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fda720b880
issue: #33285 - add two grpc resolver (by session and by streaming coord assignment service) - add one grpc balancer (by serverID and roundrobin) - add lazy conn to avoid block by first service discovery - add some utility function for streaming service Signed-off-by: chyezh <chyezh@outlook.com>
29 lines
988 B
Go
29 lines
988 B
Go
package balancer
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import (
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"context"
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"github.com/milvus-io/milvus/pkg/streaming/util/types"
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"github.com/milvus-io/milvus/pkg/util/typeutil"
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)
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var _ Balancer = (*balancerImpl)(nil)
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// Balancer is a load balancer to balance the load of log node.
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// Given the balance result to assign or remove channels to corresponding log node.
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// Balancer is a local component, it should promise all channel can be assigned, and reach the final consistency.
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// Balancer should be thread safe.
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type Balancer interface {
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// WatchChannelAssignments watches the balance result.
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WatchChannelAssignments(ctx context.Context, cb func(version typeutil.VersionInt64Pair, relations []types.PChannelInfoAssigned) error) error
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// MarkAsAvailable marks the pchannels as available, and trigger a rebalance.
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MarkAsUnavailable(ctx context.Context, pChannels []types.PChannelInfo) error
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// Trigger is a hint to trigger a balance.
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Trigger(ctx context.Context) error
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// Close close the balancer.
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Close()
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}
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