hypha: move components into separate crates

controller/src/image/name.rs

@@ -0,0 +1,67 @@
+use anyhow::Result;
+use std::fmt;
+use url::Url;
+
+#[derive(Debug, Clone, PartialEq, Eq, Hash)]
+pub struct ImageName {
+    pub hostname: String,
+    pub port: Option<u16>,
+    pub name: String,
+    pub reference: String,
+}
+
+impl fmt::Display for ImageName {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        if let Some(port) = self.port {
+            write!(
+                f,
+                "{}:{}/{}:{}",
+                self.hostname, port, self.name, self.reference
+            )
+        } else {
+            write!(f, "{}/{}:{}", self.hostname, self.name, self.reference)
+        }
+    }
+}
+
+impl Default for ImageName {
+    fn default() -> Self {
+        Self::parse(&format!("{}", uuid::Uuid::new_v4().as_hyphenated()))
+            .expect("UUID hyphenated must be valid name")
+    }
+}
+
+impl ImageName {
+    pub fn parse(name: &str) -> Result<Self> {
+        let (hostname, name) = name
+            .split_once('/')
+            .unwrap_or(("registry-1.docker.io", name));
+        let (hostname, port) = if let Some((hostname, port)) = hostname.split_once(':') {
+            (hostname, Some(str::parse(port)?))
+        } else {
+            (hostname, None)
+        };
+        let (name, reference) = name.split_once(':').unwrap_or((name, "latest"));
+        Ok(ImageName {
+            hostname: hostname.to_string(),
+            port,
+            name: name.to_string(),
+            reference: reference.to_string(),
+        })
+    }
+
+    /// URL for OCI distribution API endpoint
+    pub fn registry_url(&self) -> Result<Url> {
+        let hostname = if let Some(port) = self.port {
+            format!("{}:{}", self.hostname, port)
+        } else {
+            self.hostname.clone()
+        };
+        let url = if self.hostname.starts_with("localhost") {
+            format!("http://{}", hostname)
+        } else {
+            format!("https://{}", hostname)
+        };
+        Ok(Url::parse(&url)?)
+    }
+}