Structure of hub_validations class objects

library(hubValidations)

The high level validate_*() family of functions all return a <hub_validations> S3 class object.

Structure of `<hub_validations>` object

A hub_validations object is effectively a list and represents the collected output of the series of checks performed by a higher level validate_*() function.

Each named element of the list contains the result of an individual check and inherits from subclass <hub_check>. The name of each element is the name of the check.

Let’s examine an example output of a model output file validation using validate_submission().

hub_path <- system.file("testhubs/simple", package = "hubValidations")

v <- validate_submission(hub_path,
  file_path = "team1-goodmodel/2022-10-08-team1-goodmodel.csv"
)

str(v, max.level = 1)
#> Classes 'hub_validations', 'list'  hidden list of 20
#>  $ valid_config      :List of 4
#>   ..- attr(*, "class")= chr [1:5] "check_success" "hub_check" "rlang_message" "message" ...
#>  $ file_exists       :List of 4
#>   ..- attr(*, "class")= chr [1:5] "check_success" "hub_check" "rlang_message" "message" ...
#>  $ file_name         :List of 4
#>   ..- attr(*, "class")= chr [1:5] "check_success" "hub_check" "rlang_message" "message" ...
#>  $ file_location     :List of 4
#>   ..- attr(*, "class")= chr [1:5] "check_success" "hub_check" "rlang_message" "message" ...
#>  $ round_id_valid    :List of 4
#>   ..- attr(*, "class")= chr [1:5] "check_success" "hub_check" "rlang_message" "message" ...
#>  $ file_format       :List of 4
#>   ..- attr(*, "class")= chr [1:5] "check_success" "hub_check" "rlang_message" "message" ...
#>  $ metadata_exists   :List of 4
#>   ..- attr(*, "class")= chr [1:5] "check_success" "hub_check" "rlang_message" "message" ...
#>  $ file_read         :List of 4
#>   ..- attr(*, "class")= chr [1:5] "check_success" "hub_check" "rlang_message" "message" ...
#>  $ valid_round_id_col:List of 4
#>   ..- attr(*, "class")= chr [1:5] "check_success" "hub_check" "rlang_message" "message" ...
#>  $ unique_round_id   :List of 4
#>   ..- attr(*, "class")= chr [1:5] "check_success" "hub_check" "rlang_message" "message" ...
#>  $ match_round_id    :List of 4
#>   ..- attr(*, "class")= chr [1:5] "check_success" "hub_check" "rlang_message" "message" ...
#>  $ colnames          :List of 4
#>   ..- attr(*, "class")= chr [1:5] "check_success" "hub_check" "rlang_message" "message" ...
#>  $ col_types         :List of 4
#>   ..- attr(*, "class")= chr [1:5] "check_success" "hub_check" "rlang_message" "message" ...
#>  $ valid_vals        :List of 5
#>   ..- attr(*, "class")= chr [1:5] "check_success" "hub_check" "rlang_message" "message" ...
#>  $ rows_unique       :List of 4
#>   ..- attr(*, "class")= chr [1:5] "check_success" "hub_check" "rlang_message" "message" ...
#>  $ req_vals          :List of 5
#>   ..- attr(*, "class")= chr [1:5] "check_success" "hub_check" "rlang_message" "message" ...
#>  $ value_col_valid   :List of 4
#>   ..- attr(*, "class")= chr [1:5] "check_success" "hub_check" "rlang_message" "message" ...
#>  $ value_col_non_desc:List of 5
#>   ..- attr(*, "class")= chr [1:5] "check_success" "hub_check" "rlang_message" "message" ...
#>  $ value_col_sum1    :List of 4
#>   ..- attr(*, "class")= chr [1:5] "check_info" "hub_check" "rlang_message" "message" ...
#>  $ submission_time   :List of 6
#>   ..- attr(*, "class")= chr [1:5] "check_failure" "hub_check" "rlang_error" "error" ...

The super class returned in each element depends on the status of the check:

If a check succeeds, a <message/check_success> condition class object is returned.
If a check is skipped, a <message/check_info> condition class object is returned.
Checks vary with respect to whether they return an <error/check_failure> or <error/check_error> condition class object if the check fails.
- <error/check_failure> class objects indicate a check that failed but does not affect downstream checks so validation was able to proceed.
- <error/check_error> class objects indicate early termination of the validation process because of failure of a check downstream checks depend on.

Ultimately, both will cause overall validation to fail. The <error/check_error> class exists to alert you to the fact that there may be more errors not yet reported due to early termination of the check process.

`hub_validations` print method

hub_validations objects have their own print method which displays the result, the check name and message of each check:

✔ indicates a check was successful (a <message/check_success> condition class object was returned)
✖ indicates a check failed but, because it does not affect downstream checks, validation was able to proceed (a <error/check_failure> condition class object was returned)
ⓧ indicates a check that downstream checks depend on failed, causing early return of the validation process (a <error/check_error> condition class object was returned)
☒ indicates an execution error occured and the check was not able to complete (a <error/check_exec_error> condition class object was returned). Will cause early return if expected check failure output was a <error/check_error>.
ℹ indicates a check was skipped (a <message/check_info> condition class object was returned)

