48 lines
1.4 KiB
Go
48 lines
1.4 KiB
Go
package cluster
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import (
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"context"
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"go.unistack.org/micro/v4/metadata"
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)
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// Message sent to member in cluster
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type Message interface {
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// Header returns message headers
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Header() metadata.Metadata
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// Body returns broker message may be []byte slice or some go struct or interface
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Body() interface{}
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}
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type Node interface {
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// Name returns node name
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Name() string
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// Address returns node address
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Address() string
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// Metadata returns node metadata
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Metadata() metadata.Metadata
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}
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// Cluster interface used for cluster communication across nodes
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type Cluster interface {
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// Join is used to take an existing members and performing state sync
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Join(ctx context.Context, addr ...string) error
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// Leave broadcast a leave message and stop listeners
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Leave(ctx context.Context) error
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// Ping is used to probe live status of the node
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Ping(ctx context.Context, node Node, payload []byte) error
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// Members returns the cluster members
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Members() ([]Node, error)
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// Broadcast send message for all members in cluster, if filter is not nil, nodes may be filtered
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// by key/value pairs
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Broadcast(ctx context.Context, msg Message, filter ...string) error
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// Unicast send message to single member in cluster
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Unicast(ctx context.Context, node Node, msg Message) error
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// Live returns cluster liveness
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Live() bool
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// Ready returns cluster readiness
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Ready() bool
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// Health returns cluster health
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Health() bool
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}
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