Struct Message 

pub struct Message {
    pub headers: HashMap<String, Value>,
    pub body: Body,
}

A message flowing through the Camel framework.

Fields

headers: HashMap<String, Value>

Raw message headers (metadata) — a raw escape hatch.

Direct writes to this map bypass header-key normalization, so the map may contain several keys that differ only by ASCII case. Readers that need case folding MUST use Message::header_ic instead of indexing this map directly.

body: Body

Message body (payload).

Implementations

impl Message

pub fn new(body: impl Into<Body>) -> Message

Create a new message with the given body.

pub fn header(&self, key: &str) -> Option<&Value>

Get a header value by key, matching the stored key exactly.

pub fn header_ic(&self, key: &str) -> Option<&Value>

Get a header value, matching case-insensitively.

An exact-case entry wins. Without one, the value whose stored key sorts first by byte order among the ASCII case-insensitive matches is returned, so the result does not depend on HashMap iteration order.

pub fn set_header(&mut self, key: impl Into<String>, value: impl Into<Value>)

Set a header value, replacing every ASCII case-insensitive equivalent.

The caller’s spelling is inserted verbatim, so iteration and serialization expose that spelling. This is O(n) in the number of headers.

pub fn set_header_normalized( &mut self, key: impl Into<String>, value: impl Into<Value>, )

Set a header value with a normalized lowercase key.

Every ASCII case-insensitive duplicate is removed before the lowercase key is inserted.

pub fn remove_header(&mut self, key: &str) -> Option<Value>

Remove a header, matching case-insensitively.

Every entry whose key equals key ASCII case-insensitively is removed. Returns the exact-case entry’s value when that entry existed, and None otherwise — including when only case variants were removed.

Trait Implementations

impl Clone for Message

fn clone(&self) -> Message

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Message

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

Formats the value using the given formatter.

impl Default for Message

fn default() -> Message

Returns the “default value” for a type.