1 files changed, 64 insertions, 0 deletions
diff --git a/include/crm/common/ipc_schedulerd.h b/include/crm/common/ipc_schedulerd.h
new file mode 100644
index 0000000..303ec59
--- /dev/null
+++ b/include/crm/common/ipc_schedulerd.h
@@ -0,0 +1,64 @@
+/*
+ * Copyright 2021-2022 the Pacemaker project contributors
+ *
+ * The version control history for this file may have further details.
+ *
+ * This source code is licensed under the GNU Lesser General Public License
+ * version 2.1 or later (LGPLv2.1+) WITHOUT ANY WARRANTY.
+ */
+
+#ifndef PCMK__CRM_COMMON_IPC_SCHEDULERD__H
+#  define PCMK__CRM_COMMON_IPC_SCHEDULERD__H
+
+#include <crm/common/ipc.h>  // pcmk_ipc_api_t
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * \file
+ * \brief IPC commands for Schedulerd
+ *
+ * \ingroup core
+ */
+
+
+//! Possible types of schedulerd replies
+enum pcmk_schedulerd_api_reply {
+    pcmk_schedulerd_reply_unknown,
+    pcmk_schedulerd_reply_graph,
+};
+
+/*!
+ * Schedulerd reply passed to event callback
+ */
+typedef struct {
+    enum pcmk_schedulerd_api_reply reply_type;
+
+    union {
+        // pcmk__schedulerd_reply_graph
+        struct {
+            xmlNode *tgraph;
+            const char *reference;
+            const char *input;
+        } graph;
+    } data;
+} pcmk_schedulerd_api_reply_t;
+
+/*!
+ * \brief Make an IPC request to the scheduler for the transition graph
+ *
+ * \param[in,out] api  IPC API connection
+ * \param[in]     cib  The CIB to create a transition graph for
+ * \param[out]    ref  The reference ID a response will have
+ *
+ * \return Standard Pacemaker return code
+ */
+int pcmk_schedulerd_api_graph(pcmk_ipc_api_t *api, xmlNode *cib, char **ref);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // PCMK__CRM_COMMON_IPC_SCHEDULERD__H