* add config watcher to the config package
* add logging to watcher
* add test and refactor to add WatcherEvent.
* add all API calls and fix a bug with recreated files
* add tests for watcher
* remove the unnecessary use of context
* Add debug log and a test for file rename
* use inode to detect if the file is recreated/replaced and only listen to create events.
* tidy ups (#1535)
* tidy ups
* Add tests for inode reconcile
* fix linux vs windows syscall
* fix linux vs windows syscall
* fix windows compile error
* increase timeout
* use ctime ID
* remove remove/creation test as it's a use case that fail in linux
* fix linux/windows to use Ino/CreationTime
* fix the watcher to only overwrite current file id
* fix linter error
* fix remove/create test
* set reconcile loop to 200 Milliseconds
* fix watcher to not trigger event on remove, add more tests
* on a remove event try to add the file back to the watcher and trigger the handler if success
* fix race condition
* fix flaky test
* fix race conditions
* set level to info
* fix when file is removed and get an event for it after
* fix to trigger handler when we get a remove but re-add fail
* fix error message
* add tests for directory watch and fixes
* detect if a file is a symlink and return an error on Add
* rename Watcher to FileWatcher and remove symlink deref
* add fsnotify@v1.5.1
* fix go mod
* fix flaky test
* Apply suggestions from code review
Co-authored-by: Ashwin Venkatesh <ashwin@hashicorp.com>
* fix a possible stack overflow
* do not reset timer on errors, rename OS specific files
* start the watcher when creating it
* fix data race in tests
* rename New func
* do not call handler when a remove event happen
* events trigger on write and rename
* fix watcher tests
* make handler async
* remove recursive call
* do not produce events for sub directories
* trim "/" at the end of a directory when adding
* add missing test
* fix logging
* add todo
* fix failing test
* fix flaking tests
* fix flaky test
* add logs
* fix log text
* increase timeout
* reconcile when remove
* check reconcile when removed
* fix reconcile move test
* fix logging
* delete invalid file
* Apply suggestions from code review
Co-authored-by: R.B. Boyer <4903+rboyer@users.noreply.github.com>
* fix review comments
* fix is watched to properly catch a remove
* change test timeout
* fix test and rename id
* fix test to create files with different mod time.
* fix deadlock when stopping watcher
* Apply suggestions from code review
Co-authored-by: R.B. Boyer <4903+rboyer@users.noreply.github.com>
* fix a deadlock when calling stop while emitting event is blocked
* make sure to close the event channel after the event loop is done
* add go doc
* back date file instead of sleeping
* Apply suggestions from code review
Co-authored-by: R.B. Boyer <4903+rboyer@users.noreply.github.com>
* check error
Co-authored-by: Ashwin Venkatesh <ashwin@hashicorp.com>
Co-authored-by: R.B. Boyer <4903+rboyer@users.noreply.github.com>
Otherwise when the query times out we might incorrectly send a value for
the reply, when we should send an empty reply.
Also document errNotFound and how to handle the result in that case.
The interface is documented as 'Sign will only return the leaf', and the other providers
only return the leaf. It seems like this was added during the initial implementation, so
is likely just something we missed. It doesn't break anything , but it does cause confusing cert chains
in the API response which could break something in the future.
* Parse datacenter from request
- Parse the value of the datacenter from the create/delete requests for AuthMethods and BindingRules so that they can be created in and deleted from the datacenters specified in the request.
By using the query results as state.
Blocking queries are efficient when the query matches some results,
because the ModifyIndex of those results, returned as queryMeta.Mindex,
will never change unless the items themselves change.
Blocking queries for non-existent items are not efficient because the
queryMeta.Index can (and often does) change when other entities are
written.
This commit reduces the churn of these queries by using a different
comparison for "has changed". Instead of using the modified index, we
use the existence of the results. If the previous result was "not found"
and the new result is still "not found", we know we can ignore the
modified index and continue to block.
This is done by setting the minQueryIndex to the returned
queryMeta.Index, which prevents the query from returning before a state
change is observed.
This test shows how blocking queries are not efficient when the query
returns no results. The test fails with 100+ calls instead of the
expected 2.
This test is still a bit flaky because it depends on the timing of the
writes. It can sometimes return 3 calls.
A future commit should fix this and make blocking queries even more
optimal for not-found results.
Follow the Go convention of accepting a small interface that documents
the methods used by the function.
Clarify the rules for implementing a query function passed to
blockingQuery.
This will both save on unnecessary raft operations as well as
unnecessarily incrementing the raft modify index of config entries
subject to no-op updates.
