Fabric support

daedalus/src/fabric.rs

@@ -0,0 +1,132 @@
+use crate::minecraft::{Argument, ArgumentType, Library, VersionInfo, VersionType};
+use crate::{download_file, Error};
+use chrono::{DateTime, Utc};
+use serde::{Deserialize, Serialize};
+use std::collections::HashMap;
+
+/// The latest version of the format the model structs deserialize to
+pub const CURRENT_FORMAT_VERSION: usize = 0;
+
+#[derive(Serialize, Deserialize, Debug)]
+#[serde(rename_all = "camelCase")]
+/// A partial version returned by fabric meta
+pub struct PartialVersionInfo {
+    /// The version ID of the version
+    pub id: String,
+    /// The version ID this partial version inherits from
+    pub inherits_from: String,
+    /// The time that the version was released
+    pub release_time: DateTime<Utc>,
+    /// The latest time a file in this version was updated
+    pub time: DateTime<Utc>,
+    /// The classpath to the main class to launch the game
+    pub main_class: String,
+    /// Arguments passed to the game or JVM
+    pub arguments: Option<HashMap<ArgumentType, Vec<Argument>>>,
+    /// Libraries that the version depends on
+    pub libraries: Vec<Library>,
+    #[serde(rename = "type")]
+    /// The type of version
+    pub type_: VersionType,
+}
+
+/// Merges a partial version into a complete one
+pub fn merge_partial_version(partial: PartialVersionInfo, merge: VersionInfo) -> VersionInfo {
+    VersionInfo {
+        arguments: if let Some(partial_args) = partial.arguments {
+            if let Some(merge_args) = merge.arguments {
+                Some(partial_args.into_iter().chain(merge_args).collect())
+            } else {
+                Some(partial_args)
+            }
+        } else {
+            merge.arguments
+        },
+        asset_index: merge.asset_index,
+        assets: merge.assets,
+        downloads: merge.downloads,
+        id: merge.id,
+        libraries: partial
+            .libraries
+            .into_iter()
+            .chain(merge.libraries)
+            .collect::<Vec<_>>(),
+        main_class: partial.main_class,
+        minecraft_arguments: merge.minecraft_arguments,
+        minimum_launcher_version: merge.minimum_launcher_version,
+        release_time: partial.release_time,
+        time: partial.time,
+        type_: partial.type_,
+    }
+}
+
+/// The default servers for fabric meta
+pub const FABRIC_META_URL: &str = "https://meta.fabricmc.net/v2";
+
+/// Fetches the manifest of a fabric loader version and game version
+pub async fn fetch_fabric_version(
+    version_number: &str,
+    loader_version: &str,
+) -> Result<PartialVersionInfo, Error> {
+    Ok(serde_json::from_slice(
+        &download_file(
+            &*format!(
+                "{}/versions/loader/{}/{}/profile/json",
+                FABRIC_META_URL, version_number, loader_version
+            ),
+            None,
+        )
+        .await?,
+    )?)
+}
+
+/// Fetches the manifest of a game version's URL
+pub async fn fetch_fabric_game_version(url: &str) -> Result<PartialVersionInfo, Error> {
+    Ok(serde_json::from_slice(&download_file(url, None).await?)?)
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+/// Versions of fabric components
+pub struct FabricVersions {
+    /// Versions of Minecraft that fabric supports
+    pub game: Vec<FabricGameVersion>,
+    /// Available versions of the fabric loader
+    pub loader: Vec<FabricLoaderVersion>,
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+/// A version of Minecraft that fabric supports
+pub struct FabricGameVersion {
+    /// The version number of the game
+    pub version: String,
+    /// Whether the Minecraft version is stable or not
+    pub stable: bool,
+    /// (Modrinth Provided) The URLs to download this version's profile with a loader
+    ///  The key of the map is the loader version, and the value is the URL
+    pub urls: Option<HashMap<String, String>>,
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+/// A version of the fabric loader
+pub struct FabricLoaderVersion {
+    /// The separator to get the build number
+    pub separator: String,
+    /// The build number
+    pub build: u32,
+    /// The maven artifact
+    pub maven: String,
+    /// The version number of the fabric loader
+    pub version: String,
+    /// Whether the loader is stable or not
+    pub stable: bool,
+}
+/// Fetches the list of fabric versions
+pub async fn fetch_fabric_versions(url: Option<&str>) -> Result<FabricVersions, Error> {
+    Ok(serde_json::from_slice(
+        &download_file(
+            url.unwrap_or(&*format!("{}/versions", FABRIC_META_URL)),
+            None,
+        )
+        .await?,
+    )?)
+}

