first take at form data

README.md

@@ -36,7 +36,7 @@ You'll need to add the following to `Cargo.toml`:
 [dependencies]
 +futures = "0.3"
 +progenitor = { git = "https://github.com/oxidecomputer/progenitor" }
-+reqwest = { version = "0.11", features = ["json", "stream"] }
++reqwest = { version = "0.11", features = ["json", "stream", "multipart"] }
 +serde = { version = "1.0", features = ["derive"] }
 ```
 
@@ -123,7 +123,7 @@ You'll need to add the following to `Cargo.toml`:
 [dependencies]
 +futures = "0.3"
 +progenitor-client = { git = "https://github.com/oxidecomputer/progenitor" }
-+reqwest = { version = "0.11", features = ["json", "stream"] }
++reqwest = { version = "0.11", features = ["json", "stream", "multipart"] }
 +serde = { version = "1.0", features = ["derive"] }
 
 [build-dependencies]
@@ -180,7 +180,7 @@ bytes = "1.3.0"
 chrono = { version = "0.4.23", default-features=false, features = ["serde"] }
 futures-core = "0.3.25"
 percent-encoding = "2.2.0"
-reqwest = { version = "0.11.13", default-features=false, features = ["json", "stream"] }
+reqwest = { version = "0.11.13", default-features=false, features = ["json", "stream", "multipart"] }
 serde = { version = "1.0.152", features = ["derive"] }
 serde_urlencoded = "0.7.1"
 

example-build/Cargo.toml

@@ -7,7 +7,7 @@ edition = "2021"
 [dependencies]
 chrono = { version = "0.4", features = ["serde"] }
 progenitor-client = { path = "../progenitor-client" }
-reqwest = { version = "0.11.16", features = ["json", "stream"] }
+reqwest = { version = "0.11.16", features = ["json", "stream", "multipart"] }
 base64 = "0.21"
 rand = "0.8"
 serde = { version = "1.0", features = ["derive"] }

example-macro/Cargo.toml

@@ -7,7 +7,7 @@ edition = "2021"
 [dependencies]
 chrono = { version = "0.4", features = ["serde"] }
 progenitor = { path = "../progenitor" }
-reqwest = { version = "0.11.16", features = ["json", "stream"] }
+reqwest = { version = "0.11.16", features = ["json", "stream", "multipart"] }
 schemars = { version = "0.8.12", features = ["uuid1"] }
 serde = { version = "1.0", features = ["derive"] }
 uuid = { version = "1.3", features = ["serde", "v4"] }

progenitor-client/Cargo.toml

@@ -10,7 +10,7 @@ description = "An OpenAPI client generator - client support"
 bytes = "1.4.0"
 futures-core = "0.3.27"
 percent-encoding = "2.2"
-reqwest = { version = "0.11.16", default-features = false, features = ["json", "stream"] }
+reqwest = { version = "0.11.16", default-features = false, features = ["json", "stream", "multipart"] }
 serde = "1.0"
 serde_json = "1.0"
 serde_urlencoded = "0.7.1"

progenitor-client/src/progenitor_client.rs

@@ -386,11 +386,23 @@ pub fn encode_path(pc: &str) -> String {
 }
 
 #[doc(hidden)]
-pub trait RequestBuilderExt<E> {
+pub trait RequestBuilderExt<E>
+where
+    Self: Sized,
+{
     fn form_urlencoded<T: Serialize + ?Sized>(
         self,
         body: &T,
     ) -> Result<RequestBuilder, Error<E>>;
+
+    fn form_from_raw<
+        S: AsRef<str>,
+        T: AsRef<[u8]>,
+        I: Sized + IntoIterator<Item = (S, T)>,
+    >(
+        self,
+        iter: I,
+    ) -> Result<Self, Error<E>>;
 }
 
 impl<E> RequestBuilderExt<E> for RequestBuilder {
@@ -405,8 +417,37 @@ impl<E> RequestBuilderExt<E> for RequestBuilder {
                     "application/x-www-form-urlencoded",
                 ),
             )
-            .body(serde_urlencoded::to_string(body).map_err(|_| {
-                Error::InvalidRequest("failed to serialize body".to_string())
+            .body(serde_urlencoded::to_string(body).map_err(|e| {
+                Error::InvalidRequest(format!(
+                    "failed to serialize body: {e:?}"
+                ))
             })?))
     }
+
+    fn form_from_raw<
+        S: AsRef<str>,
+        T: AsRef<[u8]>,
+        I: Sized + IntoIterator<Item = (S, T)>,
+    >(
+        self,
+        mut iter: I,
+    ) -> Result<Self, Error<E>> {
+        use reqwest::multipart::{Form, Part};
+
+        let mut form = Form::new();
+        for (name, value) in iter {
+            form = form.part(
+                name.as_ref().to_owned(),
+                Part::stream(Vec::from(value.as_ref())),
+            );
+        }
+        Ok(self
+            .header(
+                reqwest::header::CONTENT_TYPE,
+                reqwest::header::HeaderValue::from_static(
+                    "multipart/form-data",
+                ),
+            )
+            .multipart(form))
+    }
 }

progenitor-impl/Cargo.toml

@@ -11,6 +11,7 @@ readme = "../README.md"
 heck = "0.4.1"
 getopts = "0.2"
 indexmap = "1.9"
+itertools = "0.10"
 openapiv3 = "1.0.0"
 proc-macro2 = "1.0"
 quote = "1.0"