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Utilities to list log files generated by CANedge loggers

Project description

CANedge Browser - List Log Files (Local, S3)

This package lets you easily list CANedge CAN data log files. Simply specify the source (local disk or S3 server) and the start/stop period. The listed log files can then be used with other packages such as mdf_iter and can_decoder.


Key features

1. Extract a subset of log files between a start/stop date & time

Installation

Use pip to install the canedge_browser module:

pip install canedge_browser

Dependencies

  • fsspec (required)
  • mdf_iter (required)

Module usage example

In the below example, we list log files between two dates from a MinIO S3 server:

import canedge_browser
import s3fs
from datetime import datetime, timezone

fs = s3fs.S3FileSystem(
    key="<key>",
    secret="<secret>",
    client_kwargs={
        "endpoint_url": "http://address.of.remote.s3.server:9000",
    },
)

devices = ["<bucket>/23AD1AEA", "<bucket>/86373F4D"]
start = datetime(year=2020, month=8, day=4, hour=10, tzinfo=timezone.utc)
stop = datetime(year=2020, month=9, day=9, tzinfo=timezone.utc)

log_files = canedge_browser.get_log_files(fs, devices, start_date=start, stop_date=stop)

print("Found a total of {} log files".format(len(log_files)))
for log_file in log_files:
    print(log_file)


Regarding timezone

NOTE: All time inputs into the library must include a timezone. If in doubt, set this to UTC (+00:00).


Regarding S3 server types

If you need to connect to e.g. an AWS S3 server, simply use the relevant endpoint (e.g. https://s3.amazonaws.com). Similarly, for MinIO servers, you would use the relevant endpoint (e.g. http://192.168.0.1:9000).

HTTP vs. HTTPS

To connect to a MinIO S3 server where TLS is enabled via a self-signed certificate, you can connect by adding the path to your public certificate in the verify field in the setup_fs_s3 function.


Regarding path syntax

Note that all paths are relative to the root /. For POSIX systems, this will likely follow the normal filesystem structure. Windows systems gets a slightly mangled syntax, such that C:\Some folder\a subfolder\the target file.MF4 becomes /C:/Some folder/a subfolder/the target file.MF4.

Project details


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