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server,kvserver/rangelog: extract implementation of rangelog writer
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,19 @@ | ||
| load("//build/bazelutil/unused_checker:unused.bzl", "get_x_data") | ||
| load("@io_bazel_rules_go//go:def.bzl", "go_library") | ||
|
|
||
| go_library( | ||
| name = "rangelog", | ||
| srcs = ["rangelog.go"], | ||
| importpath = "github.com/cockroachdb/cockroach/pkg/kv/kvserver/rangelog", | ||
| visibility = ["//visibility:public"], | ||
| deps = [ | ||
| "//pkg/kv", | ||
| "//pkg/kv/kvserver/kvserverpb", | ||
| "//pkg/security/username", | ||
| "//pkg/sql/sessiondata", | ||
| "//pkg/sql/sqlutil", | ||
| "@com_github_cockroachdb_errors//:errors", | ||
| ], | ||
| ) | ||
|
|
||
| get_x_data(name = "get_x_data") |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,79 @@ | ||
| // Copyright 2022 The Cockroach Authors. | ||
| // | ||
| // Use of this software is governed by the Business Source License | ||
| // included in the file licenses/BSL.txt. | ||
| // | ||
| // As of the Change Date specified in that file, in accordance with | ||
| // the Business Source License, use of this software will be governed | ||
| // by the Apache License, Version 2.0, included in the file | ||
| // licenses/APL.txt. | ||
|
|
||
| // Package rangelog implements kvserver.RangeLogWriter | ||
| package rangelog | ||
|
|
||
| import ( | ||
| "context" | ||
| "encoding/json" | ||
|
|
||
| "github.com/cockroachdb/cockroach/pkg/kv" | ||
| "github.com/cockroachdb/cockroach/pkg/kv/kvserver/kvserverpb" | ||
| "github.com/cockroachdb/cockroach/pkg/security/username" | ||
| "github.com/cockroachdb/cockroach/pkg/sql/sessiondata" | ||
| "github.com/cockroachdb/cockroach/pkg/sql/sqlutil" | ||
| "github.com/cockroachdb/errors" | ||
| ) | ||
|
|
||
| // Writer implements kvserver.RangeLogWriter using the InternalExecutor. | ||
| type Writer struct { | ||
| ie sqlutil.InternalExecutor | ||
| } | ||
|
|
||
| // NewWriter returns a new Writer which implements kvserver.RangeLogWriter | ||
| // using the InternalExecutor. | ||
| func NewWriter(ie sqlutil.InternalExecutor) *Writer { | ||
| return &Writer{ie: ie} | ||
| } | ||
|
|
||
| // WriteRangeLogEvent implements kvserver.RangeLogWriter. It writes the event | ||
| // to the system.rangelog table in the provided transaction. | ||
| func (s *Writer) WriteRangeLogEvent( | ||
| ctx context.Context, txn *kv.Txn, event kvserverpb.RangeLogEvent, | ||
| ) error { | ||
| const insertEventTableStmt = ` | ||
| INSERT INTO system.rangelog ( | ||
| timestamp, "rangeID", "storeID", "eventType", "otherRangeID", info | ||
| ) | ||
| VALUES( | ||
| $1, $2, $3, $4, $5, $6 | ||
| ) | ||
| ` | ||
| args := []interface{}{ | ||
| event.Timestamp, | ||
| event.RangeID, | ||
| event.StoreID, | ||
| event.EventType.String(), | ||
| nil, // otherRangeID | ||
| nil, // info | ||
| } | ||
| if event.OtherRangeID != 0 { | ||
| args[4] = event.OtherRangeID | ||
| } | ||
| if event.Info != nil { | ||
| infoBytes, err := json.Marshal(*event.Info) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| args[5] = string(infoBytes) | ||
| } | ||
|
|
||
| rows, err := s.ie.ExecEx(ctx, "log-range-event", txn, | ||
| sessiondata.InternalExecutorOverride{User: username.RootUserName()}, | ||
| insertEventTableStmt, args...) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| if rows != 1 { | ||
| return errors.Errorf("%d rows affected by log insertion; expected exactly one row affected.", rows) | ||
| } | ||
| return nil | ||
| } |
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