tidb stat 源码
tidb stat 代码
文件路径：/ddl/stat.go
// Copyright 2015 PingCAP, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package ddl
import (
"github.com/pingcap/errors"
"github.com/pingcap/tidb/sessionctx/variable"
)
var (
serverID = "server_id"
ddlSchemaVersion = "ddl_schema_version"
ddlJobID = "ddl_job_id"
ddlJobAction = "ddl_job_action"
ddlJobStartTS = "ddl_job_start_ts"
ddlJobState = "ddl_job_state"
ddlJobError = "ddl_job_error"
ddlJobRows = "ddl_job_row_count"
ddlJobSchemaState = "ddl_job_schema_state"
ddlJobSchemaID = "ddl_job_schema_id"
ddlJobTableID = "ddl_job_table_id"
ddlJobSnapshotVer = "ddl_job_snapshot_ver"
ddlJobReorgHandle = "ddl_job_reorg_handle"
ddlJobArgs = "ddl_job_args"
)
// GetScope gets the status variables scope.
func (d *ddl) GetScope(status string) variable.ScopeFlag {
// Now ddl status variables scope are all default scope.
return variable.DefaultStatusVarScopeFlag
}
// Stats returns the DDL statistics.
func (d *ddl) Stats(vars *variable.SessionVars) (map[string]interface{}, error) {
m := make(map[string]interface{})
m[serverID] = d.uuid
var ddlInfo *Info
s, err := d.sessPool.get()
if err != nil {
return nil, errors.Trace(err)
}
defer d.sessPool.put(s)
ddlInfo, err = GetDDLInfoWithNewTxn(s)
if err != nil {
return nil, errors.Trace(err)
}
m[ddlSchemaVersion] = ddlInfo.SchemaVer
// TODO: Get the owner information.
if len(ddlInfo.Jobs) == 0 {
return m, nil
}
// TODO: Add all job information if needed.
job := ddlInfo.Jobs[0]
m[ddlJobID] = job.ID
m[ddlJobAction] = job.Type.String()
m[ddlJobStartTS] = job.StartTS / 1e9 // unit: second
m[ddlJobState] = job.State.String()
m[ddlJobRows] = job.RowCount
if job.Error == nil {
m[ddlJobError] = ""
} else {
m[ddlJobError] = job.Error.Error()
}
m[ddlJobSchemaState] = job.SchemaState.String()
m[ddlJobSchemaID] = job.SchemaID
m[ddlJobTableID] = job.TableID
m[ddlJobSnapshotVer] = job.SnapshotVer
m[ddlJobReorgHandle] = tryDecodeToHandleString(ddlInfo.ReorgHandle)
m[ddlJobArgs] = job.Args
return m, nil
}
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