This commit syncs ENT changes to the OSS repo.
Original commit details in ENT:
```
commit 569d25f7f4578981c3801e6e067295668210f748
Author: FFMMM <FFMMM@users.noreply.github.com>
Date: Thu Feb 10 10:23:33 2022 -0800
Vendor fork net rpc (#1538)
* replace net/rpc w consul-net-rpc/net/rpc
Signed-off-by: FFMMM <FFMMM@users.noreply.github.com>
* replace msgpackrpc and go-msgpack with fork from mono repo
Signed-off-by: FFMMM <FFMMM@users.noreply.github.com>
* gofmt all files touched
Signed-off-by: FFMMM <FFMMM@users.noreply.github.com>
```
Signed-off-by: FFMMM <FFMMM@users.noreply.github.com>
The race detector noticed this initially in `TestAgentConfigWatcherSidecarProxy` but it is not restricted to just tests.
The two main changes here were:
- ensure that before we mutate the internal `agent/local` representation of a Service (for tags or VIPs) we clone those fields
- ensure that there's no function argument joint ownership between the caller of a function and the local state when calling `AddService`, `AddCheck`, and related using `copystructure` for now.
* First phase of refactoring PermissionDeniedError
Add extended type PermissionDeniedByACLError that captures information
about the accessor, particular permission type and the object and name
of the thing being checked.
It may be worth folding the test and error return into a single helper
function, that can happen at a later date.
Signed-off-by: Mark Anderson <manderson@hashicorp.com>
Transparent proxies typically cannot dial upstreams in remote
datacenters. However, if their upstream configures a redirect to a
remote DC then the upstream targets will be in another datacenter.
In that sort of case we should use the WAN address for the passthrough.
Due to timing, a transparent proxy could have two upstreams to dial
directly with the same address.
For example:
- The orders service can dial upstreams shipping and payment directly.
- An instance of shipping at address 10.0.0.1 is deregistered.
- Payments is scaled up and scheduled to have address 10.0.0.1.
- The orders service receives the event for the new payments instance
before seeing the deregistration for the shipping instance. At this
point two upstreams have the same passthrough address and Envoy will
reject the listener configuration.
To disambiguate this commit considers the Raft index when storing
passthrough addresses. In the example above, 10.0.0.1 would only be
associated with the newer payments service instance.
Transparent proxies can set up filter chains that allow direct
connections to upstream service instances. Services that can be dialed
directly are stored in the PassthroughUpstreams map of the proxycfg
snapshot.
Previously these addresses were not being cleaned up based on new
service health data. The list of addresses associated with an upstream
service would only ever grow.
As services scale up and down, eventually they will have instances
assigned to an IP that was previously assigned to a different service.
When IP addresses are duplicated across filter chain match rules the
listener config will be rejected by Envoy.
This commit updates the proxycfg snapshot management so that passthrough
addresses can get cleaned up when no longer associated with a given
upstream.
There is still the possibility of a race condition here where due to
timing an address is shared between multiple passthrough upstreams.
That concern is mitigated by #12195, but will be further addressed
in a follow-up.
Fixes#11876
This enforces that multiple xDS mutations are not issued on the same ADS connection at once, so that we can 100% control the order that they are applied. The original code made assumptions about the way multiple in-flight mutations were applied on the Envoy side that was incorrect.
This commit makes two changes to the validation.
Previously we would call this validation in GenerateRoot, which happens
both on initialization (when a follower becomes leader), and when a
configuration is updated. We only want to do this validation during
config update so the logic was moved to the UpdateConfiguration
function.
Previously we would compare the config values against the actual cert.
This caused problems when the cert was created manually in Vault (not
created by Consul). Now we compare the new config against the previous
config. Using a already created CA cert should never error now.
Adding the key bit and types to the config should only error when
the previous values were not the defaults.
These two tests require debug logging enabled, because they look for log lines.
Also switched to testify assertions because the previous errors were not clear.
This test found a bug in the secondary. We were appending the root cert
to the PEM, but that cert was already appended. This was failing
validation in Vault here:
https://github.com/hashicorp/vault/blob/sdk/v0.3.0/sdk/helper/certutil/types.go#L329
Previously this worked because self signed certs have the same
SubjectKeyID and AuthorityKeyID. So having the same self-signed cert
repeated doesn't fail that check.
However with an intermediate that is not self-signed, those values are
different, and so we fail the check. A test I added in a previous commit
should show that this continues to work with self-signed root certs as
well.
This is safer than embedding two interface because there are a number of
places where we check the concrete type. If we check the concrete type
on the top-level interface it will fail. So instead expose the
ACLIdentity from a method.
