1 files changed, 65 insertions, 0 deletions
diff --git a/app/src/main/java/com/wireguard/android/configStore/ConfigStore.java b/app/src/main/java/com/wireguard/android/configStore/ConfigStore.java
new file mode 100644
index 00000000..19bb6bf5
--- /dev/null
+++ b/app/src/main/java/com/wireguard/android/configStore/ConfigStore.java
@@ -0,0 +1,65 @@
+package com.wireguard.android.configStore;
+
+import com.wireguard.config.Config;
+
+import java.util.Set;
+
+import java9.util.concurrent.CompletionStage;
+
+/**
+ * Interface for persistent storage providers for WireGuard configurations.
+ */
+
+public interface ConfigStore {
+    /**
+     * Create a persistent tunnel, which must have a unique name within the persistent storage
+     * medium.
+     *
+     * @param name   The name of the tunnel to create.
+     * @param config Configuration for the new tunnel.
+     * @return A future completed when the tunnel and its configuration have been saved to
+     * persistent storage. This future encapsulates the configuration that was actually saved to
+     * persistent storage. This future will always be completed on the main thread.
+     */
+    CompletionStage<Config> create(final String name, final Config config);
+
+    /**
+     * Delete a persistent tunnel.
+     *
+     * @param name The name of the tunnel to delete.
+     * @return A future completed when the tunnel and its configuration have been deleted. This
+     * future will always be completed on the main thread.
+     */
+    CompletionStage<Void> delete(final String name);
+
+    /**
+     * Enumerate the names of tunnels present in persistent storage.
+     *
+     * @return A future completed when the set of present tunnel names is available. This future
+     * will always be completed on the main thread.
+     */
+    CompletionStage<Set<String>> enumerate();
+
+    /**
+     * Load the configuration for the tunnel given by {@code name}.
+     *
+     * @param name The identifier for the configuration in persistent storage (i.e. the name of the
+     *             tunnel).
+     * @return A future completed when an in-memory representation of the configuration is
+     * available. This future encapsulates the configuration loaded from persistent storage. This
+     * future will always be completed on the main thread.
+     */
+    CompletionStage<Config> load(final String name);
+
+    /**
+     * Save the configuration for an existing tunnel given by {@code name}.
+     *
+     * @param name   The identifier for the configuration in persistent storage (i.e. the name of
+     *               the tunnel).
+     * @param config An updated configuration object for the tunnel.
+     * @return A future completed when the configuration has been saved to persistent storage. This
+     * future encapsulates the configuration that was actually saved to persistent storage. This
+     * future will always be completed on the main thread.
+     */
+    CompletionStage<Config> save(final String name, final Config config);
+}