package hodor.common

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The watch service definition.

• rpc Watch (stream WatchRequest, stream WatchResponse)

  watch.proto:18

  Watch watches for events happening or that have happened. Both input and output are streams; the input stream is for creating and canceling watchers and the output stream sends events. One watch RPC can watch on multiple key ranges, streaming events for several watches at once. The entire event history can be watched starting from the last compaction revision.

  message WatchRequest

  watch.proto:23

  • string node_id = 1

    client node id

  • oneof request_union

    request_union is a request to either create a new watcher or cancel an existing watcher.

    • WatchCreateRequest create_request = 2

    • WatchCancelRequest cancel_request = 3

      WatchProgressRequest progress_request = 3;

  message WatchResponse

  watch.proto:50

  The response message containing the greetings

  • optional DataChangeEvent event = 1

Used in: WatchResponse

• DataChangeEvent.Type type = 1

• bytes key = 2

• bytes data = 3

Used in: DataChangeEvent

• NODE_ADDED = 0

• NODE_UPDATED = 1

• NODE_REMOVED = 2

• CONNECTION_SUSPENDED = 3

• CONNECTION_RECONNECTED = 4

• CONNECTION_LOST = 5

• INITIALIZED = 6

• Event.EventType type = 1

  type is the kind of event. If type is a PUT, it indicates new data has been stored to the key. If type is a DELETE, it indicates the key was deleted.

• optional KeyValue kv = 2

  kv holds the KeyValue for the event. A PUT event contains current kv pair. A PUT event with kv.Version=1 indicates the creation of a key. A DELETE/EXPIRE event contains the deleted key with its modification revision set to the revision of deletion.

Used in: Event

• PUT = 0

• DELETE = 1

Used in: Event

• bytes key = 1

  key is the key in bytes. An empty key is not allowed.

• int64 create_revision = 2

  create_revision is the revision of last creation on this key.

• int64 mod_revision = 3

  mod_revision is the revision of last modification on this key.

• int64 version = 4

  version is the version of the key. A deletion resets the version to zero and any modification of the key increases its version.

• bytes value = 5

  value is the value held by the key, in bytes.

• int64 lease = 6

  lease is the ID of the lease that attached to key. When the attached lease expires, the key will be deleted. If lease is 0, then no lease is attached to the key.

The request message containing the user's name.

Used in: WatchRequest

• bytes key = 1

  key is the key to register for watching.

• int64 watch_id = 2

  watch_id is the watcher id to cancel so that no more events are transmitted.

Used in: WatchRequest

• bytes key = 1

  key is the key to register for watching.

• int64 watch_id = 2

  watch_id is the watcher id to cancel so that no more events are transmitted.