daedalus/src/lib.rs

@@ -4,6 +4,8 @@
 
 #![warn(missing_docs, unused_import_braces, missing_debug_implementations)]
 
+/// Models and methods for fetching metadata for the Fabric mod loader
+pub mod fabric;
 /// Models and methods for fetching metadata for Minecraft
 pub mod minecraft;
 
@@ -34,6 +36,32 @@ pub enum Error {
     /// There was an error when managing async tasks
     #[error("Error while managing asynchronous tasks")]
     TaskError(#[from] tokio::task::JoinError),
+    /// Error while parsing input
+    #[error("{0}")]
+    ParseError(String),
+}
+
+/// Converts a maven artifact to a path
+pub fn get_path_from_artifact(artifact: &str) -> Result<String, Error> {
+    let name_items = artifact.split(':').collect::<Vec<&str>>();
+
+    let package = name_items.get(0).ok_or_else(|| {
+        Error::ParseError(format!("Unable to find package for library {}", &artifact))
+    })?;
+    let name = name_items.get(1).ok_or_else(|| {
+        Error::ParseError(format!("Unable to find name for library {}", &artifact))
+    })?;
+    let version = name_items.get(2).ok_or_else(|| {
+        Error::ParseError(format!("Unable to find version for library {}", &artifact))
+    })?;
+
+    Ok(format!(
+        "{}/{}/{}-{}.jar",
+        package.replace(".", "/"),
+        version,
+        name,
+        version
+    ))
 }
 
