1 files changed, 116 insertions, 0 deletions
diff --git a/src/registry/registry_machine.c b/src/registry/registry_machine.c
new file mode 100644
index 000000000..a94fb8ea4
--- /dev/null
+++ b/src/registry/registry_machine.c
@@ -0,0 +1,116 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "daemon/common.h"
+#include "registry_internals.h"
+
+// ----------------------------------------------------------------------------
+// MACHINE
+
+REGISTRY_MACHINE *registry_machine_find(const char *machine_guid) {
+    netdata_log_debug(D_REGISTRY, "REGISTRY: registry_machine_find('%s')", machine_guid);
+    return dictionary_get(registry.machines, machine_guid);
+}
+
+REGISTRY_MACHINE_URL *registry_machine_url_find(REGISTRY_MACHINE *m, STRING *url) {
+    REGISTRY_MACHINE_URL *mu;
+
+    for(mu = m->machine_urls; mu ;mu = mu->next)
+        if(mu->url == url)
+            break;
+
+    return mu;
+}
+
+void registry_machine_url_unlink_from_machine_and_free(REGISTRY_MACHINE *m, REGISTRY_MACHINE_URL *mu) {
+    DOUBLE_LINKED_LIST_REMOVE_ITEM_UNSAFE(m->machine_urls, mu, prev, next);
+    string_freez(mu->url);
+    aral_freez(registry.machine_urls_aral, mu);
+}
+
+REGISTRY_MACHINE_URL *registry_machine_url_allocate(REGISTRY_MACHINE *m, STRING *u, time_t when) {
+    netdata_log_debug(D_REGISTRY, "REGISTRY: registry_machine_url_allocate('%s', '%s'): allocating %zu bytes", m->guid, string2str(u), sizeof(REGISTRY_MACHINE_URL));
+
+    REGISTRY_MACHINE_URL *mu = aral_mallocz(registry.machine_urls_aral);
+
+    mu->first_t = mu->last_t = (uint32_t)when;
+    mu->usages = 1;
+    mu->url = string_dup(u);
+    mu->flags = REGISTRY_URL_FLAGS_DEFAULT;
+
+    netdata_log_debug(D_REGISTRY, "REGISTRY: registry_machine_url_allocate('%s', '%s'): indexing URL in machine", m->guid, string2str(u));
+
+    DOUBLE_LINKED_LIST_PREPEND_ITEM_UNSAFE(m->machine_urls, mu, prev, next);
+
+    return mu;
+}
+
+REGISTRY_MACHINE *registry_machine_allocate(const char *machine_guid, time_t when) {
+    netdata_log_debug(D_REGISTRY, "REGISTRY: registry_machine_allocate('%s'): creating new machine, sizeof(MACHINE)=%zu", machine_guid, sizeof(REGISTRY_MACHINE));
+
+    REGISTRY_MACHINE *m = aral_mallocz(registry.machines_aral);
+
+    strncpyz(m->guid, machine_guid, GUID_LEN);
+
+    m->machine_urls = NULL;
+
+    m->first_t = m->last_t = (uint32_t)when;
+    m->usages = 0;
+    m->links = 0;
+
+    registry.machines_count++;
+
+    dictionary_set(registry.machines, m->guid, m, sizeof(REGISTRY_MACHINE));
+
+    return m;
+}
+
+// 1. validate machine GUID
+// 2. if it is valid, find it or create it and return it
+// 3. if it is not valid, return NULL
+REGISTRY_MACHINE *registry_machine_find_or_create(const char *machine_guid, time_t when, bool is_dummy __maybe_unused) {
+    REGISTRY_MACHINE *m = NULL;
+
+    if(likely(machine_guid && *machine_guid)) {
+        // validate it is a GUID
+        char buf[GUID_LEN + 1];
+        if(unlikely(regenerate_guid(machine_guid, buf) == -1))
+            netdata_log_info("REGISTRY: machine guid '%s' is not a valid guid. Ignoring it.", machine_guid);
+        else {
+            machine_guid = buf;
+            m = registry_machine_find(machine_guid);
+            if(!m) m = registry_machine_allocate(machine_guid, when);
+        }
+    }
+
+    return m;
+}
+
+
+// ----------------------------------------------------------------------------
+// LINKING OF OBJECTS
+
+REGISTRY_MACHINE_URL *registry_machine_link_to_url(REGISTRY_MACHINE *m, STRING *url, time_t when) {
+    netdata_log_debug(D_REGISTRY, "REGISTRY: registry_machine_link_to_url('%s', '%s'): searching for URL in machine", m->guid, string2str(url));
+
+    REGISTRY_MACHINE_URL *mu = registry_machine_url_find(m, url);
+    if(!mu) {
+        netdata_log_debug(D_REGISTRY, "REGISTRY: registry_machine_link_to_url('%s', '%s'): not found", m->guid, string2str(url));
+        mu = registry_machine_url_allocate(m, url, when);
+        registry.machines_urls_count++;
+    }
+    else {
+        netdata_log_debug(D_REGISTRY, "REGISTRY: registry_machine_link_to_url('%s', '%s'): found", m->guid, string2str(url));
+        mu->usages++;
+        if(likely(mu->last_t < (uint32_t)when)) mu->last_t = (uint32_t)when;
+    }
+
+    m->usages++;
+    if(likely(m->last_t < (uint32_t)when)) m->last_t = (uint32_t)when;
+
+    if(mu->flags & REGISTRY_URL_FLAGS_EXPIRED) {
+        netdata_log_debug(D_REGISTRY, "REGISTRY: registry_machine_link_to_url('%s', '%s'): accessing an expired URL.", m->guid, string2str(url));
+        mu->flags &= ~REGISTRY_URL_FLAGS_EXPIRED;
+    }
+
+    return mu;
+}