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crdb_internal.go
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crdb_internal.go
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// Copyright 2017 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 sql
import (
"bytes"
"context"
"encoding/hex"
"fmt"
"net"
"net/url"
"sort"
"strconv"
"strings"
"time"
"github.com/cockroachdb/cockroach/pkg/base"
"github.com/cockroachdb/cockroach/pkg/build"
"github.com/cockroachdb/cockroach/pkg/clusterversion"
"github.com/cockroachdb/cockroach/pkg/config/zonepb"
"github.com/cockroachdb/cockroach/pkg/gossip"
"github.com/cockroachdb/cockroach/pkg/jobs"
"github.com/cockroachdb/cockroach/pkg/jobs/jobspb"
"github.com/cockroachdb/cockroach/pkg/keys"
"github.com/cockroachdb/cockroach/pkg/kv"
"github.com/cockroachdb/cockroach/pkg/kv/kvclient"
"github.com/cockroachdb/cockroach/pkg/kv/kvclient/kvcoord"
"github.com/cockroachdb/cockroach/pkg/kv/kvserver/concurrency/lock"
"github.com/cockroachdb/cockroach/pkg/kv/kvserver/liveness/livenesspb"
"github.com/cockroachdb/cockroach/pkg/roachpb"
"github.com/cockroachdb/cockroach/pkg/security/username"
"github.com/cockroachdb/cockroach/pkg/server/serverpb"
"github.com/cockroachdb/cockroach/pkg/server/status/statuspb"
"github.com/cockroachdb/cockroach/pkg/server/telemetry"
"github.com/cockroachdb/cockroach/pkg/settings"
"github.com/cockroachdb/cockroach/pkg/sql/catalog"
"github.com/cockroachdb/cockroach/pkg/sql/catalog/catpb"
"github.com/cockroachdb/cockroach/pkg/sql/catalog/catprivilege"
"github.com/cockroachdb/cockroach/pkg/sql/catalog/colinfo"
"github.com/cockroachdb/cockroach/pkg/sql/catalog/descpb"
"github.com/cockroachdb/cockroach/pkg/sql/catalog/multiregion"
"github.com/cockroachdb/cockroach/pkg/sql/catalog/nstree"
"github.com/cockroachdb/cockroach/pkg/sql/catalog/schemaexpr"
"github.com/cockroachdb/cockroach/pkg/sql/catalog/tabledesc"
"github.com/cockroachdb/cockroach/pkg/sql/clusterunique"
"github.com/cockroachdb/cockroach/pkg/sql/idxusage"
"github.com/cockroachdb/cockroach/pkg/sql/pgwire/pgcode"
"github.com/cockroachdb/cockroach/pkg/sql/pgwire/pgerror"
"github.com/cockroachdb/cockroach/pkg/sql/pgwire/pgnotice"
"github.com/cockroachdb/cockroach/pkg/sql/privilege"
"github.com/cockroachdb/cockroach/pkg/sql/roleoption"
"github.com/cockroachdb/cockroach/pkg/sql/rowenc"
"github.com/cockroachdb/cockroach/pkg/sql/rowinfra"
"github.com/cockroachdb/cockroach/pkg/sql/sem/builtins"
"github.com/cockroachdb/cockroach/pkg/sql/sem/builtins/builtinsregistry"
"github.com/cockroachdb/cockroach/pkg/sql/sem/catconstants"
"github.com/cockroachdb/cockroach/pkg/sql/sem/eval"
"github.com/cockroachdb/cockroach/pkg/sql/sem/tree"
"github.com/cockroachdb/cockroach/pkg/sql/sessiondata"
"github.com/cockroachdb/cockroach/pkg/sql/sqlliveness"
"github.com/cockroachdb/cockroach/pkg/sql/sqlstats"
"github.com/cockroachdb/cockroach/pkg/sql/sqlstats/persistedsqlstats"
"github.com/cockroachdb/cockroach/pkg/sql/sqlstats/persistedsqlstats/sqlstatsutil"
"github.com/cockroachdb/cockroach/pkg/sql/sqlstats/sslocal"
"github.com/cockroachdb/cockroach/pkg/sql/syntheticprivilege"
"github.com/cockroachdb/cockroach/pkg/sql/types"
"github.com/cockroachdb/cockroach/pkg/util/duration"
"github.com/cockroachdb/cockroach/pkg/util/errorutil"
"github.com/cockroachdb/cockroach/pkg/util/json"
"github.com/cockroachdb/cockroach/pkg/util/log"
"github.com/cockroachdb/cockroach/pkg/util/mon"
"github.com/cockroachdb/cockroach/pkg/util/protoutil"
"github.com/cockroachdb/cockroach/pkg/util/stop"
"github.com/cockroachdb/cockroach/pkg/util/timeutil"
"github.com/cockroachdb/cockroach/pkg/util/tracing"
"github.com/cockroachdb/cockroach/pkg/util/tracing/collector"
"github.com/cockroachdb/cockroach/pkg/util/tracing/tracingpb"
"github.com/cockroachdb/errors"
)
// CrdbInternalName is the name of the crdb_internal schema.
const CrdbInternalName = catconstants.CRDBInternalSchemaName
// Naming convention:
// - if the response is served from memory, prefix with node_
// - if the response is served via a kv request, prefix with kv_
// - if the response is not from kv requests but is cluster-wide (i.e. the
// answer isn't specific to the sql connection being used, prefix with cluster_.
//
// Adding something new here will require an update to `pkg/cli` for inclusion in
// a `debug zip`; the unit tests will guide you.
