open-consul/agent/consul/state/schema.go

462 lines
11 KiB
Go

package state
import (
"fmt"
"github.com/hashicorp/go-memdb"
)
// schemaFn is an interface function used to create and return
// new memdb schema structs for constructing an in-memory db.
type schemaFn func() *memdb.TableSchema
// stateStoreSchema is used to return the combined schema for
// the state store.
func stateStoreSchema() *memdb.DBSchema {
// Create the root DB schema
db := &memdb.DBSchema{
Tables: make(map[string]*memdb.TableSchema),
}
// Collect the needed schemas
schemas := []schemaFn{
indexTableSchema,
nodesTableSchema,
servicesTableSchema,
checksTableSchema,
kvsTableSchema,
tombstonesTableSchema,
sessionsTableSchema,
sessionChecksTableSchema,
aclsTableSchema,
coordinatesTableSchema,
preparedQueriesTableSchema,
autopilotConfigTableSchema,
}
// Add the tables to the root schema
for _, fn := range schemas {
schema := fn()
if _, ok := db.Tables[schema.Name]; ok {
panic(fmt.Sprintf("duplicate table name: %s", schema.Name))
}
db.Tables[schema.Name] = schema
}
return db
}
// indexTableSchema returns a new table schema used for
// tracking various indexes for the Raft log.
func indexTableSchema() *memdb.TableSchema {
return &memdb.TableSchema{
Name: "index",
Indexes: map[string]*memdb.IndexSchema{
"id": &memdb.IndexSchema{
Name: "id",
AllowMissing: false,
Unique: true,
Indexer: &memdb.StringFieldIndex{
Field: "Key",
Lowercase: true,
},
},
},
}
}
// nodesTableSchema returns a new table schema used for
// storing node information.
func nodesTableSchema() *memdb.TableSchema {
return &memdb.TableSchema{
Name: "nodes",
Indexes: map[string]*memdb.IndexSchema{
"id": &memdb.IndexSchema{
Name: "id",
AllowMissing: false,
Unique: true,
Indexer: &memdb.StringFieldIndex{
Field: "Node",
Lowercase: true,
},
},
"uuid": &memdb.IndexSchema{
Name: "uuid",
AllowMissing: true,
Unique: true,
Indexer: &memdb.UUIDFieldIndex{
Field: "ID",
},
},
"meta": &memdb.IndexSchema{
Name: "meta",
AllowMissing: true,
Unique: false,
Indexer: &memdb.StringMapFieldIndex{
Field: "Meta",
Lowercase: false,
},
},
},
}
}
// servicesTableSchema returns a new TableSchema used to
// store information about services.
func servicesTableSchema() *memdb.TableSchema {
return &memdb.TableSchema{
Name: "services",
Indexes: map[string]*memdb.IndexSchema{
"id": &memdb.IndexSchema{
Name: "id",
AllowMissing: false,
Unique: true,
Indexer: &memdb.CompoundIndex{
Indexes: []memdb.Indexer{
&memdb.StringFieldIndex{
Field: "Node",
Lowercase: true,
},
&memdb.StringFieldIndex{
Field: "ServiceID",
Lowercase: true,
},
},
},
},
"node": &memdb.IndexSchema{
Name: "node",
AllowMissing: false,
Unique: false,
Indexer: &memdb.StringFieldIndex{
Field: "Node",
Lowercase: true,
},
},
"service": &memdb.IndexSchema{
Name: "service",
AllowMissing: true,
Unique: false,
Indexer: &memdb.StringFieldIndex{
Field: "ServiceName",
Lowercase: true,
},
},
},
}
}
// checksTableSchema returns a new table schema used for
// storing and indexing health check information. Health
// checks have a number of different attributes we want to
// filter by, so this table is a bit more complex.
func checksTableSchema() *memdb.TableSchema {
return &memdb.TableSchema{
Name: "checks",
Indexes: map[string]*memdb.IndexSchema{
"id": &memdb.IndexSchema{
Name: "id",
AllowMissing: false,
Unique: true,
Indexer: &memdb.CompoundIndex{
Indexes: []memdb.Indexer{
&memdb.StringFieldIndex{
Field: "Node",
Lowercase: true,
},
&memdb.StringFieldIndex{
Field: "CheckID",
Lowercase: true,
},
},
},
},
"status": &memdb.IndexSchema{
Name: "status",
AllowMissing: false,
Unique: false,
Indexer: &memdb.StringFieldIndex{
Field: "Status",
Lowercase: false,
},
},
"service": &memdb.IndexSchema{
Name: "service",
AllowMissing: true,
Unique: false,
Indexer: &memdb.StringFieldIndex{
Field: "ServiceName",
Lowercase: true,
},
},
"node": &memdb.IndexSchema{
Name: "node",
AllowMissing: true,
Unique: false,
Indexer: &memdb.StringFieldIndex{
Field: "Node",
Lowercase: true,
},
},
"node_service_check": &memdb.IndexSchema{
Name: "node_service_check",
AllowMissing: true,
Unique: false,
Indexer: &memdb.CompoundIndex{
Indexes: []memdb.Indexer{
&memdb.StringFieldIndex{
Field: "Node",
Lowercase: true,
},
&memdb.FieldSetIndex{
Field: "ServiceID",
},
},
},
},
"node_service": &memdb.IndexSchema{
Name: "node_service",
AllowMissing: true,
Unique: false,
Indexer: &memdb.CompoundIndex{
Indexes: []memdb.Indexer{
&memdb.StringFieldIndex{
Field: "Node",
Lowercase: true,
},
&memdb.StringFieldIndex{
Field: "ServiceID",
Lowercase: true,
},
},
},
},
},
}
}
// kvsTableSchema returns a new table schema used for storing
// key/value data from consul's kv store.
