integrity

type Data struct {
	// Source is the origin of data, i.e. key in case of etcd or tarantool-based collectors.
	Source string
	// Value is data collected.
	Value []byte
	// Revision is data revision.
	Revision int64
}

type DataCollector interface {
	// Collect collects data from a source.
	Collect() ([]Data, error)
}

type DataCollectorFactory interface {
	// NewFile creates a new data collector to collect configuration from a file.
	NewFile(path string) (DataCollector, error)
	// NewEtcd creates a new data collector to collect configuration from etcd.
	NewEtcd(etcdcli *clientv3.Client,
		prefix, key string, timeout time.Duration) (DataCollector, error)
	// NewTarantool creates a new data collector to collect configuration from
	// tarantool config storage.
	NewTarantool(conn tarantool.Connector,
		prefix, key string, timeout time.Duration) (DataCollector, error)
}

type DataPublisher interface {
	// Publish publishes the interface or returns an error.
	Publish(revision int64, data []byte) error
}

type DataPublisherFactory interface {
	// NewFile creates a new DataPublisher to publish data into a file.
	NewFile(path string) (DataPublisher, error)
	// NewEtcd creates a new DataPublisher to publish data into etcd.
	NewEtcd(etcdcli *clientv3.Client,
		prefix, key string, timeout time.Duration) (DataPublisher, error)
	// NewTarantool creates a new DataPublisher to publish data into tarantool
	// config storage.
	NewTarantool(conn tarantool.Connector,
		prefix, key string, timeout time.Duration) (DataPublisher, error)
}

type IntegrityCtx struct {
	// Repository is a repository used to check integrity of files.
	Repository Repository
}

type Repository interface {
	// Read makes sure the file is not modified and reads it.
	Read(path string) (io.ReadCloser, error)
	// ValidateAll checks that all the files stored in the repository
	// were not modified.
	ValidateAll() error
}

type Signer interface {
	// Sign generates data to sign a package.
	Sign(basePath string, appNames []string) error
}