//
// Many existing tables don't follow the conventions above, but please apply
// them to future additions.
var crdbInternal = virtualSchema{
name: CrdbInternalName,
tableDefs: map[descpb.ID]virtualSchemaDef{
catconstants.CrdbInternalBackwardDependenciesTableID: crdbInternalBackwardDependenciesTable,
catconstants.CrdbInternalBuildInfoTableID: crdbInternalBuildInfoTable,
catconstants.CrdbInternalBuiltinFunctionsTableID: crdbInternalBuiltinFunctionsTable,
catconstants.CrdbInternalClusterContendedIndexesViewID: crdbInternalClusterContendedIndexesView,
catconstants.CrdbInternalClusterContendedKeysViewID: crdbInternalClusterContendedKeysView,
catconstants.CrdbInternalClusterContendedTablesViewID: crdbInternalClusterContendedTablesView,
catconstants.CrdbInternalClusterContentionEventsTableID: crdbInternalClusterContentionEventsTable,
catconstants.CrdbInternalClusterDistSQLFlowsTableID: crdbInternalClusterDistSQLFlowsTable,
catconstants.CrdbInternalClusterExecutionInsightsTableID: crdbInternalClusterExecutionInsightsTable,
catconstants.CrdbInternalClusterLocksTableID: crdbInternalClusterLocksTable,
catconstants.CrdbInternalClusterQueriesTableID: crdbInternalClusterQueriesTable,
catconstants.CrdbInternalClusterTransactionsTableID: crdbInternalClusterTxnsTable,
catconstants.CrdbInternalClusterSessionsTableID: crdbInternalClusterSessionsTable,
catconstants.CrdbInternalClusterSettingsTableID: crdbInternalClusterSettingsTable,
catconstants.CrdbInternalClusterStmtStatsTableID: crdbInternalClusterStmtStatsTable,
catconstants.CrdbInternalCreateFunctionStmtsTableID: crdbInternalCreateFunctionStmtsTable,
catconstants.CrdbInternalCreateSchemaStmtsTableID: crdbInternalCreateSchemaStmtsTable,
catconstants.CrdbInternalCreateStmtsTableID: crdbInternalCreateStmtsTable,
catconstants.CrdbInternalCreateTypeStmtsTableID: crdbInternalCreateTypeStmtsTable,
catconstants.CrdbInternalDatabasesTableID: crdbInternalDatabasesTable,
catconstants.CrdbInternalSuperRegions: crdbInternalSuperRegions,
catconstants.CrdbInternalFeatureUsageID: crdbInternalFeatureUsage,
catconstants.CrdbInternalForwardDependenciesTableID: crdbInternalForwardDependenciesTable,
catconstants.CrdbInternalGossipNodesTableID: crdbInternalGossipNodesTable,
catconstants.CrdbInternalKVNodeLivenessTableID: crdbInternalKVNodeLivenessTable,
catconstants.CrdbInternalGossipAlertsTableID: crdbInternalGossipAlertsTable,
catconstants.CrdbInternalGossipLivenessTableID: crdbInternalGossipLivenessTable,
catconstants.CrdbInternalGossipNetworkTableID: crdbInternalGossipNetworkTable,
catconstants.CrdbInternalTransactionContentionEvents: crdbInternalTransactionContentionEventsTable,
catconstants.CrdbInternalIndexColumnsTableID: crdbInternalIndexColumnsTable,
catconstants.CrdbInternalIndexUsageStatisticsTableID: crdbInternalIndexUsageStatistics,
catconstants.CrdbInternalInflightTraceSpanTableID: crdbInternalInflightTraceSpanTable,
catconstants.CrdbInternalJobsTableID: crdbInternalJobsTable,
catconstants.CrdbInternalKVNodeStatusTableID: crdbInternalKVNodeStatusTable,
catconstants.CrdbInternalKVStoreStatusTableID: crdbInternalKVStoreStatusTable,
catconstants.CrdbInternalLeasesTableID: crdbInternalLeasesTable,
catconstants.CrdbInternalLocalContentionEventsTableID: crdbInternalLocalContentionEventsTable,
catconstants.CrdbInternalLocalDistSQLFlowsTableID: crdbInternalLocalDistSQLFlowsTable,
catconstants.CrdbInternalLocalQueriesTableID: crdbInternalLocalQueriesTable,
catconstants.CrdbInternalLocalTransactionsTableID: crdbInternalLocalTxnsTable,
catconstants.CrdbInternalLocalSessionsTableID: crdbInternalLocalSessionsTable,
catconstants.CrdbInternalLocalMetricsTableID: crdbInternalLocalMetricsTable,
catconstants.CrdbInternalNodeExecutionInsightsTableID: crdbInternalNodeExecutionInsightsTable,
catconstants.CrdbInternalNodeStmtStatsTableID: crdbInternalNodeStmtStatsTable,
catconstants.CrdbInternalNodeTxnStatsTableID: crdbInternalNodeTxnStatsTable,
catconstants.CrdbInternalPartitionsTableID: crdbInternalPartitionsTable,
catconstants.CrdbInternalPredefinedCommentsTableID: crdbInternalPredefinedCommentsTable,
catconstants.CrdbInternalRangesNoLeasesTableID: crdbInternalRangesNoLeasesTable,
catconstants.CrdbInternalRangesViewID: crdbInternalRangesView,
catconstants.CrdbInternalRuntimeInfoTableID: crdbInternalRuntimeInfoTable,
catconstants.CrdbInternalSchemaChangesTableID: crdbInternalSchemaChangesTable,
catconstants.CrdbInternalSessionTraceTableID: crdbInternalSessionTraceTable,
catconstants.CrdbInternalSessionVariablesTableID: crdbInternalSessionVariablesTable,
catconstants.CrdbInternalStmtStatsTableID: crdbInternalStmtStatsView,
catconstants.CrdbInternalStmtStatsV22_1TableID: crdbInternalStmtStatsViewV22_1,
catconstants.CrdbInternalTableColumnsTableID: crdbInternalTableColumnsTable,
