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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>
63 lines
1.9 KiB
Go
63 lines
1.9 KiB
Go
package attributes
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import (
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"google.golang.org/grpc/attributes"
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"github.com/milvus-io/milvus/internal/util/sessionutil"
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"github.com/milvus-io/milvus/pkg/streaming/util/types"
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)
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type attributesKeyType int
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const (
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serverIDKey attributesKeyType = iota
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channelAssignmentInfoKey
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sessionKey
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)
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type Attributes = attributes.Attributes
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// GetServerID returns the serverID in the given Attributes.
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func GetServerID(attr *Attributes) *int64 {
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val := attr.Value(serverIDKey)
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if val == nil {
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return nil
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}
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serverID := val.(int64)
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return &serverID
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}
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// WithServerID returns a new Attributes containing the given serverID.
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func WithServerID(attr *Attributes, serverID int64) *Attributes {
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return attr.WithValue(serverIDKey, serverID)
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}
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// WithChannelAssignmentInfo returns a new Attributes containing the given channelInfo.
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func WithChannelAssignmentInfo(attr *Attributes, assignment *types.StreamingNodeAssignment) *attributes.Attributes {
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return attr.WithValue(channelAssignmentInfoKey, assignment).WithValue(serverIDKey, assignment.NodeInfo.ServerID)
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}
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// GetChannelAssignmentInfoFromAttributes get the channel info fetched from streamingcoord.
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// Generated by the channel assignment discoverer and sent to channel assignment balancer.
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func GetChannelAssignmentInfoFromAttributes(attrs *Attributes) *types.StreamingNodeAssignment {
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val := attrs.Value(channelAssignmentInfoKey)
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if val == nil {
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return nil
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}
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return val.(*types.StreamingNodeAssignment)
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}
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// WithSession returns a new Attributes containing the given session.
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func WithSession(attr *Attributes, val *sessionutil.SessionRaw) *attributes.Attributes {
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return attr.WithValue(sessionKey, val).WithValue(serverIDKey, val.ServerID)
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}
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// GetSessionFromAttributes get session from attributes.
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func GetSessionFromAttributes(attrs *Attributes) *sessionutil.SessionRaw {
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val := attrs.Value(sessionKey)
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if val == nil {
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return nil
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}
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return val.(*sessionutil.SessionRaw)
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}
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