moonstream 0.1.2

Moonstream: Open source blockchain analytics

Moonstream Python client

This is the Python client library for the Moonstream API.

Installation

This library assumes you are using Python 3.6 or greater.

Install using pip:

pip install moonstream

Usage

• Source environment variable with access token to Moonstream, you can create one on page https://moonstream.to/account/tokens/

access_token = os.environ.get("MOONSTREAM_ACCESS_TOKEN")

• Create an object of Moonstream client and authorize

mc = Moonstream()
mc.authorize(access_token)

create_stream method

Return a stream of event for time range.

From timestamp to None, from bottom to top

When end_time is not set.

for events in mc.create_stream(
    start_time=1637834400, end_time=None, q="type:ethereum_blockchain"
):
    event_timestamp_list = [e["event_timestamp"] for e in events["events"]]
    print(event_timestamp_list)

In this case we will be receiving events from bottom of history to recent time in next order:

[1637836177, ..., 1637834440]
[1637837980, ..., 1637836226]
# Until we will get latest event,
# then we will be receiving empty lists
[]
[]
# Until new events will be available
[1637839306, 1637839306, 1637839306, 1637839306]
[]
# Continuing...

From timestamp to timestamp, from top to bottom

When start_time is greater then end_time.

for events in mc.create_stream(
    start_time=1637839281, end_time=1637830890, q="type:ethereum_blockchain"
):
    event_timestamp_list = [e["event_timestamp"] for e in events["events"]]
    print(event_timestamp_list)

Stream of event packs will be generating from recent timestamp to older and inner list of transactions for each pack will be in most recent to older event timestamp range:

[1637839280, ..., 1637838094]
[1637838086, ..., 1637836340]
...
[1637834488, ..., 1637832699]
[1637832676, ..., 1637830903]

From timestamp to timestamp, from bottom to top

When start_time is less than end_time.

for events in mc.create_stream(
    start_time=1637830890, end_time=1637839281, q="type:ethereum_blockchain"
):
    event_timestamp_list = [e["event_timestamp"] for e in events["events"]]
    print(event_timestamp_list)

You start receiving list of older events from bottom of history to newest:

[1637832676, ..., 1637830903]
[1637834488, ..., 1637832699]
...
[1637838086, ..., 1637836340]
[1637839280, ..., 1637838094]