catconstants.CrdbInternalTableIndexesTableID: crdbInternalTableIndexesTable,
catconstants.CrdbInternalTablesTableLastStatsID: crdbInternalTablesTableLastStats,
catconstants.CrdbInternalTablesTableID: crdbInternalTablesTable,
catconstants.CrdbInternalClusterTxnStatsTableID: crdbInternalClusterTxnStatsTable,
catconstants.CrdbInternalTxnStatsTableID: crdbInternalTxnStatsView,
catconstants.CrdbInternalTransactionStatsTableID: crdbInternalTransactionStatisticsTable,
catconstants.CrdbInternalZonesTableID: crdbInternalZonesTable,
catconstants.CrdbInternalInvalidDescriptorsTableID: crdbInternalInvalidDescriptorsTable,
catconstants.CrdbInternalClusterDatabasePrivilegesTableID: crdbInternalClusterDatabasePrivilegesTable,
catconstants.CrdbInternalCrossDbRefrences: crdbInternalCrossDbReferences,
catconstants.CrdbInternalLostTableDescriptors: crdbLostTableDescriptors,
catconstants.CrdbInternalClusterInflightTracesTable: crdbInternalClusterInflightTracesTable,
catconstants.CrdbInternalRegionsTable: crdbInternalRegionsTable,
catconstants.CrdbInternalDefaultPrivilegesTable: crdbInternalDefaultPrivilegesTable,
catconstants.CrdbInternalActiveRangeFeedsTable: crdbInternalActiveRangeFeedsTable,
catconstants.CrdbInternalTenantUsageDetailsViewID: crdbInternalTenantUsageDetailsView,
catconstants.CrdbInternalPgCatalogTableIsImplementedTableID: crdbInternalPgCatalogTableIsImplementedTable,
},
validWithNoDatabaseContext: true,
}
var crdbInternalBuildInfoTable = virtualSchemaTable{
comment: `detailed identification strings (RAM, local node only)`,
schema: `
CREATE TABLE crdb_internal.node_build_info (
node_id INT NOT NULL,
field STRING NOT NULL,
value STRING NOT NULL
)`,
populate: func(_ context.Context, p *planner, _ catalog.DatabaseDescriptor, addRow func(...tree.Datum) error) error {
execCfg := p.ExecCfg()
nodeID, _ := execCfg.NodeInfo.NodeID.OptionalNodeID() // zero if not available
info := build.GetInfo()
for k, v := range map[string]string{
"Name": "CockroachDB",
"ClusterID": execCfg.NodeInfo.LogicalClusterID().String(),
"Organization": execCfg.Organization(),
"Build": info.Short(),
"Version": info.Tag,
"Channel": info.Channel,
} {
if err := addRow(
tree.NewDInt(tree.DInt(nodeID)),
tree.NewDString(k),
tree.NewDString(v),
); err != nil {
return err
}
}
return nil
},
}
var crdbInternalRuntimeInfoTable = virtualSchemaTable{
comment: `server parameters, useful to construct connection URLs (RAM, local node only)`,
schema: `
CREATE TABLE crdb_internal.node_runtime_info (
node_id INT NOT NULL,
component STRING NOT NULL,
field STRING NOT NULL,
value STRING NOT NULL
)`,
populate: func(ctx context.Context, p *planner, _ catalog.DatabaseDescriptor, addRow func(...tree.Datum) error) error {
if err := p.RequireAdminRole(ctx, "access the node runtime information"); err != nil {
return err
}
node := p.ExecCfg().NodeInfo
nodeID, _ := node.NodeID.OptionalNodeID() // zero if not available
dbURL, err := node.PGURL(url.User(username.RootUser))
if err != nil {
return err
}
for _, item := range []struct {
component string
url *url.URL
}{
{"DB", dbURL.ToPQ()}, {"UI", node.AdminURL()},
} {
var user string
if item.url.User != nil {
user = item.url.User.String()
}
host, port, err := net.SplitHostPort(item.url.Host)
if err != nil {
return err
}
for _, kv := range [][2]string{
{"URL", item.url.String()},
{"Scheme", item.url.Scheme},
{"User", user},
{"Host", host},
{"Port", port},
{"URI", item.url.RequestURI()},
} {
k, v := kv[0], kv[1]
if err := addRow(
tree.NewDInt(tree.DInt(nodeID)),
tree.NewDString(item.component),
tree.NewDString(k),
tree.NewDString(v),
); err != nil {
return err
}
}
}
return nil
},
}
var crdbInternalDatabasesTable = virtualSchemaTable{
comment: `databases accessible by the current user (KV scan)`,
schema: `
CREATE TABLE crdb_internal.databases (
id INT NOT NULL,
name STRING NOT NULL,
owner NAME NOT NULL,
primary_region STRING,
secondary_region STRING,
regions STRING[],
survival_goal STRING,
placement_policy STRING,
create_statement STRING NOT NULL
)`,
populate: func(ctx context.Context, p *planner, _ catalog.DatabaseDescriptor, addRow func(...tree.Datum) error) error {
return forEachDatabaseDesc(ctx, p, nil /* all databases */, true, /* requiresPrivileges */
func(db catalog.DatabaseDescriptor) error {
var survivalGoal tree.Datum = tree.DNull
var primaryRegion tree.Datum = tree.DNull
var secondaryRegion tree.Datum = tree.DNull
var placement tree.Datum = tree.DNull
regions := tree.NewDArray(types.String)
createNode := tree.CreateDatabase{}
createNode.ConnectionLimit = -1
createNode.Name = tree.Name(db.GetName())
if db.IsMultiRegion() {
primaryRegion = tree.NewDString(string(db.GetRegionConfig().PrimaryRegion))
createNode.PrimaryRegion = tree.Name(db.GetRegionConfig().PrimaryRegion)
