Documentation
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Overview ¶
Package pglogical contains support for reading a PostgreSQL logical replication feed.
Index ¶
Constants ¶
This section is empty.
Variables ¶
var Set = wire.NewSet( ProvideConn, ProvideEagerConfig, )
Set is used by Wire.
Functions ¶
This section is empty.
Types ¶
type Config ¶
type Config struct { DLQ dlq.Config Script script.Config Sequencer sequencer.Config Staging sinkprod.StagingConfig Target sinkprod.TargetConfig // The name of the publication to attach to. Publication string // The replication slot to attach to. Slot string // How ofter to report progress to the source database. StandbyTimeout time.Duration // Connection string for the source db. SourceConn string // The SQL schema in the target cluster to write into. This value is // optional if a userscript dispatch function is present. TargetSchema ident.Schema // Enable support for toasted columns ToastedColumns bool }
Config contains the configuration necessary for creating a replication connection. All field, other than TestControls, are mandatory unless explicitly indicated.
type Conn ¶
type Conn struct {
// contains filtered or unexported fields
}
A Conn encapsulates all wire-connection behavior. It is responsible for receiving replication messages and replying with status updates.
func ProvideConn ¶
func ProvideConn( ctx *stopper.Context, acc *apply.Acceptor, chaos *chaos.Chaos, config *Config, imm *immediate.Immediate, memo types.Memo, scriptSeq *script.Sequencer, stagingPool *types.StagingPool, targetPool *types.TargetPool, watchers types.Watchers, ) (*Conn, error)
ProvideConn is called by Wire to construct a connection to the source database. This provider will perform some pre-flight tests on the source database to ensure that replication has been configured. There's a fake dependency on the script loader so that flags can be evaluated first.
type EagerConfig ¶
type EagerConfig Config
EagerConfig is a hack to get Wire to move userscript evaluation to the beginning of the injector. This allows CLI flags to be set by the script.
func ProvideEagerConfig ¶
func ProvideEagerConfig(cfg *Config, _ *scriptRT.Loader) (*EagerConfig, error)
ProvideEagerConfig is a hack to move up the evaluation of the user script so that the options callbacks can set any non-script-related CLI flags. The configuration will be preflighted.
type PGLogical ¶
type PGLogical struct { Conn *Conn Diagnostics *diag.Diagnostics Memo types.Memo // Support testing. }
PGLogical is a PostgreSQL logical replication loop.
func (*PGLogical) GetDiagnostics ¶
func (l *PGLogical) GetDiagnostics() *diag.Diagnostics
GetDiagnostics implements stdlogical.HasDiagnostics.