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40 lines
794 B
40 lines
794 B
2 years ago
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package selector
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import (
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"context"
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"git.diulo.com/mogfee/kit/errors"
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"google.golang.org/grpc/balancer"
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)
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var ErrNoAvailable = errors.ServiceUnavailable("no_available_node", "")
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type Selector interface {
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Rebalancer
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Select(ctx context.Context, opts ...SelectOption) (selected WeightedNode, di DoneFunc, err error)
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}
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type Rebalancer interface {
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Apply(nodes []Node)
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}
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type Builder interface {
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Build() Selector
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}
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type Node interface {
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Scheme() string
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Address() string
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ServerName() string
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InitialWeight() *int64
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Version() string
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Metadata() map[string]string
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}
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type DoneInfo struct {
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Err error
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ReplyMD ReplyMD
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BytesSent bool
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BytesReceived bool
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}
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type ReplyMD interface {
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Get(key string) string
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}
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type DoneFunc func(ctx context.Context, di balancer.DoneInfo)
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