v
#> 
#> ── simple ────
#> 
#> ✔ [valid_config]: All hub config files are valid.
#> 
#> 
#> ── 2022-10-08-team1-goodmodel.csv ────
#> 
#> 
#> 
#> ✔ [file_exists]: File exists at path
#>   model-output/team1-goodmodel/2022-10-08-team1-goodmodel.csv.
#> ✔ [file_name]: File name "2022-10-08-team1-goodmodel.csv" is valid.
#> ✔ [file_location]: File directory name matches `model_id` metadata in file
#>   name.
#> ✔ [round_id_valid]: `round_id` is valid.
#> ✔ [file_format]: File is accepted hub format.
#> ✔ [metadata_exists]: Metadata file exists at path
#>   model-metadata/team1-goodmodel.yaml.
#> ✔ [file_read]: File could be read successfully.
#> ✔ [valid_round_id_col]: `round_id_col` name is valid.
#> ✔ [unique_round_id]: `round_id` column "origin_date" contains a single, unique
#>   round ID value.
#> ✔ [match_round_id]: All `round_id_col` "origin_date" values match submission
#>   `round_id` from file name.
#> ✔ [colnames]: Column names are consistent with expected round task IDs and std
#>   column names.
#> ✔ [col_types]: Column data types match hub schema.
#> ✔ [valid_vals]: `tbl` contains valid values/value combinations.
#> ✔ [rows_unique]: All combinations of task ID
#>   column/`output_type`/`output_type_id` values are unique.
#> ✔ [req_vals]: Required task ID/output type/output type ID combinations all
#>   present.
#> ✔ [value_col_valid]: Values in column `value` all valid with respect to
#>   modeling task config.
#> ✔ [value_col_non_desc]: Values in `value` column are non-decreasing as
#>   output_type_ids increase for all unique task ID value/output type
#>   combinations of quantile or cdf output types.
#> ℹ [value_col_sum1]: No pmf output types to check for sum of 1. Check skipped.
#> ✖ [submission_time]: Submission time must be within accepted submission window
#>   for round.  Current time "2024-10-24 16:56:24 UTC" is outside window
#>   2022-10-02 EDT--2022-10-09 23:59:59 EDT.

Note that the submission window check is always performed and reported last.

Structure of a `<hub_check>` object

Let’s look more closely at the structure of the first few elements of the hub_validations object retuned by validate_submission()

v <- validate_submission(hub_path,
  file_path = "team1-goodmodel/2022-10-08-team1-goodmodel.csv"
)

str(utils::head(v))
#> List of 6
#>  $ valid_config  :List of 4
#>   ..$ message       : chr "All hub config files are valid. \n "
#>   ..$ where         : chr "simple"
#>   ..$ call          : chr "check_config_hub_valid"
#>   ..$ use_cli_format: logi TRUE
#>   ..- attr(*, "class")= chr [1:5] "check_success" "hub_check" "rlang_message" "message" ...
#>  $ file_exists   :List of 4
#>   ..$ message       : chr "File exists at path \033[34mmodel-output/team1-goodmodel/2022-10-08-team1-goodmodel.csv\033[39m. \n "
#>   ..$ where         : chr "team1-goodmodel/2022-10-08-team1-goodmodel.csv"
#>   ..$ call          : chr "check_file_exists"
#>   ..$ use_cli_format: logi TRUE
#>   ..- attr(*, "class")= chr [1:5] "check_success" "hub_check" "rlang_message" "message" ...
#>  $ file_name     :List of 4
#>   ..$ message       : chr "File name \033[34m\"2022-10-08-team1-goodmodel.csv\"\033[39m is valid. \n "
#>   ..$ where         : chr "team1-goodmodel/2022-10-08-team1-goodmodel.csv"
#>   ..$ call          : chr "check_file_name"
#>   ..$ use_cli_format: logi TRUE
#>   ..- attr(*, "class")= chr [1:5] "check_success" "hub_check" "rlang_message" "message" ...
#>  $ file_location :List of 4
#>   ..$ message       : chr "File directory name matches `model_id`\n                                           metadata in file name. \n "
#>   ..$ where         : chr "team1-goodmodel/2022-10-08-team1-goodmodel.csv"
#>   ..$ call          : chr "check_file_location"
#>   ..$ use_cli_format: logi TRUE
#>   ..- attr(*, "class")= chr [1:5] "check_success" "hub_check" "rlang_message" "message" ...
#>  $ round_id_valid:List of 4
#>   ..$ message       : chr "`round_id` is valid. \n "
#>   ..$ where         : chr "team1-goodmodel/2022-10-08-team1-goodmodel.csv"
#>   ..$ call          : chr "check_valid_round_id"
#>   ..$ use_cli_format: logi TRUE
#>   ..- attr(*, "class")= chr [1:5] "check_success" "hub_check" "rlang_message" "message" ...
#>  $ file_format   :List of 4
#>   ..$ message       : chr "File is accepted hub format. \n "
#>   ..$ where         : chr "team1-goodmodel/2022-10-08-team1-goodmodel.csv"
#>   ..$ call          : chr "check_file_format"
#>   ..$ use_cli_format: logi TRUE
#>   ..- attr(*, "class")= chr [1:5] "check_success" "hub_check" "rlang_message" "message" ...

Each <hub_check> objects contains the following elements:

message: the result message containing details about the check.
where:: there the check was performed, usually the model output file name.
call: the function used to perform the check.
use_cli_format: whether the message is formatted using cli format, almost always TRUE.

Extra information

Some <hub_check> objects contain extra information about the failing check to help identify affected rows in submissions.

For example, the <hub_check> object returned for the valid_vals check, which checks that all columns in a model output file (excluding the value column) contain valid combinations of task ID / output type / output type ID values contains an additional element called error_tbl, with details of the invalid value combinations in the rows affected.

To access error_tbl from the output of validate_submission() stored in an object v, you would use:

v$valid_vals$error_tbl

Structure of <hub_validations> object

hub_validations print method

Structure of a <hub_check> object

Extra information

Structure of `<hub_validations>` object

`hub_validations` print method

Structure of a `<hub_check>` object