Class: Rdkafka::Admin

Inherits:
Object
  • Object
show all
Defined in:
lib/rdkafka/admin.rb,
lib/rdkafka/admin/create_acl_handle.rb,
lib/rdkafka/admin/create_acl_report.rb,
lib/rdkafka/admin/delete_acl_handle.rb,
lib/rdkafka/admin/delete_acl_report.rb,
lib/rdkafka/admin/acl_binding_result.rb,
lib/rdkafka/admin/create_topic_handle.rb,
lib/rdkafka/admin/create_topic_report.rb,
lib/rdkafka/admin/delete_topic_handle.rb,
lib/rdkafka/admin/delete_topic_report.rb,
lib/rdkafka/admin/describe_acl_handle.rb,
lib/rdkafka/admin/describe_acl_report.rb,
lib/rdkafka/admin/delete_groups_handle.rb,
lib/rdkafka/admin/delete_groups_report.rb,
lib/rdkafka/admin/create_partitions_handle.rb,
lib/rdkafka/admin/create_partitions_report.rb

Defined Under Namespace

Classes: AclBindingResult, CreateAclHandle, CreateAclReport, CreatePartitionsHandle, CreatePartitionsReport, CreateTopicHandle, CreateTopicReport, DeleteAclHandle, DeleteAclReport, DeleteGroupsHandle, DeleteGroupsReport, DeleteTopicHandle, DeleteTopicReport, DescribeAclHandle, DescribeAclReport

Instance Method Summary collapse

Instance Method Details

#close ⇒ Object

Close this admin instance



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# File 'lib/rdkafka/admin.rb', line 31

def close
  return if closed?
  ObjectSpace.undefine_finalizer(self)
  @native_kafka.close
end

#closed? ⇒ Boolean

Whether this admin has closed

Returns:

  • (Boolean) 


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# File 'lib/rdkafka/admin.rb', line 38

def closed?
  @native_kafka.closed?
end

#create_acl(resource_type:, resource_name:, resource_pattern_type:, principal:, host:, operation:, permission_type:) ⇒ CreateAclHandle

Create acl

Parameters:

Returns:

  • (CreateAclHandle) —

    Create acl handle that can be used to wait for the result of creating the acl

Raises:



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# File 'lib/rdkafka/admin.rb', line 333

def create_acl(resource_type:, resource_name:, resource_pattern_type:, principal:, host:, operation:, permission_type:)
  closed_admin_check(__method__)

  # Create a rd_kafka_AclBinding_t representing the new acl
  error_buffer = FFI::MemoryPointer.from_string(" " * 256)
  new_acl_ptr = Rdkafka::Bindings.rd_kafka_AclBinding_new(
    resource_type,
    FFI::MemoryPointer.from_string(resource_name),
    resource_pattern_type,
    FFI::MemoryPointer.from_string(principal),
    FFI::MemoryPointer.from_string(host),
    operation,
    permission_type,
    error_buffer,
    256
  )
  if new_acl_ptr.null?
    raise Rdkafka::Config::ConfigError.new(error_buffer.read_string)
  end

  # Note that rd_kafka_CreateAcls can create more than one acl at a time
  pointer_array = [new_acl_ptr]
  acls_array_ptr = FFI::MemoryPointer.new(:pointer)
  acls_array_ptr.write_array_of_pointer(pointer_array)

  # Get a pointer to the queue that our request will be enqueued on
  queue_ptr = @native_kafka.with_inner do |inner|
    Rdkafka::Bindings.rd_kafka_queue_get_background(inner)
  end

  if queue_ptr.null?
    Rdkafka::Bindings.rd_kafka_AclBinding_destroy(new_acl_ptr)
    raise Rdkafka::Config::ConfigError.new("rd_kafka_queue_get_background was NULL")
  end

