subsetv3

package
v1.33.0-20231012202027... Latest Latest
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Index

Constants

This section is empty.

Variables

View Source 
var (
	Subset_LbSubsetFallbackPolicy_name = map[int32]string{
		0: "NO_FALLBACK",
		1: "ANY_ENDPOINT",
		2: "DEFAULT_SUBSET",
	}
	Subset_LbSubsetFallbackPolicy_value = map[string]int32{
		"NO_FALLBACK":    0,
		"ANY_ENDPOINT":   1,
		"DEFAULT_SUBSET": 2,
	}
)

Enum value maps for Subset_LbSubsetFallbackPolicy.

View Source 
var (
	Subset_LbSubsetMetadataFallbackPolicy_name = map[int32]string{
		0: "METADATA_NO_FALLBACK",
		1: "FALLBACK_LIST",
	}
	Subset_LbSubsetMetadataFallbackPolicy_value = map[string]int32{
		"METADATA_NO_FALLBACK": 0,
		"FALLBACK_LIST":        1,
	}
)

Enum value maps for Subset_LbSubsetMetadataFallbackPolicy.

View Source 
var (
	Subset_LbSubsetSelector_LbSubsetSelectorFallbackPolicy_name = map[int32]string{
		0: "NOT_DEFINED",
		1: "NO_FALLBACK",
		2: "ANY_ENDPOINT",
		3: "DEFAULT_SUBSET",
		4: "KEYS_SUBSET",
	}
	Subset_LbSubsetSelector_LbSubsetSelectorFallbackPolicy_value = map[string]int32{
		"NOT_DEFINED":    0,
		"NO_FALLBACK":    1,
		"ANY_ENDPOINT":   2,
		"DEFAULT_SUBSET": 3,
		"KEYS_SUBSET":    4,
	}
)

Enum value maps for Subset_LbSubsetSelector_LbSubsetSelectorFallbackPolicy.

View Source 
var File_envoy_extensions_load_balancing_policies_subset_v3_subset_proto protoreflect.FileDescriptor

Functions

This section is empty.

