Return support for the humantime::Duration wrapper

poem-openapi/src/types/external/humantime_wrapper.rs

@@ -0,0 +1,78 @@
+use std::borrow::Cow;
+
+use humantime::Duration;
+use poem::{http::HeaderValue, web::Field};
+use serde_json::Value;
+
+use crate::{
+    registry::{MetaSchema, MetaSchemaRef},
+    types::{
+        ParseError, ParseFromJSON, ParseFromMultipartField, ParseFromParameter, ParseResult,
+        ToHeader, ToJSON, Type,
+    },
+};
+
+impl Type for Duration {
+    const IS_REQUIRED: bool = true;
+
+    type RawValueType = Self;
+
+    type RawElementValueType = Self;
+
+    fn name() -> Cow<'static, str> {
+        "string(duration)".into()
+    }
+
+    fn schema_ref() -> MetaSchemaRef {
+        MetaSchemaRef::Inline(Box::new(MetaSchema::new_with_format("string", "duration")))
+    }
+
+    fn as_raw_value(&self) -> Option<&Self::RawValueType> {
+        Some(self)
+    }
+
+    fn raw_element_iter<'a>(
+        &'a self,
+    ) -> Box<dyn Iterator<Item = &'a Self::RawElementValueType> + 'a> {
+        Box::new(self.as_raw_value().into_iter())
+    }
+}
+
+impl ParseFromJSON for Duration {
+    fn parse_from_json(value: Option<Value>) -> ParseResult<Self> {
+        let value = value.unwrap_or_default();
+        if let Value::String(value) = value {
+            Ok(value.parse()?)
+        } else {
+            Err(ParseError::expected_type(value))
+        }
+    }
+}
+
+impl ParseFromParameter for Duration {
+    fn parse_from_parameter(value: &str) -> ParseResult<Self> {
+        value.parse().map_err(ParseError::custom)
+    }
+}
+
+#[poem::async_trait]
+impl ParseFromMultipartField for Duration {
+    async fn parse_from_multipart(field: Option<Field>) -> ParseResult<Self> {
+        match field {
+            Some(field) => Ok(field.text().await?.parse()?),
+            None => Err(ParseError::expected_input()),
+        }
+    }
+}
+
+impl ToJSON for Duration {
+    fn to_json(&self) -> Option<Value> {
+        Some(Value::String(self.to_string()))
+    }
+}
+
+impl ToHeader for Duration {
+    fn to_header(&self) -> Option<HeaderValue> {
+        HeaderValue::from_str(&self.to_string()).ok()
+    }
+}

poem-openapi/src/types/external/mod.rs

@@ -16,6 +16,8 @@ mod hashmap;
 mod hashset;
 #[cfg(feature = "humantime")]
 mod humantime;
+#[cfg(feature = "humantime")]
+mod humantime_wrapper;
 mod integers;
 mod ip;
 mod optional;