  # Create and register the handle that we will return to the caller
  create_acl_handle = CreateAclHandle.new
  create_acl_handle[:pending] = true
  create_acl_handle[:response] = -1
  CreateAclHandle.register(create_acl_handle)

  admin_options_ptr = @native_kafka.with_inner do |inner|
    Rdkafka::Bindings.rd_kafka_AdminOptions_new(inner, Rdkafka::Bindings::RD_KAFKA_ADMIN_OP_CREATEACLS)
  end

  Rdkafka::Bindings.rd_kafka_AdminOptions_set_opaque(admin_options_ptr, create_acl_handle.to_ptr)

  begin
    @native_kafka.with_inner do |inner|
      Rdkafka::Bindings.rd_kafka_CreateAcls(
        inner,
        acls_array_ptr,
        1,
        admin_options_ptr,
        queue_ptr
      )
    end
  rescue Exception
    CreateAclHandle.remove(create_acl_handle.to_ptr.address)
    raise
  ensure
    Rdkafka::Bindings.rd_kafka_AdminOptions_destroy(admin_options_ptr)
    Rdkafka::Bindings.rd_kafka_queue_destroy(queue_ptr)
    Rdkafka::Bindings.rd_kafka_AclBinding_destroy(new_acl_ptr)
  end

  create_acl_handle
end

#create_partitions(topic_name, partition_count) ⇒ CreateTopicHandle

Creates extra partitions for a given topic

Parameters:

  • topic_name (String)
  • partition_count (Integer) —

    how many partitions we want to end up with for given topic

Returns:

  • (CreateTopicHandle) —

    Create topic handle that can be used to wait for the result of creating the topic

Raises:

  • (ConfigError) —

    When the partition count or replication factor are out of valid range

  • (RdkafkaError) —

    When the topic name is invalid or the topic already exists

  • (RdkafkaError) —

    When the topic configuration is invalid



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# File 'lib/rdkafka/admin.rb', line 242

def create_partitions(topic_name, partition_count)
  closed_admin_check(__method__)

  @native_kafka.with_inner do |inner|
    error_buffer = FFI::MemoryPointer.from_string(" " * 256)
    new_partitions_ptr = Rdkafka::Bindings.rd_kafka_NewPartitions_new(
      FFI::MemoryPointer.from_string(topic_name),
      partition_count,
      error_buffer,
      256
    )
    if new_partitions_ptr.null?
      raise Rdkafka::Config::ConfigError.new(error_buffer.read_string)
    end

    pointer_array = [new_partitions_ptr]
    topics_array_ptr = FFI::MemoryPointer.new(:pointer)
    topics_array_ptr.write_array_of_pointer(pointer_array)

    # Get a pointer to the queue that our request will be enqueued on
    queue_ptr = Rdkafka::Bindings.rd_kafka_queue_get_background(inner)
    if queue_ptr.null?
      Rdkafka::Bindings.rd_kafka_NewPartitions_destroy(new_partitions_ptr)
      raise Rdkafka::Config::ConfigError.new("rd_kafka_queue_get_background was NULL")
    end

    # Create and register the handle we will return to the caller
    create_partitions_handle = CreatePartitionsHandle.new
    create_partitions_handle[:pending] = true
    create_partitions_handle[:response] = -1
    CreatePartitionsHandle.register(create_partitions_handle)
    admin_options_ptr = Rdkafka::Bindings.rd_kafka_AdminOptions_new(inner, Rdkafka::Bindings::RD_KAFKA_ADMIN_OP_CREATEPARTITIONS)
    Rdkafka::Bindings.rd_kafka_AdminOptions_set_opaque(admin_options_ptr, create_partitions_handle.to_ptr)

    begin
      Rdkafka::Bindings.rd_kafka_CreatePartitions(
        inner,
        topics_array_ptr,
        1,
        admin_options_ptr,
        queue_ptr
      )
    rescue Exception
      CreatePartitionsHandle.remove(create_partitions_handle.to_ptr.address)
      raise
    ensure
      Rdkafka::Bindings.rd_kafka_AdminOptions_destroy(admin_options_ptr)
      Rdkafka::Bindings.rd_kafka_queue_destroy(queue_ptr)
      Rdkafka::Bindings.rd_kafka_NewPartitions_destroy(new_partitions_ptr)
    end

    create_partitions_handle
  end
end

#create_topic(topic_name, partition_count, replication_factor, topic_config = {}) ⇒ CreateTopicHandle