Types

type Subset 

type Subset struct {

	// The behavior used when no endpoint subset matches the selected route's
	// metadata. The value defaults to
	// :ref:`NO_FALLBACK<envoy_v3_api_enum_value_extensions.load_balancing_policies.subset.v3.Subset.LbSubsetFallbackPolicy.NO_FALLBACK>`.
	FallbackPolicy Subset_LbSubsetFallbackPolicy `` /* 190-byte string literal not displayed */
	// Specifies the default subset of endpoints used during fallback if
	// fallback_policy is
	// :ref:`DEFAULT_SUBSET<envoy_v3_api_enum_value_extensions.load_balancing_policies.subset.v3.Subset.LbSubsetFallbackPolicy.DEFAULT_SUBSET>`.
	// Each field in default_subset is
	// compared to the matching LbEndpoint.Metadata under the “envoy.lb“
	// namespace. It is valid for no hosts to match, in which case the behavior
	// is the same as a fallback_policy of
	// :ref:`NO_FALLBACK<envoy_v3_api_enum_value_extensions.load_balancing_policies.subset.v3.Subset.LbSubsetFallbackPolicy.NO_FALLBACK>`.
	DefaultSubset *structpb.Struct `protobuf:"bytes,2,opt,name=default_subset,json=defaultSubset,proto3" json:"default_subset,omitempty"`
	// For each entry, LbEndpoint.Metadata's
	// “envoy.lb“ namespace is traversed and a subset is created for each unique
	// combination of key and value. For example:
	//
	// .. code-block:: json
	//
	//	{ "subset_selectors": [
	//	    { "keys": [ "version" ] },
	//	    { "keys": [ "stage", "hardware_type" ] }
	//	]}
	//
	// A subset is matched when the metadata from the selected route and
	// weighted cluster contains the same keys and values as the subset's
	// metadata. The same host may appear in multiple subsets.
	SubsetSelectors []*Subset_LbSubsetSelector `protobuf:"bytes,3,rep,name=subset_selectors,json=subsetSelectors,proto3" json:"subset_selectors,omitempty"`
	// By default, only when the request metadata has exactly the **same** keys as one of subset selectors and
	// the values of the related keys are matched, the load balancer will have a valid subset for the request.
	// For example, given the following subset selectors:
	//
	// .. code-block:: json
	//
	//	{ "subset_selectors": [
	//	    { "keys": [ "version" ] },
	//	    { "keys": [ "stage", "version" ] }
	//	]}
	//
	// A request with metadata “{"redundant-key": "redundant-value", "stage": "prod", "version": "v1"}“ or
	// “{"redundant-key": "redundant-value", "version": "v1"}“ will not have a valid subset even if the values
	// of keys “stage“ and “version“ are matched because of the redundant key/value pair in the request
	// metadata.
	//
	// By setting this field to true, the most appropriate keys will be filtered out from the request metadata
	// according to the subset selectors. And then the filtered keys and related values will be matched to find
	// the valid host subset. By this way, redundant key/value pairs are allowed in the request metadata. The keys
	// of a request metadata could be superset of the keys of the subset selectors and need not to be exactly the
	// same as the keys of the subset selectors.
	//
	// More specifically, if the keys of a request metadata is a superset of one of the subset selectors, then only
	// the values of the keys that in the selector keys will be matched. Take the above example, if the request
	// metadata is “{"redundant-key": "redundant-value", "stage": "prod", "version": "v1"}“, the load balancer
	// will only match the values of “stage“ and “version“ to find an appropriate subset because “stage“
	// “version“ are contained by the second subset selector and the redundant “redundant-key“ will be
	// ignored.
	//
	// .. note::
	//
	//	If the keys of request metadata is superset of multiple different subset selectors keys, the subset
	//	selector with most keys to win. For example, given subset selectors
	//	“{"subset_selectors": ["keys": ["A", "B", "C"], ["A", "B"]]}“ and request metadata “{"A": "-",
	//	"B": "-", "C": "-", "D": "-"}“, keys “A“, “B“, “C“ will be evaluated.
	//	If the keys of request metadata is superset of multiple different subset selectors keys and the number
	//	of selector keys are same, then the one placed in front to win. For example, given subset selectors
	//	“{"subset_selectors": ["keys": ["A", "B"], ["C", "D"]]}“ and request metadata “{"A": "-", "B": "-",
	//	"C": "-", "D": "-"}“, keys “A“, “B“ will be evaluated.
	AllowRedundantKeys bool `protobuf:"varint,10,opt,name=allow_redundant_keys,json=allowRedundantKeys,proto3" json:"allow_redundant_keys,omitempty"`
	// If true, routing to subsets will take into account the localities and locality weights of the
	// endpoints when making the routing decision.
	//
	// There are some potential pitfalls associated with enabling this feature, as the resulting
	// traffic split after applying both a subset match and locality weights might be undesirable.
	//
	// Consider for example a situation in which you have 50/50 split across two localities X/Y
	// which have 100 hosts each without subsetting. If the subset LB results in X having only 1
	// host selected but Y having 100, then a lot more load is being dumped on the single host in X
	// than originally anticipated in the load balancing assignment delivered via EDS.
	LocalityWeightAware bool `protobuf:"varint,4,opt,name=locality_weight_aware,json=localityWeightAware,proto3" json:"locality_weight_aware,omitempty"`
	// When used with locality_weight_aware, scales the weight of each locality by the ratio
	// of hosts in the subset vs hosts in the original subset. This aims to even out the load
	// going to an individual locality if said locality is disproportionately affected by the
	// subset predicate.
	ScaleLocalityWeight bool `protobuf:"varint,5,opt,name=scale_locality_weight,json=scaleLocalityWeight,proto3" json:"scale_locality_weight,omitempty"`
	// If true, when a fallback policy is configured and its corresponding subset fails to find
	// a host this will cause any host to be selected instead.
	//
	// This is useful when using the default subset as the fallback policy, given the default
	// subset might become empty. With this option enabled, if that happens the LB will attempt
	// to select a host from the entire cluster.
	PanicModeAny bool `protobuf:"varint,6,opt,name=panic_mode_any,json=panicModeAny,proto3" json:"panic_mode_any,omitempty"`
	// If true, metadata specified for a metadata key will be matched against the corresponding
	// endpoint metadata if the endpoint metadata matches the value exactly OR it is a list value
	// and any of the elements in the list matches the criteria.
	ListAsAny bool `protobuf:"varint,7,opt,name=list_as_any,json=listAsAny,proto3" json:"list_as_any,omitempty"`
	// Fallback mechanism that allows to try different route metadata until a host is found.
	// If load balancing process, including all its mechanisms (like
	// :ref:`fallback_policy<envoy_v3_api_field_extensions.load_balancing_policies.subset.v3.subset.fallback_policy>`)
	// fails to select a host, this policy decides if and how the process is repeated using another metadata.
	//
	// The value defaults to
	// :ref:`METADATA_NO_FALLBACK
	// <envoy_v3_api_enum_value_extensions.load_balancing_policies.subset.v3.subset.LbSubsetMetadataFallbackPolicy.METADATA_NO_FALLBACK>`.
	MetadataFallbackPolicy Subset_LbSubsetMetadataFallbackPolicy `` /* 224-byte string literal not displayed */
	// The child LB policy to create for endpoint-picking within the chosen subset.
	SubsetLbPolicy *v3.LoadBalancingPolicy `protobuf:"bytes,9,opt,name=subset_lb_policy,json=subsetLbPolicy,proto3" json:"subset_lb_policy,omitempty"`
	// contains filtered or unexported fields
}

