fallback {duckplyr}

Fallback to dplyr

Description

The duckplyr package aims at providing a fully compatible drop-in replacement for dplyr. To achieve this, only a carefully selected subset of dplyr's operations, R functions, and R data types are implemented. Whenever duckplyr encounters an incompatibility, it falls back to dplyr.

To assist future development, the fallback situations can be logged to the console or to a local file and uploaded for analysis. By default, duckplyr will not log or upload anything. The functions and environment variables on this page control the process.

fallback_sitrep() prints the current settings for fallback logging and uploading, the number of reports ready for upload, and the location of the logs.

fallback_review() prints the available reports for review to the console.

fallback_upload() uploads the available reports to a central server for analysis. The server is hosted on AWS and the reports are stored in a private S3 bucket. Only authorized personnel have access to the reports.

fallback_purge() deletes some or all available reports.

Usage

fallback_sitrep()

fallback_review(oldest = NULL, newest = NULL, detail = TRUE)

fallback_upload(oldest = NULL, newest = NULL, strict = TRUE)

fallback_purge(oldest = NULL, newest = NULL)

Arguments

oldest, newest

The number of oldest or newest reports to review. If not specified, all reports are dispayed.

detail

Print the full content of the reports. Set to FALSE to only print the file names.

strict

If TRUE, the function aborts if any of the reports fail to upload. With FALSE, only a message is printed.

Details

Logging and uploading are both opt-in. By default, for logging, a message is printed to the console for the first time in a session and then once every 8 hours.

The following environment variables control the logging and uploading:

• DUCKPLYR_FALLBACK_COLLECT controls logging, set it to 1 or greater to enable logging. If the value is 0, logging is disabled. Future versions of duckplyr may start logging additional data and thus require a higher value to enable logging. Set to 99 to enable logging for all future versions. Use usethis::edit_r_environ() to edit the environment file.

• DUCKPLYR_FALLBACK_VERBOSE controls printing, set it to TRUE or FALSE to enable or disable printing. If the value is TRUE, a message is printed to the console for each fallback situation. This setting is only relevant if logging is enabled.

• DUCKPLYR_FALLBACK_AUTOUPLOAD controls uploading, set it to 1 or greater to enable uploading. If the value is 0, uploading is disabled. Currently, uploading is active if the value is 1 or greater. Future versions of duckplyr may start logging additional data and thus require a higher value to enable uploading. Set to 99 to enable uploading for all future versions. Use usethis::edit_r_environ() to edit the environment file.

• DUCKPLYR_FALLBACK_LOG_DIR controls the location of the logs. It must point to a directory (existing or not) where the logs will be written. By default, logs are written to a directory in the user's cache directory as returned by tools::R_user_dir("duckplyr", "cache").

All code related to fallback logging and uploading is in the fallback.R and telemetry.R files.

Examples

fallback_sitrep()