Create a topic with the given partition count and replication factor

Returns:

  • (CreateTopicHandle) —

    Create topic handle that can be used to wait for the result of creating the topic

Raises:

  • (ConfigError) —

    When the partition count or replication factor are out of valid range

  • (RdkafkaError) —

    When the topic name is invalid or the topic already exists

  • (RdkafkaError) —

    When the topic configuration is invalid



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# File 'lib/rdkafka/admin.rb', line 50

def create_topic(topic_name, partition_count, replication_factor, topic_config={})
  closed_admin_check(__method__)

  # Create a rd_kafka_NewTopic_t representing the new topic
  error_buffer = FFI::MemoryPointer.from_string(" " * 256)
  new_topic_ptr = Rdkafka::Bindings.rd_kafka_NewTopic_new(
    FFI::MemoryPointer.from_string(topic_name),
    partition_count,
    replication_factor,
    error_buffer,
    256
  )
  if new_topic_ptr.null?
    raise Rdkafka::Config::ConfigError.new(error_buffer.read_string)
  end

  unless topic_config.nil?
    topic_config.each do |key, value|
      Rdkafka::Bindings.rd_kafka_NewTopic_set_config(
        new_topic_ptr,
        key.to_s,
        value.to_s
      )
    end
  end

  # Note that rd_kafka_CreateTopics can create more than one topic at a time
  pointer_array = [new_topic_ptr]
  topics_array_ptr = FFI::MemoryPointer.new(:pointer)
  topics_array_ptr.write_array_of_pointer(pointer_array)

  # Get a pointer to the queue that our request will be enqueued on
  queue_ptr = @native_kafka.with_inner do |inner|
    Rdkafka::Bindings.rd_kafka_queue_get_background(inner)
  end
  if queue_ptr.null?
    Rdkafka::Bindings.rd_kafka_NewTopic_destroy(new_topic_ptr)
    raise Rdkafka::Config::ConfigError.new("rd_kafka_queue_get_background was NULL")
  end

  # Create and register the handle we will return to the caller
  create_topic_handle = CreateTopicHandle.new
  create_topic_handle[:pending] = true
  create_topic_handle[:response] = -1
  CreateTopicHandle.register(create_topic_handle)
  admin_options_ptr = @native_kafka.with_inner do |inner|
    Rdkafka::Bindings.rd_kafka_AdminOptions_new(inner, Rdkafka::Bindings::RD_KAFKA_ADMIN_OP_CREATETOPICS)
  end
  Rdkafka::Bindings.rd_kafka_AdminOptions_set_opaque(admin_options_ptr, create_topic_handle.to_ptr)

  begin
    @native_kafka.with_inner do |inner|
      Rdkafka::Bindings.rd_kafka_CreateTopics(
        inner,
        topics_array_ptr,
        1,
        admin_options_ptr,
        queue_ptr
      )
    end
  rescue Exception
    CreateTopicHandle.remove(create_topic_handle.to_ptr.address)
    raise
  ensure
    Rdkafka::Bindings.rd_kafka_AdminOptions_destroy(admin_options_ptr)
    Rdkafka::Bindings.rd_kafka_queue_destroy(queue_ptr)
    Rdkafka::Bindings.rd_kafka_NewTopic_destroy(new_topic_ptr)
  end

  create_topic_handle
end

#delete_acl(resource_type:, resource_name:, resource_pattern_type:, principal:, host:, operation:, permission_type:) ⇒ DeleteAclHandle

Delete acl

Parameters:

Returns:

  • (DeleteAclHandle) —

    Delete acl handle that can be used to wait for the result of deleting the acl

Raises:



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# File 'lib/rdkafka/admin.rb', line 438

def delete_acl(resource_type:, resource_name:, resource_pattern_type:, principal:, host:, operation:, permission_type:)
  closed_admin_check(__method__)

  # Create a rd_kafka_AclBinding_t representing the acl to be deleted
  error_buffer = FFI::MemoryPointer.from_string(" " * 256)

  delete_acl_ptr = Rdkafka::Bindings.rd_kafka_AclBindingFilter_new(
    resource_type,
    resource_name ? FFI::MemoryPointer.from_string(resource_name) : nil,
    resource_pattern_type,
    principal ? FFI::MemoryPointer.from_string(principal) : nil,
    host ? FFI::MemoryPointer.from_string(host) : nil,
    operation,
    permission_type,
    error_buffer,
    256
  )

  if delete_acl_ptr.null?
    raise Rdkafka::Config::ConfigError.new(error_buffer.read_string)
  end

  # Note that rd_kafka_DeleteAcls can delete more than one acl at a time
  pointer_array = [delete_acl_ptr]
  acls_array_ptr = FFI::MemoryPointer.new(:pointer)
  acls_array_ptr.write_array_of_pointer(pointer_array)

  # Get a pointer to the queue that our request will be enqueued on
  queue_ptr = @native_kafka.with_inner do |inner|
    Rdkafka::Bindings.rd_kafka_queue_get_background(inner)
  end

  if queue_ptr.null?
    Rdkafka::Bindings.rd_kafka_AclBinding_destroy(new_acl_ptr)
    raise Rdkafka::Config::ConfigError.new("rd_kafka_queue_get_background was NULL")
  end

  # Create and register the handle that we will return to the caller
  delete_acl_handle = DeleteAclHandle.new
  delete_acl_handle[:pending] = true
  delete_acl_handle[:response] = -1
  DeleteAclHandle.register(delete_acl_handle)

  admin_options_ptr = @native_kafka.with_inner do |inner|
    Rdkafka::Bindings.rd_kafka_AdminOptions_new(inner, Rdkafka::Bindings::RD_KAFKA_ADMIN_OP_DELETEACLS)
  end

  Rdkafka::Bindings.rd_kafka_AdminOptions_set_opaque(admin_options_ptr, delete_acl_handle.to_ptr)

  begin
    @native_kafka.with_inner do |inner|
      Rdkafka::Bindings.rd_kafka_DeleteAcls(
        inner,
        acls_array_ptr,
        1,
        admin_options_ptr,
        queue_ptr
      )
    end
  rescue Exception
    DeleteAclHandle.remove(delete_acl_handle.to_ptr.address)
    raise
  ensure
    Rdkafka::Bindings.rd_kafka_AdminOptions_destroy(admin_options_ptr)
    Rdkafka::Bindings.rd_kafka_queue_destroy(queue_ptr)
    Rdkafka::Bindings.rd_kafka_AclBinding_destroy(delete_acl_ptr)
  end

  delete_acl_handle
end

#delete_group(group_id) ⇒ Object 



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# File 'lib/rdkafka/admin.rb', line 122

def delete_group(group_id)
  closed_admin_check(__method__)

  # Create a rd_kafka_DeleteGroup_t representing the new topic
  delete_groups_ptr = Rdkafka::Bindings.rd_kafka_DeleteGroup_new(
    FFI::MemoryPointer.from_string(group_id)
  )

  pointer_array = [delete_groups_ptr]
  groups_array_ptr = FFI::MemoryPointer.new(:pointer)
  groups_array_ptr.write_array_of_pointer(pointer_array)

  # Get a pointer to the queue that our request will be enqueued on
  queue_ptr = @native_kafka.with_inner do |inner|
    Rdkafka::Bindings.rd_kafka_queue_get_background(inner)
  end
  if queue_ptr.null?
    Rdkafka::Bindings.rd_kafka_DeleteTopic_destroy(delete_topic_ptr)
    raise Rdkafka::Config::ConfigError.new("rd_kafka_queue_get_background was NULL")
  end