Optionally divide the endpoints in this cluster into subsets defined by endpoint metadata and selected by route and weighted cluster metadata. [#next-free-field: 11]

func (*Subset) Descriptor deprecated 

func (*Subset) Descriptor() ([]byte, []int)

Deprecated: Use Subset.ProtoReflect.Descriptor instead.

func (*Subset) GetAllowRedundantKeys 

func (x *Subset) GetAllowRedundantKeys() bool

func (*Subset) GetDefaultSubset 

func (x *Subset) GetDefaultSubset() *structpb.Struct

func (*Subset) GetFallbackPolicy 

func (x *Subset) GetFallbackPolicy() Subset_LbSubsetFallbackPolicy

func (*Subset) GetListAsAny 

func (x *Subset) GetListAsAny() bool

func (*Subset) GetLocalityWeightAware 

func (x *Subset) GetLocalityWeightAware() bool

func (*Subset) GetMetadataFallbackPolicy 

func (x *Subset) GetMetadataFallbackPolicy() Subset_LbSubsetMetadataFallbackPolicy

func (*Subset) GetPanicModeAny 

func (x *Subset) GetPanicModeAny() bool

func (*Subset) GetScaleLocalityWeight 

func (x *Subset) GetScaleLocalityWeight() bool

func (*Subset) GetSubsetLbPolicy 

func (x *Subset) GetSubsetLbPolicy() *v3.LoadBalancingPolicy

func (*Subset) GetSubsetSelectors 

func (x *Subset) GetSubsetSelectors() []*Subset_LbSubsetSelector

func (*Subset) ProtoMessage 

func (*Subset) ProtoMessage()

func (*Subset) ProtoReflect 

func (x *Subset) ProtoReflect() protoreflect.Message

func (*Subset) Reset 

func (x *Subset) Reset()

func (*Subset) String 

func (x *Subset) String() string

type Subset_LbSubsetFallbackPolicy 

type Subset_LbSubsetFallbackPolicy int32

If NO_FALLBACK is selected, a result equivalent to no healthy hosts is reported. If ANY_ENDPOINT is selected, any cluster endpoint may be returned (subject to policy, health checks, etc). If DEFAULT_SUBSET is selected, load balancing is performed over the endpoints matching the values from the default_subset field. 