This change allows us to remove one of the last remaining duplicate
resolve token methods (Server.ResolveToken).
With this change we are down to only 2, where the second one also
handles setting the default EnterpriseMeta from the token.
When a wildcard xDS type (LDS/CDS/SRDS) reconnects from a delta xDS stream,
prior to envoy `1.19.0` it would populate the `ResourceNamesSubscribe` field
with the full list of currently subscribed items, instead of simply omitting it
to infer that it wanted everything (which is what wildcard mode means).
This upstream issue was filed in envoyproxy/envoy#16063 and fixed in
envoyproxy/envoy#16153 which went out in Envoy `1.19.0` and is fixed in later
versions (later refactored in envoyproxy/envoy#16855).
This PR conditionally forces LDS/CDS to be wildcard-only even when the
connected Envoy requests a non-wildcard subscription, but only does so on
versions prior to `1.19.0`, as we should not need to do this on later versions.
This fixes the failure case as described here: #11833 (comment)
Co-authored-by: Huan Wang <fredwanghuan@gmail.com>
Now that ACLResolver is embedded we don't need ResolveTokenToIdentity on
Client and Server.
Moving ResolveTokenAndDefaultMeta to ACLResolver removes the duplicate
implementation.
set -euo pipefail
unset CDPATH
cd "$(dirname "$0")"
for f in $(git grep '\brequire := require\.New(' | cut -d':' -f1 | sort -u); do
echo "=== require: $f ==="
sed -i '/require := require.New(t)/d' $f
# require.XXX(blah) but not require.XXX(tblah) or require.XXX(rblah)
sed -i 's/\brequire\.\([a-zA-Z0-9_]*\)(\([^tr]\)/require.\1(t,\2/g' $f
# require.XXX(tblah) but not require.XXX(t, blah)
sed -i 's/\brequire\.\([a-zA-Z0-9_]*\)(\(t[^,]\)/require.\1(t,\2/g' $f
# require.XXX(rblah) but not require.XXX(r, blah)
sed -i 's/\brequire\.\([a-zA-Z0-9_]*\)(\(r[^,]\)/require.\1(t,\2/g' $f
gofmt -s -w $f
done
for f in $(git grep '\bassert := assert\.New(' | cut -d':' -f1 | sort -u); do
echo "=== assert: $f ==="
sed -i '/assert := assert.New(t)/d' $f
# assert.XXX(blah) but not assert.XXX(tblah) or assert.XXX(rblah)
sed -i 's/\bassert\.\([a-zA-Z0-9_]*\)(\([^tr]\)/assert.\1(t,\2/g' $f
# assert.XXX(tblah) but not assert.XXX(t, blah)
sed -i 's/\bassert\.\([a-zA-Z0-9_]*\)(\(t[^,]\)/assert.\1(t,\2/g' $f
# assert.XXX(rblah) but not assert.XXX(r, blah)
sed -i 's/\bassert\.\([a-zA-Z0-9_]*\)(\(r[^,]\)/assert.\1(t,\2/g' $f
gofmt -s -w $f
done
The gist here is that now we use a value-type struct proxycfg.UpstreamID
as the map key in ConfigSnapshot maps where we used to use "upstream
id-ish" strings. These are internal only and used just for bidirectional
trips through the agent cache keyspace (like the discovery chain target
struct).
For the few places where the upstream id needs to be projected into xDS,
that's what (proxycfg.UpstreamID).EnvoyID() is for. This lets us ALWAYS
inject the partition and namespace into these things without making
stuff like the golden testdata diverge.
Remove some unnecessary comments around query_blocking metric. The only
line that needs any comments in the atomic decrement.
Cleanup the block and return comments and logic. The old comment about
AbandonCh may have been relevant before, but it is expected behaviour
now.
The logic was simplified by inverting the err condition.
This helps keep the logic in blockingQuery more focused. In the future we
may have a separate struct for RPC queries which may allow us to move this
off of Server.
This safeguard should be safe to apply in general. We are already
applying it to non-blocking queries that call blockingQuery, so it
should be fine to apply it to others.
To remove the TODO, and make it more readable.
In general this reduces the scope of variables, making them easier to reason about.
It also introduces more early returns so that we can see the flow from the structure
of the function.