secondaryRegion = tree.NewDString(string(db.GetRegionConfig().SecondaryRegion))
createNode.SecondaryRegion = tree.Name(db.GetRegionConfig().SecondaryRegion)
regionConfig, err := SynthesizeRegionConfig(ctx, p.txn, db.GetID(), p.Descriptors())
if err != nil {
return err
}
createNode.Regions = make(tree.NameList, len(regionConfig.Regions()))
for i, region := range regionConfig.Regions() {
if err := regions.Append(tree.NewDString(string(region))); err != nil {
return err
}
createNode.Regions[i] = tree.Name(region)
}
if db.GetRegionConfig().Placement == descpb.DataPlacement_RESTRICTED {
placement = tree.NewDString("restricted")
createNode.Placement = tree.DataPlacementRestricted
} else {
placement = tree.NewDString("default")
// We can't differentiate between a database that was created with
// unspecified and default, and we don't want to expose PLACEMENT
// unless we know the user wants to use PLACEMENT. Therefore, we
// only add a PLACEMENT clause if the database was configured with
// restricted placement.
createNode.Placement = tree.DataPlacementUnspecified
}
createNode.SurvivalGoal = tree.SurvivalGoalDefault
switch db.GetRegionConfig().SurvivalGoal {
case descpb.SurvivalGoal_ZONE_FAILURE:
survivalGoal = tree.NewDString("zone")
createNode.SurvivalGoal = tree.SurvivalGoalZoneFailure
case descpb.SurvivalGoal_REGION_FAILURE:
survivalGoal = tree.NewDString("region")
createNode.SurvivalGoal = tree.SurvivalGoalRegionFailure
default:
return errors.Newf("unknown survival goal: %d", db.GetRegionConfig().SurvivalGoal)
}
}
owner, err := getOwnerOfPrivilegeObject(ctx, p, db)
if err != nil {
return err
}
return addRow(
tree.NewDInt(tree.DInt(db.GetID())), // id
tree.NewDString(db.GetName()), // name
tree.NewDName(owner.Normalized()), // owner
primaryRegion, // primary_region
secondaryRegion, // secondary_region
regions, // regions
survivalGoal, // survival_goal
placement, // data_placement
tree.NewDString(createNode.String()), // create_statement
)
})
},
}
var crdbInternalSuperRegions = virtualSchemaTable{
comment: `list super regions of databases visible to the current user`,
schema: `
CREATE TABLE crdb_internal.super_regions (
id INT NOT NULL,
database_name STRING NOT NULL,
super_region_name STRING NOT NULL,
regions STRING[]
)`,
populate: func(ctx context.Context, p *planner, _ catalog.DatabaseDescriptor, addRow func(...tree.Datum) error) error {
return forEachDatabaseDesc(ctx, p, nil /* all databases */, true, /* requiresPrivileges */
func(db catalog.DatabaseDescriptor) error {
if !db.IsMultiRegion() {
return nil
}
typeID, err := db.MultiRegionEnumID()
if err != nil {
return err
}
typeDesc, err := p.Descriptors().GetImmutableTypeByID(ctx, p.txn, typeID,
tree.ObjectLookupFlags{CommonLookupFlags: tree.CommonLookupFlags{
Required: true,
}},
)
if err != nil {
return err
}
superRegions, err := typeDesc.SuperRegions()
if err != nil {
return err
}
for _, superRegion := range superRegions {
regionList := tree.NewDArray(types.String)
for _, region := range superRegion.Regions {
if err := regionList.Append(tree.NewDString(region.String())); err != nil {
return err
}
}
if err := addRow(
tree.NewDInt(tree.DInt(db.GetID())), // id
tree.NewDString(db.GetName()), // database_name
tree.NewDString(superRegion.SuperRegionName), // super_region_name
regionList, // regions
); err != nil {
return err
}
}
return nil
})
},
}
func makeCrdbInternalTablesAddRowFn(
p *planner, pusher func(...tree.Datum) error,
) func(table catalog.TableDescriptor, dbName tree.Datum, scName string) error {
row := make(tree.Datums, 14)
return func(table catalog.TableDescriptor, dbName tree.Datum, scName string) (err error) {
dropTimeDatum := tree.DNull
if dropTime := table.GetDropTime(); dropTime != 0 {
dropTimeDatum, err = tree.MakeDTimestamp(
timeutil.Unix(0, dropTime), time.Nanosecond,
)
if err != nil {
return err
}
}
locality := tree.DNull
if c := table.GetLocalityConfig(); c != nil {
f := p.EvalContext().FmtCtx(tree.FmtSimple)
if err := multiregion.FormatTableLocalityConfig(c, f); err != nil {
return err
}
locality = tree.NewDString(f.String())
}
row = row[:0]
row = append(row,
tree.NewDInt(tree.DInt(int64(table.GetID()))),
tree.NewDInt(tree.DInt(int64(table.GetParentID()))),
tree.NewDString(table.GetName()),
dbName,
tree.NewDInt(tree.DInt(int64(table.GetVersion()))),
eval.TimestampToInexactDTimestamp(table.GetModificationTime()),
eval.TimestampToDecimalDatum(table.GetModificationTime()),
tree.NewDString(table.GetFormatVersion().String()),
tree.NewDString(table.GetState().String()),
tree.DNull, // sc_lease_node_id is deprecated
tree.DNull, // sc_lease_expiration_time is deprecated
dropTimeDatum,
tree.NewDString(table.GetAuditMode().String()),
tree.NewDString(scName),
tree.NewDInt(tree.DInt(int64(table.GetParentSchemaID()))),
locality,
)
return pusher(row...)