func kvsTableSchema() *memdb.TableSchema {
return &memdb.TableSchema{
Name: "kvs",
Indexes: map[string]*memdb.IndexSchema{
"id": &memdb.IndexSchema{
Name: "id",
AllowMissing: false,
Unique: true,
Indexer: &memdb.StringFieldIndex{
Field: "Key",
Lowercase: false,
},
},
"session": &memdb.IndexSchema{
Name: "session",
AllowMissing: true,
Unique: false,
Indexer: &memdb.UUIDFieldIndex{
Field: "Session",
},
},
},
}
}
// tombstonesTableSchema returns a new table schema used for
// storing tombstones during KV delete operations to prevent
// the index from sliding backwards.
func tombstonesTableSchema() *memdb.TableSchema {
return &memdb.TableSchema{
Name: "tombstones",
Indexes: map[string]*memdb.IndexSchema{
"id": &memdb.IndexSchema{
Name: "id",
AllowMissing: false,
Unique: true,
Indexer: &memdb.StringFieldIndex{
Field: "Key",
Lowercase: false,
},
},
},
}
}
// sessionsTableSchema returns a new TableSchema used for
// storing session information.
func sessionsTableSchema() *memdb.TableSchema {
return &memdb.TableSchema{
Name: "sessions",
Indexes: map[string]*memdb.IndexSchema{
"id": &memdb.IndexSchema{
Name: "id",
AllowMissing: false,
Unique: true,
Indexer: &memdb.UUIDFieldIndex{
Field: "ID",
},
},
"node": &memdb.IndexSchema{
Name: "node",
AllowMissing: false,
Unique: false,
Indexer: &memdb.StringFieldIndex{
Field: "Node",
Lowercase: true,
},
},
},
}
}
// sessionChecksTableSchema returns a new table schema used
// for storing session checks.
func sessionChecksTableSchema() *memdb.TableSchema {
return &memdb.TableSchema{
Name: "session_checks",
Indexes: map[string]*memdb.IndexSchema{
"id": &memdb.IndexSchema{
Name: "id",
AllowMissing: false,
Unique: true,
Indexer: &memdb.CompoundIndex{
Indexes: []memdb.Indexer{
&memdb.StringFieldIndex{
Field: "Node",
Lowercase: true,
},
&memdb.StringFieldIndex{
Field: "CheckID",
Lowercase: true,
},
&memdb.UUIDFieldIndex{
Field: "Session",
},
},
},
},
"node_check": &memdb.IndexSchema{
Name: "node_check",
AllowMissing: false,
Unique: false,
Indexer: &memdb.CompoundIndex{
Indexes: []memdb.Indexer{
&memdb.StringFieldIndex{
Field: "Node",
Lowercase: true,
},
&memdb.StringFieldIndex{
Field: "CheckID",
Lowercase: true,
},
},
},
},
"session": &memdb.IndexSchema{
Name: "session",
AllowMissing: false,
Unique: false,
Indexer: &memdb.UUIDFieldIndex{
Field: "Session",
},
},
},
}
}
// aclsTableSchema returns a new table schema used for
// storing ACL information.
func aclsTableSchema() *memdb.TableSchema {
return &memdb.TableSchema{
Name: "acls",
Indexes: map[string]*memdb.IndexSchema{
"id": &memdb.IndexSchema{
Name: "id",
AllowMissing: false,
Unique: true,
Indexer: &memdb.StringFieldIndex{
Field: "ID",
Lowercase: false,
},
},
},
}
}
// coordinatesTableSchema returns a new table schema used for storing
// network coordinates.
func coordinatesTableSchema() *memdb.TableSchema {
return &memdb.TableSchema{
Name: "coordinates",
Indexes: map[string]*memdb.IndexSchema{
"id": &memdb.IndexSchema{
Name: "id",
AllowMissing: false,
Unique: true,
Indexer: &memdb.StringFieldIndex{
Field: "Node",
Lowercase: true,
},
},
},
}
}
// preparedQueriesTableSchema returns a new table schema used for storing
// prepared queries.
func preparedQueriesTableSchema() *memdb.TableSchema {
return &memdb.TableSchema{
Name: "prepared-queries",
Indexes: map[string]*memdb.IndexSchema{
"id": &memdb.IndexSchema{
Name: "id",
AllowMissing: false,
Unique: true,
Indexer: &memdb.UUIDFieldIndex{
Field: "ID",
},
},
"name": &memdb.IndexSchema{
Name: "name",
AllowMissing: true,
Unique: true,
Indexer: &memdb.StringFieldIndex{
Field: "Name",
Lowercase: true,
},
},
"template": &memdb.IndexSchema{
Name: "template",
AllowMissing: true,
Unique: true,
Indexer: &PreparedQueryIndex{},
},
"session": &memdb.IndexSchema{
Name: "session",
AllowMissing: true,
Unique: false,
Indexer: &memdb.UUIDFieldIndex{
Field: "Session",
},
},
},
}
}
// autopilotConfigTableSchema returns a new table schema used for storing
// the autopilot configuration
func autopilotConfigTableSchema() *memdb.TableSchema {
return &memdb.TableSchema{
Name: "autopilot-config",
Indexes: map[string]*memdb.IndexSchema{
"id": &memdb.IndexSchema{
Name: "id",
AllowMissing: true,
Unique: true,
Indexer: &memdb.ConditionalIndex{
Conditional: func(obj interface{}) (bool, error) { return true, nil },
},
},
},
}
}