google.appengine.api.validation.Exec

Coerces the value to accommodate Docker CMD/ENTRYPOINT requirements.

Inherits From: Type, Validator, expected_type

google.appengine.api.validation.Exec(
    default=None
)

Validates the value is a string, then tries to modify the string (if necessary) so that the command represented will become PID 1 inside the Docker container. See Docker documentation on docker kill for more information: https://docs.docker.com/engine/reference/commandline/kill/.

If the command already starts with exec or appears to be in "exec form" (starts with [), no further action is needed. Otherwise, prepend the command with exec so that it will become PID 1 on execution.

Child Classes

class expected_type

Methods

CheckFieldInitialized

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CheckFieldInitialized(
    value, key, obj
)

Check for missing fields or conflicts between fields.

Default behavior performs a simple None-check, but this can be overridden. If the intent is to allow optional fields, then use the Optional validator instead.

Args
value Value to validate.
key Name of the field being validated.
obj The object to validate against.

Raises
ValidationError When there are missing or conflicting fields.

GetWarnings

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GetWarnings(
    value, key, obj
)

Return any warnings on this attribute.

Validates the value with an eye towards things that aren't fatal problems.

Args
value Value to validate.
key Name of the field being validated.
obj The object to validate against.

Returns
A list of tuples (context, warning) where

  • Context is the field (or dotted field path, if a sub-field)
  • Warning is the string warning text

ToValue

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ToValue(
    value
)

Convert value to a simplified collection or basic type.

Subclasses of Validator should override this method when the dumped representation of value is not a simple <type>(value) (e.g., a regex).

Args
value An object of the same type that was returned from Validate().

Returns
An instance of a builtin type (e.g., int, str, dict, etc). By default it returns value unmodified.

Validate

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Validate(
    value, key
)

Validate according to parent behavior and coerce to start with exec.

__call__

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__call__(
    value, key='???'
)

Main interface to validator is call mechanism.