th2-common-utils-py

Python library with useful functions for developers and QA needs.

Installation

pip install th2-common-utils

Usage

1. Message fields access

The library provides a convenient way for Message fields access.

Instead of this:

msg.fields['BO5Items'].list_value.values[0].message_value.fields['segment_instance_number'].message_value.fields['segment_number'].simple_value

You can do this:

import th2_common_utils

msg['BO5Items'][0]['segment_instance_number']['segment_number']

2. Converters

• message_to_dict(message) - note, you will lose all metadata of the Message.
• dict_to_message(fields, session_alias, message_type) - where:
  • fields - required argument - message fields as a python dict;
  • session_alias and message_type - optional arguments - used to generate message metadata.
• dict_to_root_message_filter(message_type, message_filter, metadata_filter, ignore_fields, check_repeating_group_order, time_precision, decimal_precision) - all arguments are optional.
• message_to_typed_message(message, message_type) - where:
  • message - Message object;
  • message_type - TypedMessage class object.
• message_to_table(message) - where:
  • message - Message object or dict.

To import functions above:

from th2_common_utils import message_to_dict, dict_to_message # ...

3. Working with events

th2-common-utils provides the class to work with events - EventUtils.

Methods of EventUtils class:

• create_event_body(component) - creates event body from component as bytes.
• create_event_id() - creates EventID.
• create_event(id, parent_id, start_timestamp, end_timestamp, status, name, type, body, attached_message_ids) - creates event; all arguments are optional.