  # Create and register the handle we will return to the caller
  delete_groups_handle = DeleteGroupsHandle.new
  delete_groups_handle[:pending] = true
  delete_groups_handle[:response] = -1
  DeleteGroupsHandle.register(delete_groups_handle)
  admin_options_ptr = @native_kafka.with_inner do |inner|
    Rdkafka::Bindings.rd_kafka_AdminOptions_new(inner, Rdkafka::Bindings::RD_KAFKA_ADMIN_OP_DELETETOPICS)
  end
  Rdkafka::Bindings.rd_kafka_AdminOptions_set_opaque(admin_options_ptr, delete_groups_handle.to_ptr)

  begin
    @native_kafka.with_inner do |inner|
      Rdkafka::Bindings.rd_kafka_DeleteGroups(
        inner,
        groups_array_ptr,
        1,
        admin_options_ptr,
        queue_ptr
      )
    end
  rescue Exception
    DeleteGroupsHandle.remove(delete_groups_handle.to_ptr.address)
    raise
  ensure
    Rdkafka::Bindings.rd_kafka_AdminOptions_destroy(admin_options_ptr)
    Rdkafka::Bindings.rd_kafka_queue_destroy(queue_ptr)
    Rdkafka::Bindings.rd_kafka_DeleteGroup_destroy(delete_groups_ptr)
  end

  delete_groups_handle
end

#delete_topic(topic_name) ⇒ DeleteTopicHandle

Deletes the named topic

Returns:

  • (DeleteTopicHandle) —

    Delete topic handle that can be used to wait for the result of deleting the topic

Raises:

  • (RdkafkaError) —

    When the topic name is invalid or the topic does not exist



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# File 'lib/rdkafka/admin.rb', line 180

def delete_topic(topic_name)
  closed_admin_check(__method__)

  # Create a rd_kafka_DeleteTopic_t representing the topic to be deleted
  delete_topic_ptr = Rdkafka::Bindings.rd_kafka_DeleteTopic_new(FFI::MemoryPointer.from_string(topic_name))

  # Note that rd_kafka_DeleteTopics can create more than one topic at a time
  pointer_array = [delete_topic_ptr]
  topics_array_ptr = FFI::MemoryPointer.new(:pointer)
  topics_array_ptr.write_array_of_pointer(pointer_array)

  # Get a pointer to the queue that our request will be enqueued on
  queue_ptr = @native_kafka.with_inner do |inner|
    Rdkafka::Bindings.rd_kafka_queue_get_background(inner)
  end
  if queue_ptr.null?
    Rdkafka::Bindings.rd_kafka_DeleteTopic_destroy(delete_topic_ptr)
    raise Rdkafka::Config::ConfigError.new("rd_kafka_queue_get_background was NULL")
  end

  # Create and register the handle we will return to the caller
  delete_topic_handle = DeleteTopicHandle.new
  delete_topic_handle[:pending] = true
  delete_topic_handle[:response] = -1
  DeleteTopicHandle.register(delete_topic_handle)
  admin_options_ptr = @native_kafka.with_inner do |inner|
    Rdkafka::Bindings.rd_kafka_AdminOptions_new(inner, Rdkafka::Bindings::RD_KAFKA_ADMIN_OP_DELETETOPICS)
  end
  Rdkafka::Bindings.rd_kafka_AdminOptions_set_opaque(admin_options_ptr, delete_topic_handle.to_ptr)

  begin
    @native_kafka.with_inner do |inner|
      Rdkafka::Bindings.rd_kafka_DeleteTopics(
        inner,
        topics_array_ptr,
        1,
        admin_options_ptr,
        queue_ptr
      )
    end
  rescue Exception
    DeleteTopicHandle.remove(delete_topic_handle.to_ptr.address)
    raise
  ensure
    Rdkafka::Bindings.rd_kafka_AdminOptions_destroy(admin_options_ptr)
    Rdkafka::Bindings.rd_kafka_queue_destroy(queue_ptr)
    Rdkafka::Bindings.rd_kafka_DeleteTopic_destroy(delete_topic_ptr)
  end

  delete_topic_handle
end

#describe_acl(resource_type:, resource_name:, resource_pattern_type:, principal:, host:, operation:, permission_type:) ⇒ DescribeAclHandle