const (
	Subset_NO_FALLBACK    Subset_LbSubsetFallbackPolicy = 0
	Subset_ANY_ENDPOINT   Subset_LbSubsetFallbackPolicy = 1
	Subset_DEFAULT_SUBSET Subset_LbSubsetFallbackPolicy = 2
)

func (Subset_LbSubsetFallbackPolicy) Descriptor 

func (Subset_LbSubsetFallbackPolicy) Descriptor() protoreflect.EnumDescriptor

func (Subset_LbSubsetFallbackPolicy) Enum 

func (x Subset_LbSubsetFallbackPolicy) Enum() *Subset_LbSubsetFallbackPolicy

func (Subset_LbSubsetFallbackPolicy) EnumDescriptor deprecated 

func (Subset_LbSubsetFallbackPolicy) EnumDescriptor() ([]byte, []int)

Deprecated: Use Subset_LbSubsetFallbackPolicy.Descriptor instead.

func (Subset_LbSubsetFallbackPolicy) Number 

func (x Subset_LbSubsetFallbackPolicy) Number() protoreflect.EnumNumber

func (Subset_LbSubsetFallbackPolicy) String 

func (x Subset_LbSubsetFallbackPolicy) String() string

func (Subset_LbSubsetFallbackPolicy) Type 

func (Subset_LbSubsetFallbackPolicy) Type() protoreflect.EnumType

type Subset_LbSubsetMetadataFallbackPolicy 

type Subset_LbSubsetMetadataFallbackPolicy int32
const (
	// No fallback. Route metadata will be used as-is.
	Subset_METADATA_NO_FALLBACK Subset_LbSubsetMetadataFallbackPolicy = 0
	// A special metadata key “fallback_list“ will be used to provide variants of metadata to try.
	// Value of “fallback_list“ key has to be a list. Every list element has to be a struct - it will
	// be merged with route metadata, overriding keys that appear in both places.
	// “fallback_list“ entries will be used in order until a host is found.
	//
	// “fallback_list“ key itself is removed from metadata before subset load balancing is performed.
	//
	// Example:
	//
	// for metadata:
	//
	// .. code-block:: yaml
	//
	//	version: 1.0
	//	fallback_list:
	//	  - version: 2.0
	//	    hardware: c64
	//	  - hardware: c32
	//	  - version: 3.0
	//
	// at first, metadata:
	//
	// .. code-block:: json
	//
	//	{"version": "2.0", "hardware": "c64"}
	//
	// will be used for load balancing. If no host is found, metadata:
	//
	// .. code-block:: json
	//
	//	{"version": "1.0", "hardware": "c32"}
	//
	// is next to try. If it still results in no host, finally metadata:
	//
	// .. code-block:: json
	//
	//	{"version": "3.0"}
	//
	// is used.
	Subset_FALLBACK_LIST Subset_LbSubsetMetadataFallbackPolicy = 1
)

func (Subset_LbSubsetMetadataFallbackPolicy) Descriptor 

func (Subset_LbSubsetMetadataFallbackPolicy) Descriptor() protoreflect.EnumDescriptor

func (Subset_LbSubsetMetadataFallbackPolicy) Enum 

func (x Subset_LbSubsetMetadataFallbackPolicy) Enum() *Subset_LbSubsetMetadataFallbackPolicy

func (Subset_LbSubsetMetadataFallbackPolicy) EnumDescriptor deprecated 

func (Subset_LbSubsetMetadataFallbackPolicy) EnumDescriptor() ([]byte, []int)

