github.com/whtcorpsinc/MilevaDB-Prod@v0.0.0-20211104133533-f57f4be3b597/dbs/stat.go (about)

     1  // Copyright 2020 WHTCORPS INC, Inc.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // See the License for the specific language governing permissions and
    12  // limitations under the License.
    13  
    14  package dbs
    15  
    16  import (
    17  	"github.com/whtcorpsinc/errors"
    18  	"github.com/whtcorpsinc/milevadb/ekv"
    19  	"github.com/whtcorpsinc/milevadb/soliton/admin"
    20  	"github.com/whtcorpsinc/milevadb/stochastikctx/variable"
    21  )
    22  
    23  var (
    24  	serverID           = "server_id"
    25  	dbsSchemaVersion   = "dbs_schema_version"
    26  	dbsJobID           = "dbs_job_id"
    27  	dbsJobCausetAction = "dbs_job_action"
    28  	dbsJobStartTS      = "dbs_job_start_ts"
    29  	dbsJobState        = "dbs_job_state"
    30  	dbsJobError        = "dbs_job_error"
    31  	dbsJobRows         = "dbs_job_row_count"
    32  	dbsJobSchemaState  = "dbs_job_schema_state"
    33  	dbsJobSchemaID     = "dbs_job_schema_id"
    34  	dbsJobBlockID      = "dbs_job_block_id"
    35  	dbsJobSnapshotVer  = "dbs_job_snapshot_ver"
    36  	dbsJobReorgHandle  = "dbs_job_reorg_handle"
    37  	dbsJobArgs         = "dbs_job_args"
    38  )
    39  
    40  // GetScope gets the status variables scope.
    41  func (d *dbs) GetScope(status string) variable.ScopeFlag {
    42  	// Now dbs status variables scope are all default scope.
    43  	return variable.DefaultStatusVarScopeFlag
    44  }
    45  
    46  // Stats returns the DBS statistics.
    47  func (d *dbs) Stats(vars *variable.StochastikVars) (map[string]interface{}, error) {
    48  	m := make(map[string]interface{})
    49  	m[serverID] = d.uuid
    50  	var dbsInfo *admin.DBSInfo
    51  
    52  	err := ekv.RunInNewTxn(d.causetstore, false, func(txn ekv.Transaction) error {
    53  		var err1 error
    54  		dbsInfo, err1 = admin.GetDBSInfo(txn)
    55  		if err1 != nil {
    56  			return errors.Trace(err1)
    57  		}
    58  		return errors.Trace(err1)
    59  	})
    60  	if err != nil {
    61  		return nil, errors.Trace(err)
    62  	}
    63  
    64  	m[dbsSchemaVersion] = dbsInfo.SchemaVer
    65  	// TODO: Get the tenant information.
    66  	if len(dbsInfo.Jobs) == 0 {
    67  		return m, nil
    68  	}
    69  	// TODO: Add all job information if needed.
    70  	job := dbsInfo.Jobs[0]
    71  	m[dbsJobID] = job.ID
    72  	m[dbsJobCausetAction] = job.Type.String()
    73  	m[dbsJobStartTS] = job.StartTS / 1e9 // unit: second
    74  	m[dbsJobState] = job.State.String()
    75  	m[dbsJobRows] = job.RowCount
    76  	if job.Error == nil {
    77  		m[dbsJobError] = ""
    78  	} else {
    79  		m[dbsJobError] = job.Error.Error()
    80  	}
    81  	m[dbsJobSchemaState] = job.SchemaState.String()
    82  	m[dbsJobSchemaID] = job.SchemaID
    83  	m[dbsJobBlockID] = job.BlockID
    84  	m[dbsJobSnapshotVer] = job.SnapshotVer
    85  	m[dbsJobReorgHandle] = toString(dbsInfo.ReorgHandle)
    86  	m[dbsJobArgs] = job.Args
    87  	return m, nil
    88  }