 /// Downloads a file with retry and checksum functionality

daedalus/src/minecraft.rs

@@ -69,7 +69,7 @@ pub struct LatestVersion {
 }
 
 #[derive(Serialize, Deserialize, Debug, Clone)]
-/// Data of all game versions of Minecraft
+/// Data of all game versions of Minecrafat
 pub struct VersionManifest {
     /// A struct containing the latest snapshot and release of the game
     pub latest: LatestVersion,
@@ -181,10 +181,13 @@ pub enum Os {
 #[derive(Serialize, Deserialize, Debug)]
 /// A rule which depends on what OS the user is on
 pub struct OsRule {
+    #[serde(skip_serializing_if = "Option::is_none")]
     /// The name of the OS
     pub name: Option<Os>,
+    #[serde(skip_serializing_if = "Option::is_none")]
     /// The version of the OS. This is normally a RegEx
     pub version: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
     /// The architecture of the OS
     pub arch: Option<String>,
 }
@@ -192,8 +195,10 @@ pub struct OsRule {
 #[derive(Serialize, Deserialize, Debug)]
 /// A rule which depends on the toggled features of the launcher
 pub struct FeatureRule {
+    #[serde(skip_serializing_if = "Option::is_none")]
     /// Whether the user is in demo mode
     pub is_demo_user: Option<bool>,
+    #[serde(skip_serializing_if = "Option::is_none")]
     /// Whether the user is using the demo resolution
     pub has_demo_resolution: Option<bool>,
 }
@@ -203,8 +208,10 @@ pub struct FeatureRule {
 pub struct Rule {
     /// The action the rule takes
     pub action: RuleAction,
+    #[serde(skip_serializing_if = "Option::is_none")]
     /// The OS rule
     pub os: Option<OsRule>,
+    #[serde(skip_serializing_if = "Option::is_none")]
     /// The feature rule
     pub features: Option<FeatureRule>,
 }
@@ -212,6 +219,7 @@ pub struct Rule {
 #[derive(Serialize, Deserialize, Debug)]
 /// Information delegating the extraction of the library
 pub struct LibraryExtract {
+    #[serde(skip_serializing_if = "Option::is_none")]
     /// Files/Folders to be excluded from the extraction of the library
     pub exclude: Option<Vec<String>>,
 }
@@ -219,14 +227,21 @@ pub struct LibraryExtract {
 #[derive(Serialize, Deserialize, Debug)]
 /// A library which the game relies on to run
 pub struct Library {
+    #[serde(skip_serializing_if = "Option::is_none")]
     /// The files the library has
-    pub downloads: LibraryDownloads,
+    pub downloads: Option<LibraryDownloads>,
+    #[serde(skip_serializing_if = "Option::is_none")]
     /// Rules of the extraction of the file
     pub extract: Option<LibraryExtract>,
     /// The maven name of the library. The format is `groupId:artifactId:version`
     pub name: String,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    /// The URL to the repository where the library can be downloaded
+    pub url: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
     /// Native files that the library relies on
     pub natives: Option<HashMap<Os, String>>,
+    #[serde(skip_serializing_if = "Option::is_none")]
     /// Rules deciding whether the library should be downloaded or not
     pub rules: Option<Vec<Rule>>,
 }
@@ -270,6 +285,7 @@ pub enum ArgumentType {
 #[serde(rename_all = "camelCase")]
 /// Information about a version
 pub struct VersionInfo {
+    #[serde(skip_serializing_if = "Option::is_none")]
     /// Arguments passed to the game or JVM
     pub arguments: Option<HashMap<ArgumentType, Vec<Argument>>>,
     /// Assets for the game
@@ -284,6 +300,7 @@ pub struct VersionInfo {
     pub libraries: Vec<Library>,
     /// The classpath to the main class to launch the game
     pub main_class: String,
+    #[serde(skip_serializing_if = "Option::is_none")]
     /// (Legacy) Arguments passed to the game
     pub minecraft_arguments: Option<String>,
     /// The minimum version of the Minecraft Launcher that can run this version of the game

