. Accounts will show up in connection info if auth=1.
2. You can filter by user (?auth=1&user=ivan) or account (?auth=1&acc=eng)
Signed-off-by: Derek Collison <derek@nats.io>
Added the RTT field to each route reported in routez.
Ensure that when a route is accepted, we send a PING to compute
the first RTT and don't have to wait for the ping timer to fire.
Signed-off-by: Ivan Kozlovic <ivan@synadia.com>
This was introduced in PR#930. The first commit had the route's
check if the flushOutbound() returned false, and if so would
locally unlock/lock the connection's lock. Unfortunately, this
was replaced in the second commit (a6aeed3a6b)
to the flushOutbound() function itself.
This causes the function closeConnection() to possibly unlock
the connection while calling flushOutbound(), which if the
connection is closed due to both a tls timeout for instance
and explicitly, it would result in the connection being scheduled
for a reconnect (if explicit gateway connection, possibly route).
Added defensive code in Gateway to register a unique outbound gateway.
Fixed a test that was now failing with newer Go version in which
they fixed url.Parse()
Signed-off-by: Ivan Kozlovic <ivan@synadia.com>
Such endpoint will list the gateway/cluster name, address and port
then list of outbound/inbound connections.
For each remote gateway there will be at most one outbound connection.
There can be 0 or more inbound connections for the same remote
gateway.
For each of these outbound/inbound connection, the connection info
similar to Connz is reported. Optionally, one can include the
interest mode/stats for each account.
Here are possible options:
* No specific options
http://host:port/gatewayz
* Limit to specific remote gateway, say name "B":
http://host:port/gatewayz/gw_name=B
* Include accounts (default limit to 1024 accounts)
http://host:port/gatewayz/accs=1
* Specific limit, say 200 (note accs=1 in this case is optional)
http://host:port/gatewayz/accs=1&accs_limit=200
* Specific account, say "acc_1". Note that accs=1 is not required then
http://host:port/gatewayz/acc_name=acc_1
* Above options can be mixed: specific remote gateway (B), with 100
accounts reported
http://host:port/gatewayz/gw_name=B&accs_limit=200
Signed-off-by: Ivan Kozlovic <ivan@synadia.com>
In varz's cluster{} section, there was no URLs field. This PR adds
it and displays the routes defined in the cluster{} config section.
The value gets updated should there be a config reload following
addition/removal of an url from "routes".
If config had 1 route to "nats://127.0.0.1:1234", here is what
it would look like now:
```
"cluster": {
"addr": "0.0.0.0",
"cluster_port": 6222,
"auth_timeout": 1,
"urls": [
"127.0.0.1:1234"
]
},
```
Adding route to "127.0.0.1:4567" and doing config reload:
```
"cluster": {
"addr": "0.0.0.0",
"cluster_port": 6222,
"auth_timeout": 1,
"urls": [
"127.0.0.1:1234",
"127.0.0.1:4567"
]
},
```
Note that due to how we handle discovered servers in the cluster,
new urls dynamically discovered will not show in above output.
This could be done, but would need some changes in how we store
things (actually in this case, new urls are not stored, just
attempted to be connected. Once they connect, they would be visible
in /routez).
For gateways, however, this PR displays the combination of the
URLs defined in config and the ones that are discovered after
a connection is made to a give cluster. So say cluster A has a single
url to one server in cluster B, when connecting to that server,
the server on A will get the list of the gateway URLs that one
can connect to, and these will be reflected in /varz. So this is
a different behavior that for routes. As explained above, we could
harmonize the behavior in a future PR.
Signed-off-by: Ivan Kozlovic <ivan@synadia.com>
----------------------------------------------------------------
Backward-incompatibility note:
Varz used to embed *Info and *Options which are other server objects.
However, Info is a struct that servers used to send protocols to other
servers or clients and its content must contain json tags since we
need to marshal those to be sent over. The problem is that it made
those fields now accessible to users calling Varz() and also visible
to the http /varz output. Some fields in Info were introduced in the
2.0 branch that clashed with json tag in Options, which made cluster{}
for instance disappear in the /varz output - because a Cluster string
in Info has the same json tag, and Cluster in Info is empty in some
cases.
For users that embed NATS and were using Server.Varz() directly,
without the use of the monitoring endpoint, they were then given
access (which was not the intent) to server internals (Info and Options).
Fields that were in Info or Options or directly in Varz that did not
clash with each other could be referenced directly, for instace, this
is you could access the server ID:
v, _ := s.Varz(nil)
fmt.Println(v.ID)
Another way would be:
fmt.Println(v.Info.ID)
Same goes for fields that were brought from embedding the Options:
fmt.Println(v.MaxConn)
or
fmt.Println(v.Options.MaxConn)
We have decided to explicitly define fields in Varz, which means
that if you previously accessed fields through v.Info or v.Options,
you will have to update your code to use the corresponding field
directly: v.ID or v.MaxConn for instance.
So fields were also duplicated between Info/Options and Varz itself
so depending on which one your application was accessing, you may
have to update your code.
---------------------------------------------------------------
Other issues that have been fixed is races that were introduced
by the fact that the creation of a Varz object (pointing to
some server data) was done under server lock, but marshaling not
being done under that lock caused races.
The fact that object returned to user through Server.Varz() also
had references to server internal objects had to be fixed by
returning deep copy of those internal objects.
Signed-off-by: Ivan Kozlovic <ivan@synadia.com>
Implemented single server account claim limits for subscriptions and active connections and message payload.
Signed-off-by: Derek Collison <derek@nats.io>
