Adding upstream version 1.45.3+dfsg.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

3 files changed, 51 insertions, 0 deletions

diff --git a/src/libnetdata/uuid/README.md b/src/libnetdata/uuid/README.md
new file mode 100644
index 000000000..a0da380a9
--- /dev/null
+++ b/src/libnetdata/uuid/README.md
@@ -0,0 +1,13 @@
+<!--
+title: "UUID"
+custom_edit_url: https://github.com/netdata/netdata/edit/master/src/libnetdata/uuid/README.md
+sidebar_label: "UUID"
+learn_topic_type: "Tasks"
+learn_rel_path: "Developers/libnetdata"
+-->
+
+# UUID
+
+Netdata uses libuuid for managing UUIDs.
+
+In this folder are a few custom helpers.
\ No newline at end of file
diff --git a/libnetdata/uuid/uuid.c b/src/libnetdata/uuid/uuid.c
index 55b66db9b..f062d0bc5 100644
--- a/libnetdata/uuid/uuid.c
+++ b/src/libnetdata/uuid/uuid.c
@@ -2,6 +2,26 @@
 
 #include "../libnetdata.h"
 
+
+UUID UUID_generate_from_hash(const void *payload, size_t payload_len) {
+    assert(sizeof(XXH128_hash_t) == sizeof(UUID));
+
+    UUID uuid;
+    XXH128_hash_t *xxh3_128 = (XXH128_hash_t *)&uuid;
+
+    // Hash the payload using XXH128
+    // Assume xxh128_hash_function is your function to generate XXH128 hash
+    *xxh3_128 = XXH3_128bits(payload, payload_len);
+
+    // Set the UUID version (here, setting it to 4)
+    uuid.uuid[6] = (uuid.uuid[6] & 0x0F) | 0x40; // Version 4
+
+    // Set the UUID variant (standard variant for UUID)
+    uuid.uuid[8] = (uuid.uuid[8] & 0x3F) | 0x80; // Variant is 10xxxxxx
+
+    return uuid;
+}
+
 void uuid_unparse_lower_compact(const uuid_t uuid, char *out) {
     static const char *hex_chars = "0123456789abcdef";
     for (int i = 0; i < 16; i++) {
diff --git a/libnetdata/uuid/uuid.h b/src/libnetdata/uuid/uuid.h
index 567646846..6d5f024f8 100644
--- a/libnetdata/uuid/uuid.h
+++ b/src/libnetdata/uuid/uuid.h
@@ -10,6 +10,24 @@ UUID_DEFINE(health_alert_transition_msgid, 0x9c, 0xe0, 0xcb, 0x58, 0xab, 0x8b, 0
 // this is also defined in alarm-notify.sh.in
 UUID_DEFINE(health_alert_notification_msgid, 0x6d, 0xb0, 0x01, 0x8e, 0x83, 0xe3, 0x43, 0x20, 0xae, 0x2a, 0x65, 0x9d, 0x78, 0x01, 0x9f, 0xb7);
 
+typedef struct {
+    union {
+        uuid_t uuid;
+        struct {
+            uint64_t hig64;
+            uint64_t low64;
+        } parts;
+    };
+} UUID;
+UUID UUID_generate_from_hash(const void *payload, size_t payload_len);
+
+#define UUIDeq(a, b) ((a).parts.hig64 == (b).parts.hig64 && (a).parts.low64 == (b).parts.low64)
+
+static inline UUID uuid2UUID(uuid_t uu1) {
+    UUID *ret = (UUID *)uu1;
+    return *ret;
+}
+
 #define UUID_COMPACT_STR_LEN 33
 void uuid_unparse_lower_compact(const uuid_t uuid, char *out);
 int uuid_parse_compact(const char *in, uuid_t uuid);