daedalus_client/src/fabric.rs

@@ -0,0 +1,188 @@
+use crate::{format_url, upload_file_to_bucket, Error};
+use daedalus::fabric::PartialVersionInfo;
+use daedalus::minecraft::Library;
+use std::collections::HashMap;
+use std::sync::{Arc, Mutex, RwLock};
+use std::time::{Duration, Instant};
+
+pub async fn retrieve_data() -> Result<(), Error> {
+    let mut list = daedalus::fabric::fetch_fabric_versions(None).await?;
+
+    let loaders = RwLock::new(Vec::new());
+    let visited_artifacts_mutex = Arc::new(Mutex::new(Vec::new()));
+
+    if let Some(latest) = list.loader.get(0) {
+        {
+            let mut loaders = match loaders.write() {
+                Ok(guard) => guard,
+                Err(poisoned) => poisoned.into_inner(),
+            };
+
+            loaders.push(latest.version.clone());
+
+            if !latest.stable {
+                if let Some(stable) = list.loader.iter().find(|x| x.stable) {
+                    loaders.push(stable.version.clone());
+                }
+            }
+
+            list.loader = list
+                .loader
+                .into_iter()
+                .filter(|x| loaders.contains(&x.version))
+                .collect();
+        }
+
+        let mut versions = list
+            .game
+            .iter_mut()
+            .map(|game_version| {
+                let loaders = match loaders.read() {
+                    Ok(guard) => guard,
+                    Err(poisoned) => poisoned.into_inner(),
+                };
+
+                let visited_artifacts_mutex = Arc::clone(&visited_artifacts_mutex);
+                let game_version_mutex = Mutex::new(HashMap::new());
+
+                async move {
+                    let versions = futures::future::try_join_all(loaders.clone().into_iter().map(
+                        |loader| async {
+                            let version = daedalus::fabric::fetch_fabric_version(
+                                &*game_version.version,
+                                &*loader,
+                            )
+                            .await
+                            .expect(&*format!("{}, {}", game_version.version, loader));
+
+                            Ok::<(String, PartialVersionInfo), Error>((loader, version))
+                        },
+                    ))
+                    .await?;
+
+                    futures::future::try_join_all(versions.into_iter().map(
+                        |(loader, version)| async {
+                            let libs = futures::future::try_join_all(
+                                version.libraries.into_iter().map(|mut lib| async {
+                                    {
+                                        let mut visited_assets =
+                                            match visited_artifacts_mutex.lock() {
+                                                Ok(guard) => guard,
+                                                Err(poisoned) => poisoned.into_inner(),
+                                            };
+
+                                        if visited_assets.contains(&lib.name) {
+                                            lib.url = Some(format_url("maven/"));
+
+                                            return Ok(lib);
+                                        } else {
+                                            visited_assets.push(lib.name.clone())
+                                        }
+                                    }
+
+                                    let artifact_path =
+                                        daedalus::get_path_from_artifact(&*lib.name)?;
+
+                                    let artifact = daedalus::download_file(
+                                        &*format!(
+                                            "{}{}",
+                                            lib.url.unwrap_or_else(|| {
+                                                "https://maven.fabricmc.net/".to_string()
+                                            }),
+                                            artifact_path
+                                        ),
+                                        None,
+                                    )
+                                    .await?;
+
+                                    lib.url = Some(format_url("maven/"));
+
+                                    upload_file_to_bucket(
+                                        format!("{}/{}", "maven", artifact_path),
+                                        artifact.to_vec(),
+                                        Some("application/java-archive".to_string()),
+                                    )
+                                    .await?;
+
+                                    Ok::<Library, Error>(lib)
+                                }),
+                            )
+                            .await?;
+
+                            let version_path = format!(
+                                "fabric/v{}/versions/{}-{}.json",
+                                daedalus::fabric::CURRENT_FORMAT_VERSION,
+                                version.inherits_from,
+                                loader
+                            );
+
+                            upload_file_to_bucket(
+                                version_path.clone(),
+                                serde_json::to_vec(&PartialVersionInfo {
+                                    arguments: version.arguments,
+                                    id: version.id,
+                                    main_class: version.main_class,
+                                    release_time: version.release_time,
+                                    time: version.time,
+                                    type_: version.type_,
+                                    inherits_from: version.inherits_from,
+                                    libraries: libs,
+                                })?,
+                                Some("application/json".to_string()),
+                            )
+                            .await?;
+
+                            {
+                                let mut game_version_map = match game_version_mutex.lock() {
+                                    Ok(guard) => guard,
+                                    Err(poisoned) => poisoned.into_inner(),
+                                };
+                                game_version_map.insert(loader, format_url(&*version_path));
+                            }
+
+                            Ok::<(), Error>(())
+                        },
+                    ))
+                    .await?;
+
+                    game_version.urls = Some(
+                        match game_version_mutex.lock() {
+                            Ok(guard) => guard,
+                            Err(poisoned) => poisoned.into_inner(),
+                        }
+                        .clone(),
+                    );
+
+                    Ok::<(), Error>(())
+                }
+            })
+            .peekable();
+
+        let mut chunk_index = 0;
+        while versions.peek().is_some() {
+            let now = Instant::now();
+
+            let chunk: Vec<_> = versions.by_ref().take(10).collect();
+            futures::future::try_join_all(chunk).await?;
+
+            std::thread::sleep(Duration::from_secs(1));
+
+            chunk_index += 1;
+
+            let elapsed = now.elapsed();
+            println!("Chunk {} Elapsed: {:.2?}", chunk_index, elapsed);
+        }
+    }
+
+    upload_file_to_bucket(
+        format!(
+            "fabric/v{}/manifest.json",
+            daedalus::fabric::CURRENT_FORMAT_VERSION,
+        ),
+        serde_json::to_vec(&list)?,
+        Some("application/json".to_string()),
+    )
+    .await?;
+
+    Ok(())
+}

