Enum GmailError 

pub enum GmailError {
    CredentialsNotFound,
    ApiRequestFailed {
        status: u16,
        body: String,
        reason: Option<String>,
    },
    StateMismatch,
    AuthorizationDenied(String),
    CallbackTimeout(u64),
    MalformedCallback,
    InvalidGrant(GrantContext),
    MalformedTokenResponse(&'static str),
    NoGmailScopeGranted(String),
    InvalidBrowserCommand(String),
}

Errors that can occur during Gmail operations.

Variants

CredentialsNotFound

Gmail credentials are not configured.

ApiRequestFailed

A Gmail API request failed.

Fields

status: u16

HTTP status code.

body: String

Response body text (or an extracted error.message/reason summary when the body is Gmail’s JSON error envelope).

reason: Option<String>

The error.errors[0].reason field from Gmail’s JSON error envelope, if the body parsed as that shape. Populated directly by GmailClient::response_to_error — not re-derived from body.

StateMismatch

The OAuth callback’s state did not match the value generated at the start of login.

AuthorizationDenied(String)

Google’s ?error= redirect (e.g. the user clicked “Cancel”).

CallbackTimeout(u64)

No browser callback arrived within the timeout.

MalformedCallback

The browser’s callback request could not be parsed.

InvalidGrant(GrantContext)

Google rejected a code exchange or refresh with invalid_grant.

MalformedTokenResponse(&'static str)

Google’s token response was missing a required field.

NoGmailScopeGranted(String)

Google’s token response carried no Gmail scope at all — e.g. the Gmail permission was left unticked on the consent screen.

InvalidBrowserCommand(String)

The configured browser launch command was invalid.

Trait Implementations

impl Debug for GmailError

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

Formats the value using the given formatter.

impl Display for GmailError

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

Formats the value using the given formatter.

impl Error for GmailError

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.