Describe acls

Parameters:

Returns:

  • (DescribeAclHandle) —

    Describe acl handle that can be used to wait for the result of fetching acls

Raises:



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# File 'lib/rdkafka/admin.rb', line 545

def describe_acl(resource_type:, resource_name:, resource_pattern_type:, principal:, host:, operation:, permission_type:)
  closed_admin_check(__method__)

  # Create a rd_kafka_AclBinding_t with the filters to fetch existing acls
  error_buffer = FFI::MemoryPointer.from_string(" " * 256)
  describe_acl_ptr = Rdkafka::Bindings.rd_kafka_AclBindingFilter_new(
    resource_type,
    resource_name ? FFI::MemoryPointer.from_string(resource_name) : nil,
    resource_pattern_type,
    principal ? FFI::MemoryPointer.from_string(principal) : nil,
    host ? FFI::MemoryPointer.from_string(host) : nil,
    operation,
    permission_type,
    error_buffer,
    256
  )
  if describe_acl_ptr.null?
    raise Rdkafka::Config::ConfigError.new(error_buffer.read_string)
  end

  # Get a pointer to the queue that our request will be enqueued on
  queue_ptr = @native_kafka.with_inner do |inner|
    Rdkafka::Bindings.rd_kafka_queue_get_background(inner)
  end

  if queue_ptr.null?
    Rdkafka::Bindings.rd_kafka_AclBinding_destroy(new_acl_ptr)
    raise Rdkafka::Config::ConfigError.new("rd_kafka_queue_get_background was NULL")
  end

  # Create and register the handle that we will return to the caller
  describe_acl_handle = DescribeAclHandle.new
  describe_acl_handle[:pending] = true
  describe_acl_handle[:response] = -1
  DescribeAclHandle.register(describe_acl_handle)

  admin_options_ptr = @native_kafka.with_inner do |inner|
    Rdkafka::Bindings.rd_kafka_AdminOptions_new(inner, Rdkafka::Bindings::RD_KAFKA_ADMIN_OP_DESCRIBEACLS)
  end

  Rdkafka::Bindings.rd_kafka_AdminOptions_set_opaque(admin_options_ptr, describe_acl_handle.to_ptr)

  begin
    @native_kafka.with_inner do |inner|
      Rdkafka::Bindings.rd_kafka_DescribeAcls(
        inner,
        describe_acl_ptr,
        admin_options_ptr,
        queue_ptr
      )
    end
  rescue Exception
    DescribeAclHandle.remove(describe_acl_handle.to_ptr.address)
    raise
  ensure
    Rdkafka::Bindings.rd_kafka_AdminOptions_destroy(admin_options_ptr)
    Rdkafka::Bindings.rd_kafka_queue_destroy(queue_ptr)
    Rdkafka::Bindings.rd_kafka_AclBinding_destroy(describe_acl_ptr)
  end

  describe_acl_handle
end

#finalizer ⇒ Object 



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# File 'lib/rdkafka/admin.rb', line 13

def finalizer
  ->(_) { close }
end

#metadata(topic_name = nil, timeout_ms = 2_000) ⇒ Metadata

Performs the metadata request using admin

Parameters:

  • topic_name (String, nil) (defaults to: nil) —

    metadat about particular topic or all if nil

  • timeout_ms (Integer) (defaults to: 2_000) —

    metadata request timeout

Returns:



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# File 'lib/rdkafka/admin.rb', line 22

def metadata(topic_name = nil, timeout_ms = 2_000)
  closed_admin_check(__method__)

  @native_kafka.with_inner do |inner|
    Metadata.new(inner, topic_name, timeout_ms)
  end
end