Alter topic feature

Author: vgvoleg

ydb/_apis.py

@@ -123,6 +123,7 @@ class TopicService(object):
 
     CreateTopic = "CreateTopic"
     DescribeTopic = "DescribeTopic"
+    AlterTopic = "AlterTopic"
     DropTopic = "DropTopic"
     StreamRead = "StreamRead"
     StreamWrite = "StreamWrite"

ydb/_grpc/grpcwrapper/ydb_topic.py

@@ -883,6 +883,39 @@ def from_proto(
             )
 
 
+@dataclass
+class AlterConsumer(IToProto, IFromPublic):
+    name: str
+    set_important: bool
+    set_read_from: datetime.datetime
+    set_supported_codecs: SupportedCodecs
+    alter_attributes: Dict[str, str]
+
+    def to_proto(self) -> ydb_topic_pb2.AlterConsumer:
+        return ydb_topic_pb2.AlterConsumer(
+            name=self.name,
+            set_important=self.set_important,
+            set_read_from=proto_timestamp_from_datetime(self.set_read_from),
+            set_supported_codecs=self.set_supported_codecs.to_proto(),
+            alter_attributes=self.alter_attributes,
+        )
+
+    @staticmethod
+    def from_public(alter_consumer: ydb_topic_public_types.PublicAlterConsumer) -> AlterConsumer:
+        if not alter_consumer:
+            return None
+
+        supported_codecs = alter_consumer.set_supported_codecs if alter_consumer.set_supported_codecs else []
+
+        return AlterConsumer(
+            name=alter_consumer.name,
+            set_important=alter_consumer.set_important,
+            set_read_from=alter_consumer.set_read_from,
+            set_supported_codecs=SupportedCodecs(codecs=supported_codecs),
+            alter_attributes=alter_consumer.alter_attributes,
+        )
+
+
 @dataclass
 class PartitioningSettings(IToProto, IFromProto):
     min_active_partitions: int
@@ -902,6 +935,25 @@ def to_proto(self) -> ydb_topic_pb2.PartitioningSettings:
         )
 
 
+@dataclass
+class AlterPartitioningSettings(IToProto, IFromProto):
+    set_min_active_partitions: int
+    set_partition_count_limit: int
+
+    @staticmethod
+    def from_proto(msg: ydb_topic_pb2.AlterPartitioningSettings) -> "AlterPartitioningSettings":
+        return AlterPartitioningSettings(
+            set_min_active_partitions=msg.set_min_active_partitions,
+            set_partition_count_limit=msg.set_partition_count_limit,
+        )
+
+    def to_proto(self) -> ydb_topic_pb2.AlterPartitioningSettings:
+        return ydb_topic_pb2.AlterPartitioningSettings(
+            set_min_active_partitions=self.set_min_active_partitions,
+            set_partition_count_limit=self.set_partition_count_limit,
+        )
+
+
 class MeteringMode(int, IFromProto, IFromPublic, IToPublic):
     UNSPECIFIED = 0
     RESERVED_CAPACITY = 1
@@ -995,6 +1047,83 @@ class CreateTopicResult:
     pass
 