daedalus_client/src/main.rs

@@ -1,9 +1,10 @@
 use log::{error, info, warn};
 use rusoto_core::credential::StaticProvider;
 use rusoto_core::{HttpClient, Region, RusotoError};
-use rusoto_s3::{S3Client, PutObjectError};
+use rusoto_s3::{PutObjectError, S3Client};
 use rusoto_s3::{PutObjectRequest, S3};
 
+mod fabric;
 mod minecraft;
 
 #[derive(thiserror::Error, Debug)]
@@ -13,10 +14,7 @@ pub enum Error {
     #[error("Error while deserializing JSON")]
     SerdeError(#[from] serde_json::Error),
     #[error("Unable to fetch {item}")]
-    FetchError {
-        inner: reqwest::Error,
-        item: String,
-    },
+    FetchError { inner: reqwest::Error, item: String },
     #[error("Error while managing asynchronous tasks")]
     TaskError(#[from] tokio::task::JoinError),
     #[error("Error while uploading file to S3")]
@@ -34,7 +32,7 @@ async fn main() {
         return;
     }
 
-    minecraft::retrieve_data().await.unwrap();
+    fabric::retrieve_data().await.unwrap();
 }
 
 fn check_env_vars() -> bool {
@@ -96,7 +94,11 @@ lazy_static::lazy_static! {
         );
 }
 
-pub async fn upload_file_to_bucket(path: String, bytes: Vec<u8>, content_type: Option<String>) -> Result<(), Error> {
+pub async fn upload_file_to_bucket(
+    path: String,
+    bytes: Vec<u8>,
+    content_type: Option<String>,
+) -> Result<(), Error> {
     CLIENT
         .put_object(PutObjectRequest {
             bucket: dotenv::var("S3_BUCKET_NAME").unwrap(),
@@ -109,7 +111,7 @@ pub async fn upload_file_to_bucket(path: String, bytes: Vec<u8>, content_type: O
         .await
         .map_err(|err| Error::S3Error {
             inner: err,
-            file: format!("{}/{}", &*dotenv::var("BASE_FOLDER").unwrap(), path)
+            file: format!("{}/{}", &*dotenv::var("BASE_FOLDER").unwrap(), path),
         })?;
 
     Ok(())

daedalus_client/src/minecraft.rs

@@ -6,14 +6,13 @@ use std::time::{Duration, Instant};
 pub async fn retrieve_data() -> Result<(), Error> {
     let old_manifest =
         daedalus::minecraft::fetch_version_manifest(Some(&*crate::format_url(&*format!(
-            "minecraft/v{}/version_manifest.json",
+            "minecraft/v{}/manifest.json",
             daedalus::minecraft::CURRENT_FORMAT_VERSION
         ))))
         .await
         .ok();
 
-    let mut manifest = daedalus::minecraft::fetch_version_manifest(None)
-        .await?;
+    let mut manifest = daedalus::minecraft::fetch_version_manifest(None).await?;
     let cloned_manifest = Arc::new(Mutex::new(manifest.clone()));
 
     let visited_assets_mutex = Arc::new(Mutex::new(Vec::new()));
@@ -44,12 +43,7 @@ pub async fn retrieve_data() -> Result<(), Error> {
             async move {
                 let mut upload_futures = Vec::new();
 