}
}
// TODO(tbg): prefix with kv_.
var crdbInternalTablesTable = virtualSchemaTable{
comment: `table descriptors accessible by current user, including non-public and virtual (KV scan; expensive!)`,
schema: `
CREATE TABLE crdb_internal.tables (
table_id INT8 NOT NULL,
parent_id INT8 NOT NULL,
name STRING NOT NULL,
database_name STRING,
version INT8 NOT NULL,
mod_time TIMESTAMP NOT NULL,
mod_time_logical DECIMAL NOT NULL,
format_version STRING NOT NULL,
state STRING NOT NULL,
sc_lease_node_id INT8,
sc_lease_expiration_time TIMESTAMP,
drop_time TIMESTAMP,
audit_mode STRING NOT NULL,
schema_name STRING NOT NULL,
parent_schema_id INT8 NOT NULL,
locality STRING,
INDEX (parent_id) WHERE drop_time IS NULL,
INDEX (database_name) WHERE drop_time IS NULL
);`,
indexes: []virtualIndex{
{
// INDEX(parent_id) WHERE drop_time IS NULL
populate: func(ctx context.Context, unwrappedConstraint tree.Datum, p *planner, _ catalog.DatabaseDescriptor, addRow func(...tree.Datum) error) (matched bool, err error) {
dbID := descpb.ID(tree.MustBeDInt(unwrappedConstraint))
flags := p.CommonLookupFlagsRequired()
flags.Required = false
flags.IncludeOffline = true
ok, db, err := p.Descriptors().GetImmutableDatabaseByID(ctx, p.Txn(), dbID, flags)
if !ok || err != nil {
return false, err
}
return crdbInternalTablesDatabaseLookupFunc(ctx, p, db, addRow)
},
},
{
// INDEX(database_name) WHERE drop_time IS NULL
populate: func(ctx context.Context, unwrappedConstraint tree.Datum, p *planner, _ catalog.DatabaseDescriptor, addRow func(...tree.Datum) error) (matched bool, err error) {
dbName := string(tree.MustBeDString(unwrappedConstraint))
flags := p.CommonLookupFlagsRequired()
flags.Required = false
flags.IncludeOffline = true
db, err := p.Descriptors().GetImmutableDatabaseByName(ctx, p.Txn(), dbName, flags)
if db == nil || err != nil {
return false, err
}
return crdbInternalTablesDatabaseLookupFunc(ctx, p, db, addRow)
},
},
},
populate: func(ctx context.Context, p *planner, db catalog.DatabaseDescriptor, addRow func(...tree.Datum) error) error {
all, err := p.Descriptors().GetAllDescriptors(ctx, p.txn)
if err != nil {
return err
}
descs := all.OrderedDescriptors()
dbNames := make(map[descpb.ID]string)
scNames := make(map[descpb.ID]string)
// TODO(richardjcai): Remove this case for keys.PublicSchemaID in 22.2.
scNames[keys.PublicSchemaID] = catconstants.PublicSchemaName
// Record database descriptors for name lookups.
for _, desc := range descs {
if dbDesc, ok := desc.(catalog.DatabaseDescriptor); ok {
dbNames[dbDesc.GetID()] = dbDesc.GetName()
}
if scDesc, ok := desc.(catalog.SchemaDescriptor); ok {
scNames[scDesc.GetID()] = scDesc.GetName()
}
}
addDesc := makeCrdbInternalTablesAddRowFn(p, addRow)
// Note: we do not use forEachTableDesc() here because we want to
// include added and dropped descriptors.
for _, desc := range descs {
table, ok := desc.(catalog.TableDescriptor)
if !ok || p.CheckAnyPrivilege(ctx, table) != nil {
continue
}
dbName := dbNames[table.GetParentID()]
if dbName == "" {
// The parent database was deleted. This is possible e.g. when
// a database is dropped with CASCADE, and someone queries
// this virtual table before the dropped table descriptors are
// effectively deleted.
dbName = fmt.Sprintf("[%d]", table.GetParentID())
}
schemaName := scNames[table.GetParentSchemaID()]
if schemaName == "" {
// The parent schema was deleted, possibly due to reasons mentioned above.
schemaName = fmt.Sprintf("[%d]", table.GetParentSchemaID())
}
if err := addDesc(table, tree.NewDString(dbName), schemaName); err != nil {
return err
}
}
// Also add all the virtual descriptors.
