a7bf07e86a
This PR implements a c-ares based DNS resolver for EventEngine with the reference from the original [grpc_ares_wrapper.h](../blob/master/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.h). The PosixEventEngine DNSResolver is implemented on top of that. Tests which use the client channel resolver API ([resolver.h](../blob/master/src/core/lib/resolver/resolver.h#L54)) are ported, namely the [resolver_component_test.cc](../blob/master/test/cpp/naming/resolver_component_test.cc) and the [cancel_ares_query_test.cc](../blob/master/test/cpp/naming/cancel_ares_query_test.cc). The WindowsEventEngine DNSResolver will use the same EventEngine's grpc_ares_wrapper and will be worked on next. The [resolve_address_test.cc](https://github.com/grpc/grpc/blob/master/test/core/iomgr/resolve_address_test.cc) which uses the iomgr [DNSResolver](../blob/master/src/core/lib/iomgr/resolve_address.h#L44) API has been ported to EventEngine's dns_test.cc. That leaves only 2 tests which use iomgr's API, notably the [dns_resolver_cooldown_test.cc](../blob/master/test/core/client_channel/resolvers/dns_resolver_cooldown_test.cc) and the [goaway_server_test.cc](../blob/master/test/core/end2end/goaway_server_test.cc) which probably need to be restructured to use EventEngine DNSResolver (for one thing they override the original grpc_ares_wrapper's free functions). I will try to tackle these in the next step. <!-- If you know who should review your pull request, please assign it to that person, otherwise the pull request would get assigned randomly. If your pull request is for a specific language, please add the appropriate lang label. --> |
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| .. | ||
| utils | ||
| BUILD | ||
| address_sorting_test.cc | ||
| cancel_ares_query_test.cc | ||
| gen_build_yaml.py | ||
| generate_resolver_component_tests.bzl | ||
| manual_run_resolver_component_test.py | ||
| resolver_component_test.cc | ||
| resolver_component_tests_runner.py | ||
| resolver_component_tests_runner_invoker.cc | ||
| resolver_test_record_groups.yaml | ||