Enum FrontendMessage 

pub enum FrontendMessage {
    Parse(Parse),
    Bind(Bind),
    Describe(Describe),
    Close(Close),
    Execute(Execute),
    FunctionCall(FunctionCall),
    Query(Bytes),
    Flush,
    Sync,
    Terminate,
    CopyData(Bytes),
    CopyDone,
    CopyFail(Bytes),
    PasswordResponse(Bytes),
}

Frontend messages whose contents a rewriting proxy must retain structurally.

Variants

Parse(Parse)

Defines a prepared statement and its parameter OIDs.

Bind(Bind)

Binds parameters and result formats to a portal.

Describe(Describe)

Requests metadata for a statement or portal.

Close(Close)

Closes a statement or portal.

Execute(Execute)

Executes a bound portal.

FunctionCall(FunctionCall)

Invokes the deprecated function-call protocol.

Query(Bytes)

Executes one or more SQL statements through the simple-query protocol.

Flush

Requests that buffered backend responses be flushed.

Sync

Ends an extended-query pipeline and restores error recovery.

Terminate

Gracefully closes the frontend session.

CopyData(Bytes)

Carries COPY or replication data.

CopyDone

Signals successful completion of a COPY input stream.

CopyFail(Bytes)

Aborts a COPY input stream with a diagnostic message.

PasswordResponse(Bytes)

Context determines whether this is password, GSS, or a SASL response.

Implementations

impl FrontendMessage

pub fn to_frame(&self) -> Result<Frame>

Reconstructs a frontend frame after inspection or modification.

Errors

Returns an error when a structured message contains invalid values.

Trait Implementations

impl Clone for FrontendMessage

fn clone(&self) -> FrontendMessage

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for FrontendMessage

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

Formats the value using the given formatter.

impl Eq for FrontendMessage

impl PartialEq for FrontendMessage

fn eq(&self, other: &FrontendMessage) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for FrontendMessage