vt := p.getVirtualTabler()
vSchemas := vt.getSchemas()
for _, virtSchemaName := range vt.getSchemaNames() {
e := vSchemas[virtSchemaName]
for _, tName := range e.orderedDefNames {
vTableEntry := e.defs[tName]
if err := addDesc(vTableEntry.desc, tree.DNull, virtSchemaName); err != nil {
return err
}
}
}
return nil
},
}
func crdbInternalTablesDatabaseLookupFunc(
ctx context.Context, p *planner, db catalog.DatabaseDescriptor, addRow func(...tree.Datum) error,
) (bool, error) {
var descs nstree.Catalog
var err error
if useIndexLookupForDescriptorsInDatabase.Get(&p.EvalContext().Settings.SV) {
descs, err = p.Descriptors().GetAllDescriptorsForDatabase(ctx, p.Txn(), db)
} else {
descs, err = p.Descriptors().GetAllDescriptors(ctx, p.Txn())
}
if err != nil {
return false, err
}
scNames := make(map[descpb.ID]string)
// TODO(richardjcai): Remove this case for keys.PublicSchemaID in 22.2.
scNames[keys.PublicSchemaID] = catconstants.PublicSchemaName
// Record database descriptors for name lookups.
dbID := db.GetID()
_ = descs.ForEachDescriptorEntry(func(desc catalog.Descriptor) error {
if desc.GetParentID() != dbID {
return nil
}
if scDesc, ok := desc.(catalog.SchemaDescriptor); ok {
scNames[scDesc.GetID()] = scDesc.GetName()
}
return nil
})
rf := makeCrdbInternalTablesAddRowFn(p, addRow)
var seenAny bool
if err := descs.ForEachDescriptorEntry(func(desc catalog.Descriptor) error {
if desc.GetParentID() != dbID {
return nil
}
table, ok := desc.(catalog.TableDescriptor)
if !ok || p.CheckAnyPrivilege(ctx, table) != nil {
return nil
}
seenAny = true
schemaName := scNames[table.GetParentSchemaID()]
if schemaName == "" {
// The parent schema was deleted, possibly due to reasons mentioned above.
schemaName = fmt.Sprintf("[%d]", table.GetParentSchemaID())
}
return rf(table, tree.NewDString(db.GetName()), schemaName)
}); err != nil {
return false, err
}
return seenAny, nil
}
var crdbInternalPgCatalogTableIsImplementedTable = virtualSchemaTable{
comment: `table descriptors accessible by current user, including non-public and virtual (KV scan; expensive!)`,
schema: `
CREATE TABLE crdb_internal.pg_catalog_table_is_implemented (
name STRING NOT NULL,
implemented BOOL
)`,
generator: func(ctx context.Context, p *planner, dbDesc catalog.DatabaseDescriptor, stopper *stop.Stopper) (virtualTableGenerator, cleanupFunc, error) {
row := make(tree.Datums, 14)
worker := func(ctx context.Context, pusher rowPusher) error {
addDesc := func(table *virtualDefEntry, dbName tree.Datum, scName string) error {
tableDesc := table.desc
row = row[:0]
row = append(row,
tree.NewDString(tableDesc.GetName()),
tree.MakeDBool(tree.DBool(table.unimplemented)),
)
return pusher.pushRow(row...)
}
vt := p.getVirtualTabler()
vSchemas := vt.getSchemas()
e := vSchemas["pg_catalog"]
for _, tName := range e.orderedDefNames {
vTableEntry := e.defs[tName]
if err := addDesc(vTableEntry, tree.DNull, "pg_catalog"); err != nil {
return err
}
}
return nil
}
return setupGenerator(ctx, worker, stopper)
},
}
// statsAsOfTimeClusterMode controls the cluster setting for the duration which
// is used to define the AS OF time for querying the system.table_statistics
// table when building crdb_internal.table_row_statistics.
var statsAsOfTimeClusterMode = settings.RegisterDurationSetting(
settings.TenantWritable,
"sql.crdb_internal.table_row_statistics.as_of_time",
"historical query time used to build the crdb_internal.table_row_statistics table",
-10*time.Second,
)
var crdbInternalTablesTableLastStats = virtualSchemaTable{
comment: "stats for all tables accessible by current user in current database as of 10s ago",
schema: `
CREATE TABLE crdb_internal.table_row_statistics (
table_id INT NOT NULL,
table_name STRING NOT NULL,
estimated_row_count INT
)`,
populate: func(ctx context.Context, p *planner, db catalog.DatabaseDescriptor, addRow func(...tree.Datum) error) error {
// Collect the statistics for all tables AS OF 10 seconds ago to avoid
// contention on the stats table. We pass a nil transaction so that the AS
// OF clause can be independent of any outer query.
query := fmt.Sprintf(`
SELECT s."tableID", max(s."rowCount")
FROM system.table_statistics AS s
JOIN (
SELECT "tableID", max("createdAt") AS last_dt
FROM system.table_statistics
GROUP BY "tableID"
) AS l ON l."tableID" = s."tableID" AND l.last_dt = s."createdAt"
AS OF SYSTEM TIME '%s'
GROUP BY s."tableID"`, statsAsOfTimeClusterMode.String(&p.ExecCfg().Settings.SV))
statRows, err := p.ExtendedEvalContext().ExecCfg.InternalExecutor.QueryBufferedEx(
ctx, "crdb-internal-statistics-table", nil,
sessiondata.InternalExecutorOverride{User: username.RootUserName()},
query)
if err != nil {
// This query is likely to cause errors due to SHOW TABLES being run less
// than 10 seconds after cluster startup (10s is the default AS OF time
// for the query), causing the error "descriptor not found". We should
// tolerate this error and return nil.
if errors.Is(err, catalog.ErrDescriptorNotFound) {
return nil
}
return err
}
// Convert statistics into map: tableID -> rowCount.
