postgres

Documentation

Overview

Package postgres contains an implementation of the storage.Backend backed by postgres.

Index

• func ParseConfig(dsn string) (*pgxpool.Config, error)
• type Backend
  • func New(dsn string, options ...Option) *Backend
  • func (backend *Backend) Close() error
  • func (backend *Backend) Get(ctx context.Context, recordType, recordID string) (*databroker.Record, error)
  • func (backend *Backend) GetOptions(ctx context.Context, recordType string) (*databroker.Options, error)
  • func (backend *Backend) Lease(ctx context.Context, leaseName, leaseID string, ttl time.Duration) (acquired bool, err error)
  • func (backend *Backend) Put(ctx context.Context, records []*databroker.Record) (serverVersion uint64, err error)
  • func (backend *Backend) RegistryServer() registry.RegistryServer
  • func (backend *Backend) SetOptions(ctx context.Context, recordType string, options *databroker.Options) error
  • func (backend *Backend) Sync(ctx context.Context, recordType string, serverVersion, recordVersion uint64) (storage.RecordStream, error)
  • func (backend *Backend) SyncLatest(ctx context.Context, recordType string, expr storage.FilterExpression) (serverVersion, recordVersion uint64, stream storage.RecordStream, err error)
• type Option
  • func WithExpiry(expiry time.Duration) Option
  • func WithRegistryTTL(ttl time.Duration) Option

Functions

func ParseConfig

func ParseConfig(dsn string) (*pgxpool.Config, error)

ParseConfig parses a DSN into a pgxpool.Config.

Types

type Backend

type Backend struct {
	// contains filtered or unexported fields
}

Backend is a storage Backend implemented with Postgres.

func New

func New(dsn string, options ...Option) *Backend

New creates a new Backend.

func (*Backend) Close

func (backend *Backend) Close() error

Close closes the underlying database connection.

func (*Backend) Get

func (backend *Backend) Get(
	ctx context.Context,
	recordType, recordID string,
) (*databroker.Record, error)

Get gets a record from the database.

func (*Backend) GetOptions

func (backend *Backend) GetOptions(
	ctx context.Context,
	recordType string,
) (*databroker.Options, error)

GetOptions returns the options for the given record type.

func (*Backend) Lease

func (backend *Backend) Lease(
	ctx context.Context,
	leaseName, leaseID string,
	ttl time.Duration,
) (acquired bool, err error)

Lease attempts to acquire a lease for the given name.

func (*Backend) Put

func (backend *Backend) Put(
	ctx context.Context,
	records []*databroker.Record,
) (serverVersion uint64, err error)

Put puts a record into Postgres.

func (*Backend) RegistryServer

func (backend *Backend) RegistryServer() registry.RegistryServer

RegistryServer returns a registry.RegistryServer for the backend.

func (*Backend) SetOptions

func (backend *Backend) SetOptions(
	ctx context.Context,
	recordType string,
	options *databroker.Options,
) error

SetOptions sets the options for the given record type.

func (*Backend) Sync

func (backend *Backend) Sync(
	ctx context.Context,
	recordType string,
	serverVersion, recordVersion uint64,
) (storage.RecordStream, error)

Sync syncs the records.

func (*Backend) SyncLatest

func (backend *Backend) SyncLatest(
	ctx context.Context,
	recordType string,
	expr storage.FilterExpression,
) (serverVersion, recordVersion uint64, stream storage.RecordStream, err error)

SyncLatest syncs the latest version of each record.

type Option

type Option func(*config)

Option customizes a Backend.

func WithExpiry

func WithExpiry(expiry time.Duration) Option

WithExpiry sets the expiry for changes.

func WithRegistryTTL

func WithRegistryTTL(ttl time.Duration) Option

WithRegistryTTL sets the default registry TTL.