plugin: Basic scaffolding for the plugin subsystem

lightningd/plugin.h

@@ -0,0 +1,38 @@
+#ifndef LIGHTNING_LIGHTNINGD_PLUGIN_H
+#define LIGHTNING_LIGHTNINGD_PLUGIN_H
+#include "config.h"
+#include <ccan/take/take.h>
+#include <ccan/tal/tal.h>
+
+/**
+ * A collection of plugins, and some associated information.
+ *
+ * Mainly used as root context for calls in the plugin subsystem.
+ */
+struct plugins;
+
+/**
+ * Create a new plugins context.
+ */
+struct plugins *plugins_new(const tal_t *ctx);
+
+/**
+ * Initialize the registered plugins.
+ *
+ * Initialization includes spinning up the plugins, reading their
+ * manifest, and registering the JSON-RPC passthrough and command line
+ * arguments. In order to read the getmanifest reply from the plugins
+ * we spin up our own io_loop that exits once all plugins have
+ * responded.
+ */
+void plugins_init(struct plugins *plugins);
+
+/**
+ * Register a plugin for initialization and execution.
+ *
+ * @param plugins: Plugin context
+ * @param path: The path of the executable for this plugin
+ */
+void plugin_register(struct plugins *plugins, const char* path TAKES);
+
+#endif /* LIGHTNING_LIGHTNINGD_PLUGIN_H */