Deprecated: Use Subset_LbSubsetMetadataFallbackPolicy.Descriptor instead.

func (Subset_LbSubsetMetadataFallbackPolicy) Number 

func (x Subset_LbSubsetMetadataFallbackPolicy) Number() protoreflect.EnumNumber

func (Subset_LbSubsetMetadataFallbackPolicy) String 

func (x Subset_LbSubsetMetadataFallbackPolicy) String() string

func (Subset_LbSubsetMetadataFallbackPolicy) Type 

func (Subset_LbSubsetMetadataFallbackPolicy) Type() protoreflect.EnumType

type Subset_LbSubsetSelector 

type Subset_LbSubsetSelector struct {

	// List of keys to match with the weighted cluster metadata.
	Keys []string `protobuf:"bytes,1,rep,name=keys,proto3" json:"keys,omitempty"`
	// Selects a mode of operation in which each subset has only one host. This mode uses the same rules for
	// choosing a host, but updating hosts is faster, especially for large numbers of hosts.
	//
	// If a match is found to a host, that host will be used regardless of priority levels.
	//
	// When this mode is enabled, configurations that contain more than one host with the same metadata value for the single key in “keys“
	// will use only one of the hosts with the given key; no requests will be routed to the others. The cluster gauge
	// :ref:`lb_subsets_single_host_per_subset_duplicate<config_cluster_manager_cluster_stats_subset_lb>` indicates how many duplicates are
	// present in the current configuration.
	SingleHostPerSubset bool `protobuf:"varint,4,opt,name=single_host_per_subset,json=singleHostPerSubset,proto3" json:"single_host_per_subset,omitempty"`
	// The behavior used when no endpoint subset matches the selected route's
	// metadata.
	FallbackPolicy Subset_LbSubsetSelector_LbSubsetSelectorFallbackPolicy `` /* 215-byte string literal not displayed */
	// Subset of
	// :ref:`keys<envoy_v3_api_field_extensions.load_balancing_policies.subset.v3.Subset.LbSubsetSelector.keys>` used by
	// :ref:`KEYS_SUBSET<envoy_v3_api_enum_value_extensions.load_balancing_policies.subset.v3.Subset.LbSubsetSelector.LbSubsetSelectorFallbackPolicy.KEYS_SUBSET>`
	// fallback policy.
	// It has to be a non empty list if KEYS_SUBSET fallback policy is selected.
	// For any other fallback policy the parameter is not used and should not be set.
	// Only values also present in
	// :ref:`keys<envoy_v3_api_field_extensions.load_balancing_policies.subset.v3.Subset.LbSubsetSelector.keys>` are allowed, but
	// “fallback_keys_subset“ cannot be equal to “keys“.
	FallbackKeysSubset []string `protobuf:"bytes,3,rep,name=fallback_keys_subset,json=fallbackKeysSubset,proto3" json:"fallback_keys_subset,omitempty"`
	// contains filtered or unexported fields
}

Specifications for subsets.

func (*Subset_LbSubsetSelector) Descriptor deprecated 

func (*Subset_LbSubsetSelector) Descriptor() ([]byte, []int)

Deprecated: Use Subset_LbSubsetSelector.ProtoReflect.Descriptor instead.

func (*Subset_LbSubsetSelector) GetFallbackKeysSubset 

func (x *Subset_LbSubsetSelector) GetFallbackKeysSubset() []string

func (*Subset_LbSubsetSelector) GetFallbackPolicy 

func (x *Subset_LbSubsetSelector) GetFallbackPolicy() Subset_LbSubsetSelector_LbSubsetSelectorFallbackPolicy

func (*Subset_LbSubsetSelector) GetKeys 

func (x *Subset_LbSubsetSelector) GetKeys() []string

func (*Subset_LbSubsetSelector) GetSingleHostPerSubset 

func (x *Subset_LbSubsetSelector) GetSingleHostPerSubset() bool

func (*Subset_LbSubsetSelector) ProtoMessage 

func (*Subset_LbSubsetSelector) ProtoMessage()