* xds: refactor ingress listener SDS configuration
* xds: update resolveListenerSDS call args in listeners_test
* ingress: add TLS min, max and cipher suites to GatewayTLSConfig
* xds: implement envoyTLSVersions and envoyTLSCipherSuites
* xds: merge TLS config
* xds: configure TLS parameters with ingress TLS context from leaf
* xds: nil check in resolveListenerTLSConfig validation
* xds: nil check in makeTLSParameters* functions
* changelog: add entry for TLS params on ingress config entries
* xds: remove indirection for TLS params in TLSConfig structs
* xds: return tlsContext, nil instead of ambiguous err
Co-authored-by: Chris S. Kim <ckim@hashicorp.com>
* xds: switch zero checks to types.TLSVersionUnspecified
* ingress: add validation for ingress config entry TLS params
* ingress: validate listener TLS config
* xds: add basic ingress with TLS params tests
* xds: add ingress listeners mixed TLS min version defaults precedence test
* xds: add more explicit tests for ingress listeners inheriting gateway defaults
* xds: add test for single TLS listener on gateway without TLS defaults
* xds: regen golden files for TLSVersionInvalid zero value, add TLSVersionAuto listener test
* types/tls: change TLSVersion to string
* types/tls: update TLSCipherSuite to string type
* types/tls: implement validation functions for TLSVersion and TLSCipherSuites, make some maps private
* api: add TLS params to GatewayTLSConfig, add tests
* api: add TLSMinVersion to ingress gateway config entry test JSON
* xds: switch to Envoy TLS cipher suite encoding from types package
* xds: fixup validation for TLSv1_3 min version with cipher suites
* add some kitchen sink tests and add a missing struct tag
* xds: check if mergedCfg.TLSVersion is in TLSVersionsWithConfigurableCipherSuites
* xds: update connectTLSEnabled comment
* xds: remove unsued resolveGatewayServiceTLSConfig function
* xds: add makeCommonTLSContextFromLeafWithoutParams
* types/tls: add LessThan comparator function for concrete values
* types/tls: change tlsVersions validation map from string to TLSVersion keys
* types/tls: remove unused envoyTLSCipherSuites
* types/tls: enable chacha20 cipher suites for Consul agent
* types/tls: remove insecure cipher suites from allowed config
TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256 and TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 are both explicitly listed as insecure and disabled in the Go source.
Refs https://cs.opensource.google/go/go/+/refs/tags/go1.17.3:src/crypto/tls/cipher_suites.go;l=329-330
* types/tls: add ValidateConsulAgentCipherSuites function, make direct lookup map private
* types/tls: return all unmatched cipher suites in validation errors
* xds: check that Envoy API value matching TLS version is found when building TlsParameters
* types/tls: check that value is found in map before appending to slice in MarshalEnvoyTLSCipherSuiteStrings
* types/tls: cast to string rather than fmt.Printf in TLSCihperSuite.String()
* xds: add TLSVersionUnspecified to list of configurable cipher suites
* structs: update note about config entry warning
* xds: remove TLS min version cipher suite unconfigurable test placeholder
* types/tls: update tests to remove assumption about private map values
Co-authored-by: R.B. Boyer <rb@hashicorp.com>
`newIntermediate` is always equal to `needsNewIntermediate`, so we can
remove the extra variable and use the original directly.
Also remove the `activeRoot.ID != newActiveRoot.ID` case from an if,
because that case is already checked above, and `needsNewIntermediate` will
already be true in that case.
This condition now reads a lot better:
> Persist a new root if we did not have one before, or if generated a new intermediate.
In the previous commit the single use of this storedRoot was removed.
In this commit the original objective is completed. The
Provider.ActiveRoot is being removed because
1. the secondary should get the active root from the Consul primary DC,
not the provider, so that secondary DCs do not need to communicate
with a provider instance in a different DC.
2. so that the Provider.ActiveRoot interface can be changed without
impacting other code paths.
This method had only one caller, which always looked for the active
root. This commit moves the lookup into the method to reduce the logic
in the one caller.
This is being done in preparation for a larger change. Keeping this
separate so it is easier to see.
The `storedRootID != primaryRoots.ActiveRootID` is being removed because
these can never be different.
The `storedRootID` comes from `provider.ActiveRoot`, the
`primaryRoots.ActiveRootID` comes from the store `CARoot` from the
primary. In both cases the source of the data is the primary DC.
Technically they could be different if someone modified the provider
outside of Consul, but that would break many things, so is not a
supported flow.
If these were out of sync because of ordering of events then the
secondary will soon receive an update to `primaryRoots` and everything
will be sorted out again.
ActiveRoot should not be called from the secondary DC, because there
should not be a requirement to run the same Vault instance in a
secondary DC. SignIntermediate is called in a secondary DC, so it should
not call ActiveRoot
We would also like to change the interface of ActiveRoot so that we can
support using an intermediate cert as the primary CA in Consul. In
preparation for making that change I am reducing the number of calls to
ActiveRoot, so that there are fewer code paths to modify when the
interface changes.