-                let now = Instant::now();
-                let mut version_println = daedalus::minecraft::fetch_version_info(version)
-                    .await
-                    ?;
-                let elapsed = now.elapsed();
-                println!("Version {} Elapsed: {:.2?}", version.id, elapsed);
+                let mut version_info = daedalus::minecraft::fetch_version_info(version).await?;
 
                 let version_path = format!(
                     "minecraft/v{}/versions/{}.json",
@@ -59,9 +53,9 @@ pub async fn retrieve_data() -> Result<(), Error> {
                 let assets_path = format!(
                     "minecraft/v{}/assets/{}.json",
                     daedalus::minecraft::CURRENT_FORMAT_VERSION,
-                    version_println.asset_index.id
+                    version_info.asset_index.id
                 );
-                let assets_index_url = version_println.asset_index.url.clone();
+                let assets_index_url = version_info.asset_index.url.clone();
 
                 {
                     let mut cloned_manifest = match cloned_manifest_mutex.lock() {
@@ -76,10 +70,10 @@ pub async fn retrieve_data() -> Result<(), Error> {
                         .unwrap();
                     cloned_manifest.versions[position].url = format_url(&version_path);
                     cloned_manifest.versions[position].assets_index_sha1 =
-                        Some(version_println.asset_index.sha1.clone());
+                        Some(version_info.asset_index.sha1.clone());
                     cloned_manifest.versions[position].assets_index_url =
                         Some(format_url(&assets_path));
-                    version_println.asset_index.url = format_url(&assets_path);
+                    version_info.asset_index.url = format_url(&assets_path);
                 }
 
                 let mut download_assets = false;
@@ -90,9 +84,9 @@ pub async fn retrieve_data() -> Result<(), Error> {
                         Err(poisoned) => poisoned.into_inner(),
                     };
 
-                    if !visited_assets.contains(&version_println.asset_index.id) {
+                    if !visited_assets.contains(&version_info.asset_index.id) {
                         if let Some(assets_hash) = assets_hash {
-                            if version_println.asset_index.sha1 != assets_hash {
+                            if version_info.asset_index.sha1 != assets_hash {
                                 download_assets = true;
                             }
                         } else {
@@ -101,26 +95,29 @@ pub async fn retrieve_data() -> Result<(), Error> {
                     }
 
                     if download_assets {
-                        visited_assets.push(version_println.asset_index.id.clone());
+                        visited_assets.push(version_info.asset_index.id.clone());
                     }
                 }
 
                 if download_assets {
                     let assets_index =
-                        download_file(&assets_index_url, Some(&version_println.asset_index.sha1))
+                        download_file(&assets_index_url, Some(&version_info.asset_index.sha1))
                             .await?;
 
                     {
-                        upload_futures
-                            .push(upload_file_to_bucket(assets_path, assets_index.to_vec(), Some("application/json".to_string())));
+                        upload_futures.push(upload_file_to_bucket(
+                            assets_path,
+                            assets_index.to_vec(),
+                            Some("application/json".to_string()),
+                        ));
                     }
                 }
 
                 {
                     upload_futures.push(upload_file_to_bucket(
                         version_path,
-                        serde_json::to_vec(&version_println)?,
-                        Some("application/json".to_string())
+                        serde_json::to_vec(&version_info)?,
+                        Some("application/json".to_string()),
                     ));
                 }
 
@@ -154,14 +151,14 @@ pub async fn retrieve_data() -> Result<(), Error> {
 
     upload_file_to_bucket(
         format!(
-            "minecraft/v{}/version_manifest.json",
+            "minecraft/v{}/manifest.json",
             daedalus::minecraft::CURRENT_FORMAT_VERSION
         ),
         serde_json::to_vec(&*match cloned_manifest.lock() {
             Ok(guard) => guard,
             Err(poisoned) => poisoned.into_inner(),
         })?,
-        Some("application/json".to_string())
+        Some("application/json".to_string()),
     )
     .await?;