func (*Subset_LbSubsetSelector) ProtoReflect 

func (x *Subset_LbSubsetSelector) ProtoReflect() protoreflect.Message

func (*Subset_LbSubsetSelector) Reset 

func (x *Subset_LbSubsetSelector) Reset()

func (*Subset_LbSubsetSelector) String 

func (x *Subset_LbSubsetSelector) String() string

type Subset_LbSubsetSelector_LbSubsetSelectorFallbackPolicy 

type Subset_LbSubsetSelector_LbSubsetSelectorFallbackPolicy int32

Allows to override top level fallback policy per selector. 

const (
	// If NOT_DEFINED top level config fallback policy is used instead.
	Subset_LbSubsetSelector_NOT_DEFINED Subset_LbSubsetSelector_LbSubsetSelectorFallbackPolicy = 0
	// If NO_FALLBACK is selected, a result equivalent to no healthy hosts is reported.
	Subset_LbSubsetSelector_NO_FALLBACK Subset_LbSubsetSelector_LbSubsetSelectorFallbackPolicy = 1
	// If ANY_ENDPOINT is selected, any cluster endpoint may be returned
	// (subject to policy, health checks, etc).
	Subset_LbSubsetSelector_ANY_ENDPOINT Subset_LbSubsetSelector_LbSubsetSelectorFallbackPolicy = 2
	// If DEFAULT_SUBSET is selected, load balancing is performed over the
	// endpoints matching the values from the default_subset field.
	Subset_LbSubsetSelector_DEFAULT_SUBSET Subset_LbSubsetSelector_LbSubsetSelectorFallbackPolicy = 3
	// If KEYS_SUBSET is selected, subset selector matching is performed again with metadata
	// keys reduced to
	// :ref:`fallback_keys_subset<envoy_v3_api_field_extensions.load_balancing_policies.subset.v3.Subset.LbSubsetSelector.fallback_keys_subset>`.
	// It allows for a fallback to a different, less specific selector if some of the keys of
	// the selector are considered optional.
	Subset_LbSubsetSelector_KEYS_SUBSET Subset_LbSubsetSelector_LbSubsetSelectorFallbackPolicy = 4
)

func (Subset_LbSubsetSelector_LbSubsetSelectorFallbackPolicy) Descriptor 

func (Subset_LbSubsetSelector_LbSubsetSelectorFallbackPolicy) Descriptor() protoreflect.EnumDescriptor

func (Subset_LbSubsetSelector_LbSubsetSelectorFallbackPolicy) Enum 

func (x Subset_LbSubsetSelector_LbSubsetSelectorFallbackPolicy) Enum() *Subset_LbSubsetSelector_LbSubsetSelectorFallbackPolicy

func (Subset_LbSubsetSelector_LbSubsetSelectorFallbackPolicy) EnumDescriptor deprecated 

func (Subset_LbSubsetSelector_LbSubsetSelectorFallbackPolicy) EnumDescriptor() ([]byte, []int)

Deprecated: Use Subset_LbSubsetSelector_LbSubsetSelectorFallbackPolicy.Descriptor instead.

func (Subset_LbSubsetSelector_LbSubsetSelectorFallbackPolicy) Number 

func (x Subset_LbSubsetSelector_LbSubsetSelectorFallbackPolicy) Number() protoreflect.EnumNumber

func (Subset_LbSubsetSelector_LbSubsetSelectorFallbackPolicy) String 

func (x Subset_LbSubsetSelector_LbSubsetSelectorFallbackPolicy) String() string

func (Subset_LbSubsetSelector_LbSubsetSelectorFallbackPolicy) Type 

func (Subset_LbSubsetSelector_LbSubsetSelectorFallbackPolicy) Type() protoreflect.EnumType

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