This change required a change to the mockCAServerDelegate we use in
tests. It was returning the RootCert for SignIntermediate, but that is
not an accurate fake of production. In production this would also be a
separate cert.
Immediately above this line we are already appending the full list of
intermediates. The `provider.ActiveIntermediate` MUST be in this list of
intermediates because it must be available to all the other non-leader
Servers. If it was not in this list of intermediates then any proxy
that received data from a non-leader would have the wrong certs.
This is being removed now because we are planning on changing the
`Provider.ActiveIntermediate` interface, and removing these extra calls ahead of
time helps make that change easier.
Using tracing and cpu profiling I found that the majority of the time in
these test cases is spent generating a private key. We really don't need
separate private keys, so we can generate only one and use it for all
cases.
With this change the test runs much faster.
Fix the name to match the function it is testing
Remove unused code
Fix the signature, instead of returning (error, string) which should be (string, error)
accept a testing.T to emit errors.
Handle the error from encode.
Update the `/agent/check/deregister/` API endpoint to return a 404
HTTP response code when an attempt is made to de-register a check ID
that does not exist on the agent.
This brings the behavior of /agent/check/deregister/ in line with the
behavior of /agent/service/deregister/ which was changed in #10632 to
similarly return a 404 when de-registering non-existent services.
Fixes#5821
* clone the service under lock to avoid a data race
* add change log
* create a struct and copy the pointer to mutate it to avoid a data race
* fix failing test
* revert added space
* add comments, to clarify the data race.
The only function passed to SnapshotRPC today always returns a nil error, so there's no
way to exercise this bug in practice. This change is being made for correctness so that
it doesn't become a problem in the future, if we ever pass a different function to
SnapshotRPC.
Error messages related to service and check operations previously included
the following substrings:
- service %q
- check %q
From this error message, it isn't clear that the expected field is the ID for
the entity, not the name. For example, if the user has a service named test,
the error message would read 'Unknown service "test"'. This is misleading -
a service with that *name* does exist, but not with that *ID*.
The substrings above have been modified to make it clear that ID is needed,
not name:
- service with ID %q
- check with ID %q
Previously we could get into a state where discovery chain entries were
not cleaned up after the associated watch was cancelled. These changes
add handling for that case where stray chain references are encountered.
When a URL path is not found, return a non-empty message with the 404 status
code to help the user understand what went wrong. If the URL path was not
prefixed with '/v1/', suggest that may be the cause of the problem (which is a
common mistake).
Co-authored-by: Chris S. Kim <ckim@hashicorp.com>
Co-authored-by: Dan Upton <daniel@floppy.co>
This query has been incorrectly querying by accessor ID since New ACLs
were added. However, the legacy token compat allowed this to continue to
work, since it made a fallback query for the anonymousToken ID.
PR #11184 removed this legacy token query, which means that the query by
accessor ID is now the only check for the anonymous token's existence.
This PR updates the GetBySecret call to use the secret ID of the token.
These helper functions actually end up hiding important setup details
that should be visible from the test case. We already have a convenient
way of setting this config when calling newTestServerWithConfig.
I suspect one problem was that we set structs.IntermediateCertRenewInterval to 1ms, which meant
that in some cases the intermediate could renew before we stored the original value.
Another problem was that the 'wait for intermediate' loop was calling the provider.ActiveIntermediate,
but the comparison needs to use the RPC endpoint to accurately represent a user request. So
changing the 'wait for' to use the state store ensures we don't race.
Also moves the patching into a separate function.
Removes the addition of ca.CertificateTimeDriftBuffer as part of calculating halfTime. This was added
in a previous commit to attempt to fix the flake, but it did not appear to fix the problem. Adding the
time here was making the tests fail when using the shared patch
function. It's not clear to me why, but there's no reason we should be
including this time in the halfTime calculation.
Use the new verifyLearfCert to show the cert verifies with intermediates
from both sources. This required using the RPC interface so that the
leaf pem was constructed correctly.
Add IndexedCARoots.Active since that is a common operation we see in a
few places.
Previously we had a couple copies that reproduced the FSM operation.
These copies introduce risk that the test does not accurately match
production.
This PR removes the test versions of the FSM operation, and exports the
real production FSM operation so that it can be used in tests.
The consul provider tests did need to change because of this. Previously
we would return a hardcoded value of 2, but in production this value is
always incremented.
