refactoring of internal/balancer

[asmyasnikov]

Pull request type

Please check the type of change your PR introduces:

• Bugfix
• Feature
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Documentation content changes
• Other (please describe):

What is the current behavior?

Issue Number: N/A

What is the new behavior?

Other information

[github-actions]

github.com/ydb-platform/ydb-go-sdk/v3/config

incompatible changes

(*Config).ConnectionTTL: removed

github.com/ydb-platform/ydb-go-sdk/v3/query

incompatible changes

Client.Stats: changed from func() *github.com/ydb-platform/ydb-go-sdk/v3/internal/pool/stats.Stats to func() *github.com/ydb-platform/ydb-go-sdk/v3/internal/pool.Stats
Stats: changed from func(Client) (*github.com/ydb-platform/ydb-go-sdk/v3/internal/pool/stats.Stats, error) to func(Client) (*github.com/ydb-platform/ydb-go-sdk/v3/internal/pool.Stats, error)

github.com/ydb-platform/ydb-go-sdk/v3/trace

incompatible changes

ConnState: removed
DriverConnAllowDoneInfo.State: changed from ConnState to google.golang.org/grpc/connectivity.State
DriverConnAllowStartInfo.State: changed from ConnState to google.golang.org/grpc/connectivity.State
DriverConnBanDoneInfo.State: changed from ConnState to google.golang.org/grpc/connectivity.State
DriverConnBanStartInfo.State: changed from ConnState to google.golang.org/grpc/connectivity.State
DriverConnInvokeDoneInfo.State: changed from ConnState to google.golang.org/grpc/connectivity.State
DriverConnNewStreamDoneInfo.State: changed from ConnState to google.golang.org/grpc/connectivity.State
DriverConnStateChangeDoneInfo.State: changed from ConnState to google.golang.org/grpc/connectivity.State
DriverConnStateChangeStartInfo.State: changed from ConnState to google.golang.org/grpc/connectivity.State
DriverOnConnAllow: changed from func(*Driver, *context.Context, call, EndpointInfo, ConnState) func(state ConnState) to func(*Driver, *context.Context, call, EndpointInfo, google.golang.org/grpc/connectivity.State) func(google.golang.org/grpc/connectivity.State)
DriverOnConnBan: changed from func(*Driver, *context.Context, call, EndpointInfo, ConnState, error) func(state ConnState) to func(*Driver, *context.Context, call, EndpointInfo, google.golang.org/grpc/connectivity.State, error) func(google.golang.org/grpc/connectivity.State)
DriverOnConnInvoke: changed from func(*Driver, *context.Context, call, EndpointInfo, Method) func(_ error, issues []Issue, opID string, state ConnState, metadata map[string][]string) to func(*Driver, *context.Context, call, EndpointInfo, Method) func(_ error, issues []Issue, opID string, _ google.golang.org/grpc/connectivity.State, metadata map[string][]string)
DriverOnConnNewStream: changed from func(*Driver, *context.Context, call, EndpointInfo, Method) func(_ error, state ConnState) to func(*Driver, *context.Context, call, EndpointInfo, Method) func(error, google.golang.org/grpc/connectivity.State)
DriverOnConnStateChange: changed from func(*Driver, *context.Context, call, EndpointInfo, ConnState) func(state ConnState) to func(*Driver, *context.Context, call, EndpointInfo, google.golang.org/grpc/connectivity.State) func(google.golang.org/grpc/connectivity.State)
Query.OnPoolGet: removed
Query.OnPoolPut: removed
QueryOnPoolChange: changed from func(*Query, int, int, int, int) to func(*Query, int, int, int)
QueryOnPoolGet: removed
QueryOnPoolPut: removed
QueryPoolChange.Index: removed
QueryPoolGetDoneInfo: removed
QueryPoolGetStartInfo: removed
QueryPoolPutDoneInfo: removed
QueryPoolPutStartInfo: removed

summary

Base version: v3.75.1-0.20240712184758-c83a350fb6b2 (master)
Cannot suggest a release version.
Can only suggest a release version when compared against the most recent version of this major: v3.75.0.

[github-actions]

🌋 Here are results of SLO test for Native ydb-go-sdk/v3 over table-service:

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[github-actions]

🌋 Here are results of SLO test for Go SDK xorm:

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[github-actions]

🌋 Here are results of SLO test for Go SDK gorm:

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[github-actions]

🌋 Here are results of SLO test for Go SDK database/sql:

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[github-actions]

🌋 Here are results of SLO test for Native ydb-go-sdk/v3 over query-service with session pool:

Grafana Dashboard

[github-actions]

🌋 Here are results of SLO test for Native ydb-go-sdk/v3 over query-service:

Grafana Dashboard