Dropmate-py

Python helpers for the EDC Dropmate.

Installation

Install by cloning this repository and installing into a virtual environment:

$ pip install .

You can confirm proper installation via the dropmate CLI:

$ dropmate --help
Usage: dropmate [OPTIONS] COMMAND [ARGS]...

Options:
  --help  Show this message and exit.

Commands:
  audit        Audit a consolidated Dropmate log.
  audit-bulk   Audit a directory of consolidated Dropmate logs.
  consolidate  Merge a directory of logs into a simplified drop record.

Usage

NOTE: All functionality assumes that log records have been provided by Dropmate app version 1.5.16 or newer. Prior versions may not contain all the necessary data columns to conduct the data audit, and there may also be column naming discrepancies between the iOS and Android apps.

Supported Audits

The following audits are supported:

• Empty Drop Record
• Minimum Altitude Loss
• Minimum Time Between Drop Records
  • Time delta between the end of the previous drop record and the beginning of the next.
  • Short deltas may indicate that the previous drop record ended prematurely & restarted mid-air
• Minimum Dropmate Firmware Version
• Dropmate Internal Clock Drift
  • Measured as the delta between the scanning device's clock at scan time and the Dropmate's internal clock
• Battery health
• Device health

Environment Variables

The following environment variables are provided to help customize pipeline behaviors.

Variable Name	Description	Default
PROMPT_START_DIR	Start path for UI file/dir prompt	'.'

dropmate audit

Process a consolidated Dropmate log CSV.

Input Parameters

Parameter	Description	Type	Default
--log-filepath	Path to Dropmate log CSV to parse.	Path|None	GUI Prompt
--min-alt-loss-ft	Threshold altitude delta, feet.	int	200
--min-firmware	Threshold firmware version.	int|float	5
--internal-time-delta-minutes	Dropmate internal clock delta from real-time.	int	60
--time-between-delta-minutes	Delta between the start of a drop record and end of the previous	int	10

dropmate audit-bulk

Batch process a directory of consolidated Dropmate log CSVs.

Input Parameters

Parameter	Description	Type	Default
--log-dir	Path to Dropmate log directory to parse.	Path|None	GUI Prompt
--log-pattern	Dropmate log file glob pattern.1,2	str	"*.csv"
--min-alt-loss-ft	Threshold altitude delta, feet.	int	200
--min-firmware	Threshold firmware version.	int|float	5
--internal-time-delta-minutes	Dropmate internal clock delta from real-time.	int	60
--time-between-delta-minutes	Delta between the start of a drop record and end of the previous	int	10

1. Case sensitivity is deferred to the host OS
2. Recursive globbing requires manual specification (e.g. **/*.csv)

dropmate consolidate

Merge a directory of Dropmate app outputs into a deduplicated, simplified drop record.

Input Parameters

Parameter	Description	Type	Default
--log-dir	Path to Dropmate log directory to parse.	Path|None	GUI Prompt
--log-pattern	Dropmate log file glob pattern.1,2	str	"dropmate_records_*"
--out-filename	Consolidated log filename.3	str	consolidated_dropmate_records.csv

1. Case sensitivity is deferred to the host OS
2. Recursive globbing requires manual specification (e.g. **/dropmate_records_*)
3. Consolidate log will be written into the specified log directory; any existing file of the same name will be overwritten

Contributing

NOTE: Due to deployment environment restrictions preventing the use of compiled libraries (e.g. Polars, Pandas/Numpy), tooling is intentionally limited to pure-Python implementations.

Development Environment

This project uses Poetry to manage dependencies. With your fork cloned to your local machine, you can install the project and its dependencies to create a development environment using:

$ poetry install

A pre-commit configuration is also provided to create a pre-commit hook so linting errors aren't committed:

$ pre-commit install

Testing & Coverage

A pytest suite is provided, with coverage reporting from pytest-cov. A tox configuration is provided to test across all supported versions of Python. Testing will be skipped for Python versions that cannot be found.

$ tox

Details on missing coverage, including in the test suite, is provided in the report to allow the user to generate additional tests for full coverage.