open-consul/agent/consul/state/config_entry_schema.go
Derek Menteer 5d17b2c90b
Add sameness-group configuration entry. (#16608)
This commit adds a sameness-group config entry to the API and structs packages. It includes some validation logic and a new memdb index that tracks the default sameness-group for each partition. Sameness groups will simplify the effort of managing failovers / intentions / exports for peers and partitions.

Note that this change purely to introduce the configuration entry and does not include the full functionality of sameness-groups.
2023-03-13 16:19:11 -05:00

110 lines
3.3 KiB
Go

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"
indexSamenessGroupDefault = "sameness-group-default"
)
// 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{},
},
indexSamenessGroupDefault: {
Name: indexSamenessGroupDefault,
AllowMissing: true,
Unique: true,
Indexer: &SamenessGroupDefaultIndex{},
},
},
}
}
// 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.SamenessGroupConfigEntry)(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
}