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3903 Commits

Author SHA1 Message Date
Sean Chittenden c9afc16d96 Return error from PingConsulServer 
In order to report why a Ping failed, change the signature of PingConsulServers to include an error message.
 2016-03-28 13:38:58 -07:00
Sean Chittenden 28dc6451d9 Change the definition of the ServerDetails struct key 
Use only the serf Name for now.  Leaving the plumbing for now.
 2016-03-28 12:53:19 -07:00
Sean Chittenden 62c38ecb39 Correct the comment to match reality 2016-03-28 12:32:30 -07:00
Sean Chittenden 8ac35d84f0 Rename serverCfg to sc for consistency 2016-03-28 12:06:26 -07:00
Sean Chittenden 664ab238fd Add a quick length check 
Verify that AddServer behaved as expected
 2016-03-28 11:38:12 -07:00
Sean Chittenden 4589c36308 Switch the order of ServerDetails.String() 
It's more natrual to have the network first.  I think I flipped the order accidentally.
 2016-03-28 11:37:25 -07:00
Hrishikesh Barua a938cf00e6 Added help text for -dev option #1804 for zsh completion. 2016-03-28 19:32:02 +05:30
Hrishikesh Barua 958a4e43b7 Added help text for -dev option #1804 for zsh completion. 2016-03-28 19:07:55 +05:30
Sean Chittenden e8a2e56370 Move rebalance log statement from INFO to DEBUG 2016-03-27 01:32:04 -07:00
Sean Chittenden 060dd49a95 Chase the API bump re: refreshServerRebalanceTimer 
If it works in prod, why shouldn't it work in the tests?
 2016-03-27 00:04:52 -07:00
Sean Chittenden 3d00208351 Move initialization of the rebalanceTimer to New() 2016-03-27 00:03:48 -07:00
Sean Chittenden 5652c60971 Add a test for ConnPool.PingConsulServer 
Spin up 5x servers, join and ping each server
 2016-03-26 23:52:06 -07:00
Sean Chittenden efc1113406 Expose ServerManager.ResetRebalanceTimer 
Move the rebalance timer from ServerManager.Start's stack to struct ServerManager.  This makes it possible to shuffle during tests without actually waiting >120s.
 2016-03-26 23:41:01 -07:00
Sean Chittenden d275cac1a3 Logging improvements 
Comment out noisly loggers for the time being.

Improve the final logging statement to be useful and hint what the next active server for the client is going to be.
 2016-03-26 22:41:08 -07:00
Sean Chittenden 35ff2eb71a Standardize the log message based on the package 
This log statement used to belong in the consul package but has since moved to the server manager package.
 2016-03-26 22:29:00 -07:00
Sean Chittenden e327630523 Reduce the error level from Fatal when unit testing 2016-03-26 22:07:09 -07:00
Sean Chittenden 92c2e8e668 Start server rebalance task after init'ing Serf 
Now that there is no longer an event loop driven directly by Serf, start the ServerManager task after Serf has been setup.  When testing and adjusting timers and timeouts to unreasonably low values, it's possible to tickle a race condition where Serf's NumNodes() would fail because Serf had not been initialized.
 2016-03-26 22:04:41 -07:00
Sean Chittenden ee95c55d88 Catch up to a few renames 2016-03-26 19:32:11 -07:00
Sean Chittenden dc291e4027 Use empty string for addr in ServerDetails.String() 2016-03-26 19:30:04 -07:00
Sean Chittenden 970938c2dd Guard against a nil ServerDetails.Addr 
It's not clear how or why this would ever be nil, but some of the unit tests produce a nil addr.  Be defensive.
 2016-03-26 19:29:31 -07:00
Sean Chittenden ca5950a538 Proactively ping server before rotation 
Before shuffling the server list, proactively ping the next server in the list to establish the connection and verify the remote endpoint is healthy.
 2016-03-26 19:28:13 -07:00
Sean Chittenden 18270bbd04 Factor out the shuffle server 2016-03-26 19:19:04 -07:00
Sean Chittenden 90d626b5d9 Revise comments re: cycleServer 
Improve the comments to discuss what happens presently.  Add a note to consider possibly calling to TestConsulServer proactively.
 2016-03-26 18:53:13 -07:00
Sean Chittenden cf59a860e7 Comment why the interface is needed: cyclic import 2016-03-26 18:38:35 -07:00
Sean Chittenden 3ecd72f3b5 Add a struct key type for server_details 2016-03-26 17:58:12 -07:00
Sean Chittenden ae32a3ceae Merge pull request #1873 from hashicorp/f-rebalance-worker-0.7 
Periodically rebalance the servers that agents talk to
 2016-03-25 15:03:18 -07:00
Sean Chittenden 5893bd5a35 Add additional checks 2016-03-25 14:40:46 -07:00
Sean Chittenden d18e4d7455 Delete the right tag 
"role" != "consul"
 2016-03-25 14:31:48 -07:00
Sean Chittenden b1194e83cb Don't pass in sm, server manager is already in scope 
Go closures are implicitly capturing lambdas.
 2016-03-25 14:10:09 -07:00
Sean Chittenden a3a0eeeadd Trim residual complexity from server join notifications 
Now that serf node join events are decoupled from rebalancing activities completely, remove the complixity of draining the channel and ensuring only one go routine was rebalancing the server list.

