graphs: Add scaffolding for a graph collection

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

diff --git a/src/daemon/graphs.c b/src/daemon/graphs.c
new file mode 100644 (file)
index 0000000..9daf43a
--- /dev/null
+++ b/src/daemon/graphs.c
@@ -0,0 +1,78 @@
+/*#############################################################################
+#                                                                             #
+# collecty - A system statistics collection daemon for IPFire                 #
+# Copyright (C) 2025 IPFire Development Team                                  #
+#                                                                             #
+# This program is free software: you can redistribute it and/or modify        #
+# it under the terms of the GNU General Public License as published by        #
+# the Free Software Foundation, either version 3 of the License, or           #
+# (at your option) any later version.                                         #
+#                                                                             #
+# This program is distributed in the hope that it will be useful,             #
+# but WITHOUT ANY WARRANTY; without even the implied warranty of              #
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               #
+# GNU General Public License for more details.                                #
+#                                                                             #
+# You should have received a copy of the GNU General Public License           #
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.       #
+#                                                                             #
+#############################################################################*/
+
+#include <errno.h>
+#include <stdlib.h>
+
+#include "ctx.h"
+#include "daemon.h"
+#include "graphs.h"
+
+struct collecty_graphs {
+       collecty_ctx* ctx;
+       int nrefs;
+
+       // Daemon
+       collecty_daemon* daemon;
+};
+
+static void collecty_graphs_free(collecty_graphs* self) {
+       if (self->daemon)
+               collecty_daemon_unref(self->daemon);
+       if (self->ctx)
+               collecty_ctx_unref(self->ctx);
+       free(self);
+}
+
+int collecty_graphs_create(collecty_graphs** graphs,
+               collecty_ctx* ctx, collecty_daemon* daemon) {
+       collecty_graphs* self = NULL;
+
+       // Allocate some memory
+       self = calloc(1, sizeof(*self));
+       if (!self)
+               return -errno;
+
+       // Initialize the reference counter
+       self->nrefs = 1;
+
+       // Store a reference to the context
+       self->ctx = collecty_ctx_ref(ctx);
+
+       // Store a reference to the daemon
+       self->daemon = collecty_daemon_ref(daemon);
+
+       // Return the pointer
+       *graphs = self;
+       return 0;
+}
+
+collecty_graphs* collecty_graphs_ref(collecty_graphs* self) {
+       ++self->nrefs;
+       return self;
+}
+
+collecty_graphs* collecty_graphs_unref(collecty_graphs* self) {
+       if (--self->nrefs > 0)
+               return self;
+
+       collecty_graphs_free(self);
+       return NULL;
+}

diff --git a/src/daemon/graphs.h b/src/daemon/graphs.h
new file mode 100644 (file)
index 0000000..92c2f0c
--- /dev/null
+++ b/src/daemon/graphs.h
@@ -0,0 +1,34 @@
+/*#############################################################################
+#                                                                             #
+# collecty - A system statistics collection daemon for IPFire                 #
+# Copyright (C) 2025 IPFire Development Team                                  #
+#                                                                             #
+# This program is free software: you can redistribute it and/or modify        #
+# it under the terms of the GNU General Public License as published by        #
+# the Free Software Foundation, either version 3 of the License, or           #
+# (at your option) any later version.                                         #
+#                                                                             #
+# This program is distributed in the hope that it will be useful,             #
+# but WITHOUT ANY WARRANTY; without even the implied warranty of              #
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               #
+# GNU General Public License for more details.                                #
+#                                                                             #
+# You should have received a copy of the GNU General Public License           #
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.       #
+#                                                                             #
+#############################################################################*/
+
+#ifndef COLLECTY_GRAPHS_H
+#define COLLECTY_GRAPHS_H
+
+typedef struct collecty_graphs collecty_graphs;
+
+#include "ctx.h"
+#include "daemon.h"
+
+int collecty_graphs_create(collecty_graphs** graphs, collecty_ctx* ctx, collecty_daemon* daemon);
+
+collecty_graphs* collecty_graphs_ref(collecty_graphs* self);
+collecty_graphs* collecty_graphs_unref(collecty_graphs* self);
+
+#endif /* COLLECTY_GRAPHS_H */