 
+@dataclass
+class AlterTopicRequest(IToProto, IFromPublic):
+    path: str
+    add_consumers: List["Consumer"]
+    alter_partitioning_settings: AlterPartitioningSettings
+    set_retention_period: datetime.timedelta
+    set_retention_storage_mb: int
+    set_supported_codecs: SupportedCodecs
+    set_partition_write_burst_bytes: typing.Optional[int]
+    set_partition_write_speed_bytes_per_second: typing.Optional[int]
+    alter_attributes: Dict[str, str]
+    alter_consumers: List[AlterConsumer]
+    drop_consumers: List[str]
+    set_metering_mode: "MeteringMode"
+
+    def to_proto(self) -> ydb_topic_pb2.AlterTopicRequest:
+        return ydb_topic_pb2.AlterTopicRequest(
+            path=self.path,
+            add_consumers=[consumer.to_proto() for consumer in self.add_consumers],
+            alter_partitioning_settings=self.alter_partitioning_settings.to_proto(),
+            set_retention_period=proto_duration_from_timedelta(self.set_retention_period),
+            set_retention_storage_mb=self.set_retention_storage_mb,
+            set_supported_codecs=self.set_supported_codecs.to_proto(),
+            set_partition_write_burst_bytes=self.set_partition_write_burst_bytes,
+            set_partition_write_speed_bytes_per_second=self.set_partition_write_speed_bytes_per_second,
+            alter_attributes=self.alter_attributes,
+            alter_consumers=[consumer.to_proto() for consumer in self.alter_consumers],
+            drop_consumers=list(self.drop_consumers),
+            set_metering_mode=self.set_metering_mode,
+        )
+
+    @staticmethod
+    def from_public(req: ydb_topic_public_types.AlterTopicRequestParams) -> AlterTopicRequest:
+        add_consumers = []
+        if req.add_consumers:
+            for consumer in req.add_consumers:
+                if isinstance(consumer, str):
+                    consumer = ydb_topic_public_types.PublicConsumer(name=consumer)
+                add_consumers.append(Consumer.from_public(consumer))
+
+        alter_consumers = []
+        if req.alter_consumers:
+            for consumer in req.alter_consumers:
+                if isinstance(consumer, str):
+                    consumer = ydb_topic_public_types.PublicAlterConsumer(name=consumer)
+                alter_consumers.append(AlterConsumer.from_public(consumer))
+
+        drop_consumers = req.drop_consumers if req.drop_consumers else []
+
+        supported_codecs = req.set_supported_codecs if req.set_supported_codecs else []
+
+        return AlterTopicRequest(
+            path=req.path,
+            alter_partitioning_settings=AlterPartitioningSettings(
+                set_min_active_partitions=req.set_min_active_partitions,
+                set_partition_count_limit=req.set_partition_count_limit,
+            ),
+            add_consumers=add_consumers,
+            set_retention_period=req.set_retention_period,
+            set_retention_storage_mb=req.set_retention_storage_mb,
+            set_supported_codecs=SupportedCodecs(
+                codecs=supported_codecs,
+            ),
+            set_partition_write_burst_bytes=req.set_partition_write_burst_bytes,
+            set_partition_write_speed_bytes_per_second=req.set_partition_write_speed_bytes_per_second,
+            alter_attributes=req.alter_attributes,
+            alter_consumers=alter_consumers,
+            drop_consumers=drop_consumers,
+            set_metering_mode=MeteringMode.from_public(req.set_metering_mode),
+        )
+
+
+@dataclass
+class AlterTopicResult:
+    pass
+
+
 @dataclass
 class DescribeTopicRequest:
     path: str

ydb/_grpc/grpcwrapper/ydb_topic_public_types.py

@@ -30,6 +30,23 @@ class CreateTopicRequestParams:
     metering_mode: Optional["PublicMeteringMode"]
 
 
+@dataclass
+class AlterTopicRequestParams:
+    path: str
+    set_min_active_partitions: Optional[int]
+    set_partition_count_limit: Optional[int]
+    add_consumers: Optional[List[Union["PublicConsumer", str]]]
+    alter_consumers: Optional[List[Union["PublicAlterConsumer", str]]]
+    drop_consumers: Optional[List[str]]  # TODO: clarify
+    alter_attributes: Optional[Dict[str, str]]
+    set_metering_mode: Optional["PublicMeteringMode"]
+    set_partition_write_speed_bytes_per_second: Optional[int]
+    set_partition_write_burst_bytes: Optional[int]
+    set_retention_period: Optional[datetime.timedelta]
+    set_retention_storage_mb: Optional[int]
+    set_supported_codecs: Optional[List[Union["PublicCodec", int]]]
+
+
 class PublicCodec(int):
     """
     Codec value may contain any int number.
@@ -73,6 +90,28 @@ class PublicConsumer:
     "Attributes of consumer"
 
 
+@dataclass
+class PublicAlterConsumer:
+    name: str
+    set_important: bool = False
+    """
+    Consumer may be marked as 'important'. It means messages for this consumer will never expire due to retention.
+    User should take care that such consumer never stalls, to prevent running out of disk space.
+    """
+
+    set_read_from: Optional[datetime.datetime] = None
+    "All messages with smaller server written_at timestamp will be skipped."
+
+    set_supported_codecs: List[PublicCodec] = field(default_factory=lambda: list())
+    """
+    List of supported codecs by this consumer.
+    supported_codecs on topic must be contained inside this list.
+    """
+
+    alter_attributes: Dict[str, str] = field(default_factory=lambda: dict())
+    "Attributes of consumer"
+
+
 @dataclass
 class DropTopicRequestParams(IToProto):
     path: str

ydb/topic.py

@@ -6,6 +6,7 @@
     "TopicClientSettings",
     "TopicCodec",
     "TopicConsumer",
+    "TopicAlterConsumer",
     "TopicDescription",
     "TopicError",
     "TopicMeteringMode",
@@ -77,6 +78,7 @@
     PublicPartitionStats as TopicPartitionStats,
     PublicCodec as TopicCodec,
     PublicConsumer as TopicConsumer,
+    PublicAlterConsumer as TopicAlterConsumer,
     PublicMeteringMode as TopicMeteringMode,
 )
 
@@ -145,6 +147,53 @@ async def create_topic(
             _wrap_operation,
         )
 