Now that we're no longer initializing a notification channel, we can remove the config load/save from `Start()`
 2016-03-25 14:06:35 -07:00
Sean Chittenden a71fbe57e3 Only log in FindServers 
In FindServer this is a useful warning hinting why its call failed. RPC returns error and leaves it to the higher level caller to do whatever it wants. As an operator, I'd have the detail necessary to know why the RPC call(s) failed.
 2016-03-25 13:58:50 -07:00
Sean Chittenden 58246fcc0b Initialize the rebalancce to clientRPCMinReuseDuration 
In an earlier version there was a channel to notify when a new server was added, however this has long since been removed.  Just default to the sane value of 2min before the first rebalance calc takes place.

Pointed out by: slackpad
 2016-03-25 13:46:18 -07:00
Sean Chittenden 4fec6a9608 Guard against very small or negative rates 
Pointed out by: slackpad
 2016-03-25 13:31:55 -07:00
Sean Chittenden d9251e30c8 Use range vs for 
Returning a new array vs mutating an array in place so we can use range now.
 2016-03-25 13:08:08 -07:00
Sean Chittenden 9c18bb5f1c Comment updates 2016-03-25 13:06:59 -07:00
Sean Chittenden 0b3f6932df Only rotate server list with more than one server 
Fantastic observation by slackpad.  This was left over from when there was a boolean for health in the server struct (vs current strategy where we use server position in the list and rely on serf to cleanup the stale members).

Pointed out by: slackpad
 2016-03-25 12:54:36 -07:00
Sean Chittenden 24eb274860 Relocate saveServerConfig next to getServerConfig 
Requested by: slackpad
 2016-03-25 12:41:22 -07:00
Sean Chittenden b00db393e7 Clarify that ConsulClusterInfo is an interface over serf 
An interface was used to break a cyclic import dependency.
 2016-03-25 12:38:40 -07:00
Sean Chittenden b8bbdb9e7a Reword comment after moving code into new packages 2016-03-25 12:34:46 -07:00
Sean Chittenden 68183c4378 Change initialReblaanaceTimeout to a time.Duration 
Pointed out by: @slackpad
 2016-03-25 12:34:12 -07:00
Sean Chittenden 3433feb93b Negative check: test an invalid condition 2016-03-25 12:22:33 -07:00
Sean Chittenden 0f3ad9c120 Test to make sure bootstrap is missing 2016-03-25 12:20:12 -07:00
Sean Chittenden 7a2d30d1cf Be more Go idiomatic w/ variable names: s/valid/ok/g 
Cargo culting is bad, m'kay?

Pointy Hat: sean-
 2016-03-25 12:14:24 -07:00
Sean Chittenden 9daccb8b41 Fix stale comment 
Pointed out by: @slackpad
 2016-03-25 12:00:40 -07:00
Sean Chittenden db72041063 Add a comment for Client serverMgr 2016-03-25 11:59:27 -07:00
James Phillips 3340d7ccd7 Merge pull request #1876 from hashicorp/f-tls-helper 
Adds TLS config helper to API client.
 2016-03-24 11:34:24 -07:00
James Phillips 0eb6279c5e Improves the comment for the Address field. 2016-03-24 11:33:44 -07:00
James Phillips e3f6c6a798 Merge pull request #1877 from hashicorp/api-constants 
Added some constants in the api for check health statuses
 2016-03-24 11:29:11 -07:00
Diptanu Choudhury 4811a72d80 Added some constants in the api for check health statuses 2016-03-24 11:26:07 -07:00
James Phillips 1cfed981b3 Adds TLS config helper to API client. 2016-03-24 11:24:18 -07:00