statMap := make(map[tree.DInt]tree.Datum, len(statRows))
for _, r := range statRows {
statMap[tree.MustBeDInt(r[0])] = r[1]
}
// Walk over all available tables and show row count for each of them
// using collected statistics.
return forEachTableDescAll(ctx, p, db, virtualMany,
func(db catalog.DatabaseDescriptor, _ string, table catalog.TableDescriptor) error {
tableID := tree.DInt(table.GetID())
rowCount := tree.DNull
// For Virtual Tables report NULL row count.
if !table.IsVirtualTable() {
rowCount = tree.NewDInt(0)
if cnt, ok := statMap[tableID]; ok {
rowCount = cnt
}
}
return addRow(
tree.NewDInt(tableID),
tree.NewDString(table.GetName()),
rowCount,
)
},
)
},
}
// TODO(tbg): prefix with kv_.
var crdbInternalSchemaChangesTable = virtualSchemaTable{
comment: `ongoing schema changes, across all descriptors accessible by current user (KV scan; expensive!)`,
schema: `
CREATE TABLE crdb_internal.schema_changes (
table_id INT NOT NULL,
parent_id INT NOT NULL,
name STRING NOT NULL,
type STRING NOT NULL,
target_id INT,
target_name STRING,
state STRING NOT NULL,
direction STRING NOT NULL
)`,
populate: func(ctx context.Context, p *planner, _ catalog.DatabaseDescriptor, addRow func(...tree.Datum) error) error {
all, err := p.Descriptors().GetAllDescriptors(ctx, p.txn)
if err != nil {
return err
}
descs := all.OrderedDescriptors()
// Note: we do not use forEachTableDesc() here because we want to
// include added and dropped descriptors.
for _, desc := range descs {
table, ok := desc.(catalog.TableDescriptor)
if !ok || p.CheckAnyPrivilege(ctx, table) != nil {
continue
}
tableID := tree.NewDInt(tree.DInt(int64(table.GetID())))
parentID := tree.NewDInt(tree.DInt(int64(table.GetParentID())))
tableName := tree.NewDString(table.GetName())
for _, mut := range table.TableDesc().Mutations {
mutType := "UNKNOWN"
targetID := tree.DNull
targetName := tree.DNull
switch d := mut.Descriptor_.(type) {
case *descpb.DescriptorMutation_Column:
mutType = "COLUMN"
targetID = tree.NewDInt(tree.DInt(int64(d.Column.ID)))
targetName = tree.NewDString(d.Column.Name)
case *descpb.DescriptorMutation_Index:
mutType = "INDEX"
targetID = tree.NewDInt(tree.DInt(int64(d.Index.ID)))
targetName = tree.NewDString(d.Index.Name)
case *descpb.DescriptorMutation_Constraint:
mutType = "CONSTRAINT VALIDATION"
targetName = tree.NewDString(d.Constraint.Name)
}
if err := addRow(
tableID,
parentID,
tableName,
tree.NewDString(mutType),
targetID,
targetName,
tree.NewDString(mut.State.String()),
tree.NewDString(mut.Direction.String()),
); err != nil {
return err
}
}
}
return nil
},
}
// TODO(tbg): prefix with node_.
var crdbInternalLeasesTable = virtualSchemaTable{
comment: `acquired table leases (RAM; local node only)`,
schema: `
CREATE TABLE crdb_internal.leases (
node_id INT NOT NULL,
table_id INT NOT NULL,
name STRING NOT NULL,
parent_id INT NOT NULL,
expiration TIMESTAMP NOT NULL,
deleted BOOL NOT NULL
)`,
populate: func(
ctx context.Context, p *planner, _ catalog.DatabaseDescriptor, addRow func(...tree.Datum) error,
) (err error) {
nodeID, _ := p.execCfg.NodeInfo.NodeID.OptionalNodeID() // zero if not available
p.LeaseMgr().VisitLeases(func(desc catalog.Descriptor, takenOffline bool, _ int, expiration tree.DTimestamp) (wantMore bool) {
if p.CheckAnyPrivilege(ctx, desc) != nil {
// TODO(ajwerner): inspect what type of error got returned.
return true
}
err = addRow(
tree.NewDInt(tree.DInt(nodeID)),
tree.NewDInt(tree.DInt(int64(desc.GetID()))),
tree.NewDString(desc.GetName()),
tree.NewDInt(tree.DInt(int64(desc.GetParentID()))),
&expiration,
tree.MakeDBool(tree.DBool(takenOffline)),
)
return err == nil
})
return err
},
}
func tsOrNull(micros int64) (tree.Datum, error) {
if micros == 0 {
return tree.DNull, nil
}
ts := timeutil.Unix(0, micros*time.Microsecond.Nanoseconds())
return tree.MakeDTimestamp(ts, time.Microsecond)
}
// TODO(tbg): prefix with kv_.
var crdbInternalJobsTable = virtualSchemaTable{
schema: `
CREATE TABLE crdb_internal.jobs (
job_id INT,
job_type STRING,
description STRING,
statement STRING,
user_name STRING,
descriptor_ids INT[],
status STRING,
running_status STRING,
created TIMESTAMP,
started TIMESTAMP,
finished TIMESTAMP,
modified TIMESTAMP,
fraction_completed FLOAT,
high_water_timestamp DECIMAL,
error STRING,
coordinator_id INT,
trace_id INT,
last_run TIMESTAMP,
next_run TIMESTAMP,
num_runs INT,
execution_errors STRING[],
execution_events JSONB
)`,
comment: `decoded job metadata from system.jobs (KV scan)`,
generator: func(ctx context.Context, p *planner, _ catalog.DatabaseDescriptor, _ *stop.Stopper) (virtualTableGenerator, cleanupFunc, error) {
currentUser := p.SessionData().User()
isAdmin, err := p.HasAdminRole(ctx)
if err != nil {
return nil, nil, err
}
hasControlJob, err := p.HasRoleOption(ctx, roleoption.CONTROLJOB)
if err != nil {
return nil, nil, err
}
// Beware: we're querying system.jobs as root; we need to be careful to filter
// out results that the current user is not able to see.