+    async def alter_topic(
+        self,
+        path: str,
+        set_min_active_partitions: Optional[int] = None,
+        set_partition_count_limit: Optional[int] = None,
+        add_consumers: Optional[List[Union[TopicConsumer, str]]] = None,
+        alter_consumers: Optional[List[Union[TopicAlterConsumer, str]]] = None,
+        drop_consumers: Optional[List[str]] = None,
+        alter_attributes: Optional[Dict[str, str]] = None,
+        set_metering_mode: Optional[TopicMeteringMode] = None,
+        set_partition_write_speed_bytes_per_second: Optional[int] = None,
+        set_partition_write_burst_bytes: Optional[int] = None,
+        set_retention_period: Optional[datetime.timedelta] = None,
+        set_retention_storage_mb: Optional[int] = None,
+        set_supported_codecs: Optional[List[Union[TopicCodec, int]]] = None,
+    ):
+        """
+        alter topic command
+
+        :param path: full path to topic
+        :param set_min_active_partitions: Minimum partition count auto merge would stop working at.
+        :param set_partition_count_limit: Limit for total partition count, including active (open for write)
+            and read-only partitions.
+        :param add_consumers: List of consumers for this topic to add
+        :param alter_consumers: List of consumers for this topic to alter
+        :param drop_consumers: List of consumer names for this topic to drop
+        :param alter_attributes: User and server attributes of topic.
+            Server attributes starts from "_" and will be validated by server.
+        :param set_metering_mode: Metering mode for the topic in a serverless database
+        :param set_partition_write_speed_bytes_per_second: Partition write speed in bytes per second
+        :param set_partition_write_burst_bytes: Burst size for write in partition, in bytes
+        :param set_retention_period: How long data in partition should be stored
+        :param set_retention_storage_mb: How much data in partition should be stored
+        :param set_supported_codecs: List of allowed codecs for writers. Writes with codec not from this list are forbidden.
+            Empty list mean disable codec compatibility checks for the topic.
+        """
+        args = locals().copy()
+        del args["self"]
+        req = _ydb_topic_public_types.AlterTopicRequestParams(**args)
+        req = _ydb_topic.AlterTopicRequest.from_public(req)
+        await self._driver(
+            req.to_proto(),
+            _apis.TopicService.Stub,
+            _apis.TopicService.AlterTopic,
+            _wrap_operation,
+        )
+
     async def describe_topic(self, path: str, include_stats: bool = False) -> TopicDescription:
         args = locals().copy()
         del args["self"]
@@ -297,6 +346,55 @@ def create_topic(
             _wrap_operation,
         )
 
+    def alter_topic(
+        self,
+        path: str,
+        set_min_active_partitions: Optional[int] = None,
+        set_partition_count_limit: Optional[int] = None,
+        add_consumers: Optional[List[Union[TopicConsumer, str]]] = None,
+        alter_consumers: Optional[List[Union[TopicAlterConsumer, str]]] = None,
+        drop_consumers: Optional[List[str]] = None,
+        alter_attributes: Optional[Dict[str, str]] = None,
+        set_metering_mode: Optional[TopicMeteringMode] = None,
+        set_partition_write_speed_bytes_per_second: Optional[int] = None,
+        set_partition_write_burst_bytes: Optional[int] = None,
+        set_retention_period: Optional[datetime.timedelta] = None,
+        set_retention_storage_mb: Optional[int] = None,
+        set_supported_codecs: Optional[List[Union[TopicCodec, int]]] = None,
+    ):
+        """
+        alter topic command
+
+        :param path: full path to topic
+        :param set_min_active_partitions: Minimum partition count auto merge would stop working at.
+        :param set_partition_count_limit: Limit for total partition count, including active (open for write)
+            and read-only partitions.
+        :param add_consumers: List of consumers for this topic to add
+        :param alter_consumers: List of consumers for this topic to alter
+        :param drop_consumers: List of consumer names for this topic to drop
+        :param alter_attributes: User and server attributes of topic.
+            Server attributes starts from "_" and will be validated by server.
+        :param set_metering_mode: Metering mode for the topic in a serverless database
+        :param set_partition_write_speed_bytes_per_second: Partition write speed in bytes per second
+        :param set_partition_write_burst_bytes: Burst size for write in partition, in bytes
+        :param set_retention_period: How long data in partition should be stored
+        :param set_retention_storage_mb: How much data in partition should be stored
+        :param set_supported_codecs: List of allowed codecs for writers. Writes with codec not from this list are forbidden.
+            Empty list mean disable codec compatibility checks for the topic.
+        """
+        args = locals().copy()
+        del args["self"]
+        self._check_closed()
+
+        req = _ydb_topic_public_types.AlterTopicRequestParams(**args)
+        req = _ydb_topic.AlterTopicRequest.from_public(req)
+        self._driver(
+            req.to_proto(),
+            _apis.TopicService.Stub,
+            _apis.TopicService.AlterTopic,
+            _wrap_operation,
+        )
+
     def describe_topic(self, path: str, include_stats: bool = False) -> TopicDescription:
         args = locals().copy()
         del args["self"]