server: extract graphql crate

crates/graphql-server/Cargo.toml

@@ -0,0 +1,75 @@
+[package]
+name = "lldap_graphql_server"
+version = "0.1.0"
+description = "GraphQL server for LLDAP"
+edition.workspace = true
+authors.workspace = true
+homepage.workspace = true
+license.workspace = true
+repository.workspace = true
+
+[dependencies]
+anyhow = "*"
+juniper = "0.15"
+serde_json = "1"
+tracing = "*"
+urlencoding = "2"
+
+[dependencies.chrono]
+features = ["serde"]
+version = "*"
+
+[dependencies.lldap_access_control]
+path = "../access-control"
+
+[dependencies.lldap_auth]
+path = "../auth"
+features = ["opaque_server", "opaque_client", "sea_orm"]
+
+[dependencies.lldap_domain]
+path = "../domain"
+
+[dependencies.lldap_domain_model]
+path = "../domain-model"
+
+[dependencies.lldap_domain_handlers]
+path = "../domain-handlers"
+
+[dependencies.lldap_ldap]
+path = "../ldap"
+
+[dependencies.lldap_sql_backend_handler]
+path = "../sql-backend-handler"
+
+[dependencies.lldap_validation]
+path = "../validation"
+
+[dependencies.serde]
+workspace = true
+
+[dependencies.uuid]
+features = ["v1", "v3"]
+version = "1"
+
+[dev-dependencies]
+mockall = "0.11.4"
+pretty_assertions = "1"
+
+#[dev-dependencies.lldap_auth]
+#path = "../auth"
+#features = ["test"]
+#
+#[dev-dependencies.lldap_opaque_handler]
+#path = "../opaque-handler"
+#features = ["test"]
+
+[dev-dependencies.lldap_test_utils]
+path = "../test-utils"
+#
+#[dev-dependencies.lldap_sql_backend_handler]
+#path = "../sql-backend-handler"
+#features = ["test"]
+
+[dev-dependencies.tokio]
+features = ["full"]
+version = "1.25"

crates/graphql-server/src/api.rs

@@ -0,0 +1,91 @@
+use crate::{mutation::Mutation, query::Query};
+use juniper::{EmptySubscription, FieldError, RootNode};
+use lldap_access_control::{
+    AccessControlledBackendHandler, AdminBackendHandler, ReadonlyBackendHandler,
+    UserReadableBackendHandler, UserWriteableBackendHandler,
+};
+use lldap_auth::{access_control::ValidationResults, types::UserId};
+use lldap_domain_handlers::handler::BackendHandler;
+use tracing::debug;
+
+pub struct Context<Handler: BackendHandler> {
+    pub handler: AccessControlledBackendHandler<Handler>,
+    pub validation_result: ValidationResults,
+}
+
+pub fn field_error_callback<'a>(
+    span: &'a tracing::Span,
+    error_message: &'a str,
+) -> impl 'a + FnOnce() -> FieldError {
+    move || {
+        span.in_scope(|| debug!("Unauthorized"));
+        FieldError::from(error_message)
+    }
+}
+
+impl<Handler: BackendHandler> Context<Handler> {
+    #[cfg(test)]
+    pub fn new_for_tests(handler: Handler, validation_result: ValidationResults) -> Self {
+        Self {
+            handler: AccessControlledBackendHandler::new(handler),
+            validation_result,
+        }
+    }
+
+    pub fn get_admin_handler(&self) -> Option<&(impl AdminBackendHandler + use<Handler>)> {
+        self.handler.get_admin_handler(&self.validation_result)
+    }
+
+    pub fn get_readonly_handler(&self) -> Option<&(impl ReadonlyBackendHandler + use<Handler>)> {
+        self.handler.get_readonly_handler(&self.validation_result)
+    }
+
+    pub fn get_writeable_handler(
+        &self,
+        user_id: &UserId,
+    ) -> Option<&(impl UserWriteableBackendHandler + use<Handler>)> {
+        self.handler
+            .get_writeable_handler(&self.validation_result, user_id)
+    }
+
+    pub fn get_readable_handler(
+        &self,
+        user_id: &UserId,
+    ) -> Option<&(impl UserReadableBackendHandler + use<Handler>)> {
+        self.handler
+            .get_readable_handler(&self.validation_result, user_id)
+    }
+}
+
+impl<Handler: BackendHandler> juniper::Context for Context<Handler> {}
+
+type Schema<Handler> =
+    RootNode<'static, Query<Handler>, Mutation<Handler>, EmptySubscription<Context<Handler>>>;
+
+pub fn schema<Handler: BackendHandler>() -> Schema<Handler> {
+    Schema::new(
+        Query::<Handler>::new(),
+        Mutation::<Handler>::new(),
+        EmptySubscription::<Context<Handler>>::new(),
+    )
+}
+
+pub fn export_schema(output_file: Option<String>) -> anyhow::Result<()> {
+    use anyhow::Context;
+    use lldap_sql_backend_handler::SqlBackendHandler;
+    let output = schema::<SqlBackendHandler>().as_schema_language();
+    match output_file {
+        None => println!("{}", output),
+        Some(path) => {
+            use std::fs::File;
+            use std::io::prelude::*;
+            use std::path::Path;
+            let path = Path::new(&path);
+            let mut file =
+                File::create(path).context(format!("unable to open '{}'", path.display()))?;
+            file.write_all(output.as_bytes())
+                .context(format!("unable to write in '{}'", path.display()))?;
+        }
+    }
+    Ok(())
+}

crates/graphql-server/src/lib.rs

@@ -0,0 +1,3 @@
+pub mod api;
+pub mod mutation;
+pub mod query;