const (
qSelect = `SELECT id, status, created, payload, progress, claim_session_id, claim_instance_id`
qFrom = ` FROM system.jobs`
backoffArgs = `(SELECT $1::FLOAT AS initial_delay, $2::FLOAT AS max_delay) args`
queryWithBackoff = qSelect + `, last_run, COALESCE(num_runs, 0), ` + jobs.NextRunClause + ` as next_run` + qFrom + ", " + backoffArgs
)
it, err := p.ExtendedEvalContext().ExecCfg.InternalExecutor.QueryIteratorEx(
ctx, "crdb-internal-jobs-table", p.txn,
sessiondata.InternalExecutorOverride{User: username.RootUserName()},
queryWithBackoff, p.execCfg.JobRegistry.RetryInitialDelay(), p.execCfg.JobRegistry.RetryMaxDelay())
if err != nil {
return nil, nil, err
}
cleanup := func(ctx context.Context) {
if err := it.Close(); err != nil {
// TODO(yuzefovich): this error should be propagated further up
// and not simply being logged. Fix it (#61123).
//
// Doing that as a return parameter would require changes to
// `planNode.Close` signature which is a bit annoying. One other
// possible solution is to panic here and catch the error
// somewhere.
log.Warningf(ctx, "error closing an iterator: %v", err)
}
}
// We'll reuse this container on each loop.
container := make(tree.Datums, 0, 21)
sessionJobs := make([]*jobs.Record, 0, len(p.extendedEvalCtx.SchemaChangeJobRecords))
uniqueJobs := make(map[*jobs.Record]struct{})
for _, job := range p.extendedEvalCtx.SchemaChangeJobRecords {
if _, ok := uniqueJobs[job]; ok {
continue
}
sessionJobs = append(sessionJobs, job)
uniqueJobs[job] = struct{}{}
}
return func() (datums tree.Datums, e error) {
// Loop while we need to skip a row.
for {
ok, err := it.Next(ctx)
if err != nil {
return nil, err
}
var id, status, created, payloadBytes, progressBytes, sessionIDBytes,
instanceID tree.Datum
lastRun, nextRun, numRuns := tree.DNull, tree.DNull, tree.DNull
if ok {
r := it.Cur()
id, status, created, payloadBytes, progressBytes, sessionIDBytes, instanceID =
r[0], r[1], r[2], r[3], r[4], r[5], r[6]
lastRun, numRuns, nextRun = r[7], r[8], r[9]
} else if !ok {
if len(sessionJobs) == 0 {
return nil, nil
}
job := sessionJobs[len(sessionJobs)-1]
sessionJobs = sessionJobs[:len(sessionJobs)-1]
// Convert the job into datums, where protobufs will be intentionally,
// marshalled.
id = tree.NewDInt(tree.DInt(job.JobID))
status = tree.NewDString(string(jobs.StatusPending))
created = eval.TimestampToInexactDTimestamp(p.txn.ReadTimestamp())
progressBytes, payloadBytes, err = getPayloadAndProgressFromJobsRecord(p, job)
if err != nil {
return nil, err
}
sessionIDBytes = tree.NewDBytes(tree.DBytes(p.extendedEvalCtx.SessionID.GetBytes()))
instanceID = tree.NewDInt(tree.DInt(p.extendedEvalCtx.ExecCfg.JobRegistry.ID()))
}
var jobType, description, statement, user, descriptorIDs, started, runningStatus,
finished, modified, fractionCompleted, highWaterTimestamp, errorStr, coordinatorID,
traceID, executionErrors, executionEvents = tree.DNull, tree.DNull, tree.DNull,
tree.DNull, tree.DNull, tree.DNull, tree.DNull, tree.DNull, tree.DNull, tree.DNull,
tree.DNull, tree.DNull, tree.DNull, tree.DNull, tree.DNull, tree.DNull
// Extract data from the payload.
payload, err := jobs.UnmarshalPayload(payloadBytes)
// We filter out masked rows before we allocate all the
// datums. Needless allocate when not necessary.
ownedByAdmin := false
var sqlUsername username.SQLUsername
if payload != nil {
sqlUsername = payload.UsernameProto.Decode()
ownedByAdmin, err = p.UserHasAdminRole(ctx, sqlUsername)
if err != nil {
errorStr = tree.NewDString(fmt.Sprintf("error decoding payload: %v", err))
}
}
if sessionID, ok := sessionIDBytes.(*tree.DBytes); ok {
if isAlive, err := p.EvalContext().SQLLivenessReader.IsAlive(
ctx, sqlliveness.SessionID(*sessionID),
); err != nil {
// Silently swallow the error for checking for liveness.
} else if instanceID, ok := instanceID.(*tree.DInt); ok && isAlive {
coordinatorID = instanceID
}
}
sameUser := payload != nil && sqlUsername == currentUser
// The user can access the row if the meet one of the conditions:
// 1. The user is an admin.
// 2. The job is owned by the user.
// 3. The user has CONTROLJOB privilege and the job is not owned by