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## Summary Add a new `circuit_breaker_thresholds` option: ```yaml circuit_breaker_thresholds: max_connections: 1 max_pending_requests: 2 max_requests: 3 max_retries: 4 max_connection_pools: 5 ``` This option can be set at the global level or at the route level. Each threshold is optional and when not set a default will be used. For internal clusters we will disable the circuit breaker. For normal routes we will use the envoy defaults. ## Related issues - [ENG-2310](https://linear.app/pomerium/issue/ENG-2310/add-circuit-breaker-settings-per-route) ## Checklist - [x] reference any related issues - [x] updated unit tests - [x] add appropriate label (`enhancement`, `bug`, `breaking`, `dependencies`, `ci`) - [x] ready for review
48 lines
1.9 KiB
Go
48 lines
1.9 KiB
Go
package config
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import (
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"errors"
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"github.com/mitchellh/mapstructure"
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"github.com/spf13/viper"
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"google.golang.org/protobuf/encoding/protojson"
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"github.com/pomerium/pomerium/config/otelconfig"
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)
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const (
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toKey = "to"
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envoyOptsKey = "_envoy_opts"
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)
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var (
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errKeysMustBeStrings = errors.New("cannot convert nested map: all keys must be strings")
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errZeroWeight = errors.New("zero load balancing weight not permitted")
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errEndpointWeightsSpec = errors.New("either no weights should be provided, or all endpoints must have non-zero weight specified")
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errHostnameMustBeSpecified = errors.New("endpoint hostname must be specified")
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errSchemeMustBeSpecified = errors.New("url scheme must be provided")
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errEmptyUrls = errors.New("url list is empty")
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errEitherToOrRedirectOrResponseRequired = errors.New("policy should have either `to` or `redirect` or `response` defined")
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)
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var protoPartial = protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
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// ViperPolicyHooks are used to decode options and policy coming from YAML and env vars
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var ViperPolicyHooks = viper.DecodeHook(mapstructure.ComposeDecodeHookFunc(
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mapstructure.StringToTimeDurationHookFunc(),
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mapstructure.StringToSliceHookFunc(","),
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// decode policy including all protobuf-native notations - i.e. duration as `1s`
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// https://developers.google.com/protocol-buffers/docs/proto3#json
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DecodePolicyHookFunc(),
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// parse base-64 encoded POLICY that is bound to environment variable
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DecodePolicyBase64Hook(),
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decodeNullBoolHookFunc(),
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decodeNullUint32HookFunc(),
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decodeJWTClaimHeadersHookFunc(),
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decodeBearerTokenFormatHookFunc(),
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decodeCodecTypeHookFunc(),
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decodePPLPolicyHookFunc(),
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decodeSANMatcherHookFunc(),
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decodeStringToMapHookFunc(),
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otelconfig.OtelDurationFunc(),
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))
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