xds: Add a KeyValueStore-backed xDS delegate extension to contrib #77
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An xDS delegate extension point was added in envoyproxy#22473 to enable custom behavior upon receiving and loading xDS resources. This change creates an implementation of the XdsResourcesDelegate interface that is backed by a KeyValueStore. The intended use case is to enable persisting xDS resources and loading them on startup in Envoy Mobile, in the event that the xDS control plane is unreachable. Signed-off-by: Ali Beyad <abeyad@google.com>
alyssawilk
reviewed
Aug 8, 2022
| // distinct key namespace. | ||
| constexpr char KEY_PREFIX[] = "XDS_CONFIG"; | ||
| // The delimiter between parts of the key. | ||
| constexpr char DELIMITER[] = "*+"; |
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definitely worth checking if there's constraints on prefs key naming where + or URL characters won't work (if we have to base64 encode or some such)
| const std::string filename = TestEnvironment::temporaryPath("dns_cache.txt"); | ||
| ::unlink(filename.c_str()); | ||
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| return fmt::format(R"EOF( |
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in general we want to addconfigModifiers or use prior const config
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| std::string bootstrapConfig() { | ||
| const std::string filename = TestEnvironment::temporaryPath("dns_cache.txt"); | ||
| ::unlink(filename.c_str()); |
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yaaas. Came here to make this comment, and you already did it, haha
| static constexpr char RTDS_CLUSTER_NAME[] = "rtds_cluster"; | ||
| static constexpr char CLIENT_CERT_NAME[] = "client_cert"; | ||
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| std::string bootstrapConfig() { |
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I do think this is worth unit tests as well, as they're easier for testing updates, eviction etc.
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/cc @goaway FYI, still a WIP |
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An xDS delegate extension point was added in
envoyproxy#22473 to enable custom behavior
upon receiving and loading xDS resources. This change creates an
implementation of the XdsResourcesDelegate interface that is backed by a
KeyValueStore.
The intended use case is to enable persisting xDS resources and loading
them on startup in Envoy Mobile, in the event that the xDS control plane
is unreachable.
Signed-off-by: Ali Beyad abeyad@google.com
Commit Message:
Additional Description:
Risk Level:
Testing:
Docs Changes:
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Platform Specific Features:
[Optional Runtime guard:]
[Optional Fixes #Issue]
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[Optional Deprecated:]
[Optional API Considerations:]