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

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package state
import (
"strings"
"github.com/hashicorp/go-memdb"
"github.com/hashicorp/consul/agent/structs"
)
const (
tableConfigEntries = "config-entries"
indexLink = "link"
indexIntentionLegacyID = "intention-legacy-id"
indexSource = "intention-source"
)
// configTableSchema returns a new table schema used to store global
// config entries.
func configTableSchema() *memdb.TableSchema {
return &memdb.TableSchema{
Name: tableConfigEntries,
Indexes: map[string]*memdb.IndexSchema{
indexID: {
Name: indexID,
AllowMissing: false,
Unique: true,
Indexer: indexerSingleWithPrefix[any, structs.ConfigEntry, any]{
readIndex: indexFromConfigEntryKindName,
writeIndex: indexFromConfigEntry,
prefixIndex: indexFromConfigEntryKindName,
},
},
indexLink: {
Name: indexLink,
AllowMissing: true,
Unique: false,
Indexer: &ConfigEntryLinkIndex{},
},
indexIntentionLegacyID: {
Name: indexIntentionLegacyID,
AllowMissing: true,
Unique: true,
Indexer: &ServiceIntentionLegacyIDIndex{},
},
indexSource: {
Name: indexSource,
AllowMissing: true,
Unique: false,
Indexer: &ServiceIntentionSourceIndex{},
},
},
}
}
// configEntryIndexable is required because while structs.ConfigEntry
// has a GetEnterpriseMeta method, it does not directly expose the
// required NamespaceOrDefault and PartitionOrDefault methods of
// enterpriseIndexable.
//
// Config entries that embed *acl.EnterpriseMeta will automatically
// implement this interface.
type configEntryIndexable interface {
structs.ConfigEntry
enterpriseIndexable
}
var _ configEntryIndexable = (*structs.ExportedServicesConfigEntry)(nil)
var _ configEntryIndexable = (*structs.IngressGatewayConfigEntry)(nil)
var _ configEntryIndexable = (*structs.MeshConfigEntry)(nil)
var _ configEntryIndexable = (*structs.ProxyConfigEntry)(nil)
var _ configEntryIndexable = (*structs.ServiceConfigEntry)(nil)
var _ configEntryIndexable = (*structs.ServiceIntentionsConfigEntry)(nil)
var _ configEntryIndexable = (*structs.ServiceResolverConfigEntry)(nil)
var _ configEntryIndexable = (*structs.ServiceRouterConfigEntry)(nil)
var _ configEntryIndexable = (*structs.ServiceSplitterConfigEntry)(nil)
var _ configEntryIndexable = (*structs.TerminatingGatewayConfigEntry)(nil)
func indexFromConfigEntry(c structs.ConfigEntry) ([]byte, error) {
if c.GetName() == "" || c.GetKind() == "" {
return nil, errMissingValueForIndex
}
var b indexBuilder
b.String(strings.ToLower(c.GetKind()))
b.String(strings.ToLower(c.GetName()))
return b.Bytes(), nil
}
// indexKindFromConfigEntry indexes kinds without a namespace for any config
// entries that span all namespaces.
func indexKindFromConfigEntry(c configEntryIndexable) ([]byte, error) {
if c.GetKind() == "" {
return nil, errMissingValueForIndex
}
var b indexBuilder
b.String(strings.ToLower(c.GetKind()))
return b.Bytes(), nil
}