Enum ConfigError 

pub enum ConfigError {
    Validation {
        field: &'static str,
        message: &'static str,
    },
    Environment {
        path: PathBuf,
        source: EnvironmentFileError,
    },
    EnvironmentAlreadyLoaded,
    VariableConflict {
        variable: &'static str,
    },
    VariableMissing {
        variable: String,
    },
    VariableUnicode {
        variable: String,
    },
    VariableValue {
        variable: &'static str,
        message: &'static str,
    },
    VariableFile {
        variable: &'static str,
        source: Error,
    },
}

Error returned while resolving or validating configuration.

Variants

Validation

A parsed or overridden value violates a configuration invariant.

Fields

field: &'static str

Stable dotted field path.

message: &'static str

Value-independent validation explanation.

Environment

An explicit environment file could not be loaded.

Fields

path: PathBuf

File that failed to load.

source: EnvironmentFileError

Sanitized dotenv failure that never retains a parsed line or value.

EnvironmentAlreadyLoaded

The immutable process configuration was already initialized from different files.

VariableConflict

A process variable and its _FILE companion were both supplied.

Fields

variable: &'static str

Base environment-variable name.

VariableMissing

A requested raw environment variable was not supplied.

Fields

variable: String

Environment-variable name.

VariableUnicode

A process variable is not valid Unicode.

Fields

variable: String

Environment-variable name.

VariableValue

A configured value is empty or cannot be parsed into its typed field.

Fields

variable: &'static str

Environment-variable name.

message: &'static str

Value-independent explanation.

VariableFile

A file selected through a _FILE variable could not be read.

Fields

variable: &'static str

Base environment-variable name.

source: Error

Underlying filesystem error.

Trait Implementations

impl Debug for ConfigError

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for ConfigError

fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for ConfigError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.