The DNS config parameters `recursors` and `dns_config.*` are now hot
reloaded on SIGHUP or `consul reload` and do not need an agent restart
to be modified.
Config is stored in an atomic.Value and loaded at the beginning of each
request. Reloading only affects requests that start _after_ the
reload. Ongoing requests are not affected. To match the current
behavior the recursor handler is loaded and unloaded as needed on config
reload.
Fixes#4673
Supercedes: #5677
There was an error decoding `map[string]string` values due to Go strings being immutable. This was fixes in our go-msgpack fork.
Due to an unintended order of operations issue with integer division
TestSessionTTLRenew was sleeping for 0s every time.
Also add explicit failures for when the various session renewal returns
nil unexpectedly.
Fixes: #4222
# Data Filtering
This PR will implement filtering for the following endpoints:
## Supported HTTP Endpoints
- `/agent/checks`
- `/agent/services`
- `/catalog/nodes`
- `/catalog/service/:service`
- `/catalog/connect/:service`
- `/catalog/node/:node`
- `/health/node/:node`
- `/health/checks/:service`
- `/health/service/:service`
- `/health/connect/:service`
- `/health/state/:state`
- `/internal/ui/nodes`
- `/internal/ui/services`
More can be added going forward and any endpoint which is used to list some data is a good candidate.
## Usage
When using the HTTP API a `filter` query parameter can be used to pass a filter expression to Consul. Filter Expressions take the general form of:
```
<selector> == <value>
<selector> != <value>
<value> in <selector>
<value> not in <selector>
<selector> contains <value>
<selector> not contains <value>
<selector> is empty
<selector> is not empty
not <other expression>
<expression 1> and <expression 2>
<expression 1> or <expression 2>
```
Normal boolean logic and precedence is supported. All of the actual filtering and evaluation logic is coming from the [go-bexpr](https://github.com/hashicorp/go-bexpr) library
## Other changes
Adding the `Internal.ServiceDump` RPC endpoint. This will allow the UI to filter services better.
* Docker based builds can now use the module cache
* Simplify building the consul-dev docker image.
* Make sure to pull the latest consul image.
* Allow selecting base image version for the dev image
* build: use only version tags in version output now api is tagged too
Fixes#5621
Since we now have api package tags, our build tooling was picking up api tag when working out version to bake into builds.
This fixes it by restricting to only tags that start with `v`.
Before:
```
$ make version
Version: 1.4.4
Version + release: 1.4.4-dev
Version + git: api/v1.0.1-90-g3ce60db0c
Version + release + git: api/v1.0.1-90-g3ce60db0c-dev (3ce60db0c)
```
After:
```
$ make version
Version: 1.4.4
Version + release: 1.4.4-dev
Version + git: v1.4.4-126-g3ce60db0c
Version + release + git: v1.4.4-126-g3ce60db0c-dev (3ce60db0c)
```
* Update GNUmakefile
Alvin Huang