* new config parser for agent
This patch implements a new config parser for the consul agent which
makes the following changes to the previous implementation:
* add HCL support
* all configuration fragments in tests and for default config are
expressed as HCL fragments
* HCL fragments can be provided on the command line so that they
can eventually replace the command line flags.
* HCL/JSON fragments are parsed into a temporary Config structure
which can be merged using reflection (all values are pointers).
The existing merge logic of overwrite for values and append
for slices has been preserved.
* A single builder process generates a typed runtime configuration
for the agent.
The new implementation is more strict and fails in the builder process
if no valid runtime configuration can be generated. Therefore,
additional validations in other parts of the code should be removed.
The builder also pre-computes all required network addresses so that no
address/port magic should be required where the configuration is used
and should therefore be removed.
* Upgrade github.com/hashicorp/hcl to support int64
* improve error messages
* fix directory permission test
* Fix rtt test
* Fix ForceLeave test
* Skip performance test for now until we know what to do
* Update github.com/hashicorp/memberlist to update log prefix
* Make memberlist use the default logger
* improve config error handling
* do not fail on non-existing data-dir
* experiment with non-uniform timeouts to get a handle on stalled leader elections
* Run tests for packages separately to eliminate the spurious port conflicts
* refactor private address detection and unify approach for ipv4 and ipv6.
Fixes#2825
* do not allow unix sockets for DNS
* improve bind and advertise addr error handling
* go through builder using test coverage
* minimal update to the docs
* more coverage tests fixed
* more tests
* fix makefile
* cleanup
* fix port conflicts with external port server 'porter'
* stop test server on error
* do not run api test that change global ENV concurrently with the other tests
* Run remaining api tests concurrently
* no need for retry with the port number service
* monkey patch race condition in go-sockaddr until we understand why that fails
* monkey patch hcl decoder race condidtion until we understand why that fails
* monkey patch spurious errors in strings.EqualFold from here
* add test for hcl decoder race condition. Run with go test -parallel 128
* Increase timeout again
* cleanup
* don't log port allocations by default
* use base command arg parsing to format help output properly
* handle -dc deprecation case in Build
* switch autopilot.max_trailing_logs to int
* remove duplicate test case
* remove unused methods
* remove comments about flag/config value inconsistencies
* switch got and want around since the error message was misleading.
* Removes a stray debug log.
* Removes a stray newline in imports.
* Fixes TestACL_Version8.
* Runs go fmt.
* Adds a default case for unknown address types.
* Reoders and reformats some imports.
* Adds some comments and fixes typos.
* Reorders imports.
* add unix socket support for dns later
* drop all deprecated flags and arguments
* fix wrong field name
* remove stray node-id file
* drop unnecessary patch section in test
* drop duplicate test
* add test for LeaveOnTerm and SkipLeaveOnInt in client mode
* drop "bla" and add clarifying comment for the test
* split up tests to support enterprise/non-enterprise tests
* drop raft multiplier and derive values during build phase
* sanitize runtime config reflectively and add test
* detect invalid config fields
* fix tests with invalid config fields
* use different values for wan sanitiziation test
* drop recursor in favor of recursors
* allow dns_config.udp_answer_limit to be zero
* make sure tests run on machines with multiple ips
* Fix failing tests in a few more places by providing a bind address in the test
* Gets rid of skipped TestAgent_CheckPerformanceSettings and adds case for builder.
* Add porter to server_test.go to make tests there less flaky
* go fmt
This creates a simplified helper for temporary directories and files.
All path names are prefixed with the name of the current test.
All files and directories are stored either in /tmp/consul-test
or /tmp if the former could not be created.
Using the system temp dir breaks some tests on macOS where the unix
socket path becomes too long.
The current retry framework in testutil/testprc.WaitForResult uses
a func() (bool, error) callback until it succeeds or times out.
It captures the last error and returns it.
if err := testutil.WaitForResult(t, func() (bool, error) {
if err := foo(); err != nil {
return false, err
}
...
return true, nil
}); err != nil {
t.Fatal(err)
}
This makes the test functions more complex than they need to be since
both the boolean and the error indicate a success or a failure.
The retry.Run framework uses a an approach similar to t.Run()
from the testing framework.
retry.Run(t, func(r *retry.R) {
if err := foo(); err != nil {
r.Fatal(err)
}
})
The behavior of the Run function is configurable so that different
timeouts can be used for different tests.
`AddAccessibleService` works just like `AddService` but also passing
"address" and "port". It is helpfu when you need to prepare a
fakeService that will be accessed later in target source code.
This patch removes duplicate internal copies of constants in the structs
package which are also defined in the api package. The api.KVOp type
with all its values for the TXN endpoint and the api.HealthXXX constants
are now used throughout the codebase.
This resulted in some circular dependencies in the testutil package
which have been resolved by copying code and constants and moving the
WaitForLeader function into a separate testrpc package.
Ended up removing the leader_test.go server address change test as part
of this. The join was failing becase we were using a new node name with
the new logic here, but realized this was hitting some of the memberlist
conflict logic and not working as we expected. We need some additional
work to fully support address changes, so removed the test for now.
There's likely a race (related to https://github.com/hashicorp/consul/issues/2644) where the catalog update might be in but the leader tracking doesn't report a leader, so this blocks forever and then times out. As a workaround we can lower the query wait time to always allow for a few retries.
The last change here made the time overall theoretically the same, but the overhead of running so quickly before probably meant that we were spending longer. Tests seemed marginal in Travis so doubling this to see how things go.
This bit me on CI. The current behavior of the testutil server is to skip if consul isn't present. When lots of output is scrolling by, you're likely to miss the message that the test was skipped. Instead, I propose that we hard fatal if consul doesn't exist, and upstream consumers can skip the tests if they want.
The testutil server uses an atomic incrementer to generate unique port
numbers. This works great until tests are run in parallel, _across
packages_. Because each package starts at the same "offset" idx, they
collide.
One way to overcome this is to run each packages' test in isolation, but
that makes the test suite much longer as it does not maximize
parallelization. Alternatively, instead of having "predictable" ports,
we can let the OS choose a random open port automatically.
This still has a (albeit smaller) race condition in that the OS could
return an open port twice, before the server has a chance to actually
start and occupy said port. In practice, I have not been able to hit
this race condition, so it either doesn't happen or it happens far less
frequently that the existing implementation.
I'm not sure how I feel about the panic, but this is just test code, so
I'm including to say it's okay?
Frank Schröder
James Phillips
Cyril Gaudin
Ethan Chu
Kyle Havlovitz
Seth Vargo
Jeff Mitchell