1 files changed, 87 insertions, 0 deletions
diff --git a/src/aclk/aclk_query_queue.h b/src/aclk/aclk_query_queue.h
new file mode 100644
index 000000000..4a4a36a3f
--- /dev/null
+++ b/src/aclk/aclk_query_queue.h
@@ -0,0 +1,87 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_ACLK_QUERY_QUEUE_H
+#define NETDATA_ACLK_QUERY_QUEUE_H
+
+#include "libnetdata/libnetdata.h"
+#include "daemon/common.h"
+#include "schema-wrappers/schema_wrappers.h"
+
+#include "aclk_util.h"
+
+typedef enum {
+    UNKNOWN = 0,
+    HTTP_API_V2,
+    REGISTER_NODE,
+    NODE_STATE_UPDATE,
+    CHART_DIMS_UPDATE,
+    CHART_CONFIG_UPDATED,
+    CHART_RESET,
+    RETENTION_UPDATED,
+    UPDATE_NODE_INFO,
+    ALARM_PROVIDE_CHECKPOINT,
+    ALARM_PROVIDE_CFG,
+    ALARM_SNAPSHOT,
+    UPDATE_NODE_COLLECTORS,
+    PROTO_BIN_MESSAGE,
+    ACLK_QUERY_TYPE_COUNT // always keep this as last
+} aclk_query_type_t;
+
+struct aclk_query_http_api_v2 {
+    char *payload;
+    char *query;
+};
+
+struct aclk_bin_payload { 
+    char *payload;
+    size_t size;
+    enum aclk_topics topic;
+    const char *msg_name;
+};
+
+typedef struct aclk_query *aclk_query_t;
+struct aclk_query {
+    aclk_query_type_t type;
+
+    // dedup_id is used to deduplicate queries in the list
+    // if type and dedup_id is the same message is deduplicated
+    // set dedup_id to NULL to never deduplicate the message
+    // set dedup_id to constant (e.g. empty string "") to make
+    // message of this type ever exist only once in the list
+    char *dedup_id;
+    char *callback_topic;
+    char *msg_id;
+
+    struct timeval created_tv;
+    usec_t created;
+    int timeout;
+    aclk_query_t prev, next;
+
+    // TODO maybe remove?
+    int version;
+    union {
+        struct aclk_query_http_api_v2 http_api_v2;
+        struct aclk_bin_payload bin_payload;
+    } data;
+};
+
+aclk_query_t aclk_query_new(aclk_query_type_t type);
+void aclk_query_free(aclk_query_t query);
+
+int aclk_queue_query(aclk_query_t query);
+aclk_query_t aclk_queue_pop(void);
+void aclk_queue_flush(void);
+
+void aclk_queue_lock(void);
+void aclk_queue_unlock(void);
+
+#define QUEUE_IF_PAYLOAD_PRESENT(query) do {                                                                           \
+    if (likely(query->data.bin_payload.payload)) {                                                                     \
+        aclk_queue_query(query);                                                                                       \
+    } else {                                                                                                           \
+        nd_log(NDLS_DAEMON, NDLP_ERR, "Failed to generate payload");                                                   \
+        aclk_query_free(query);                                                                                        \
+    }                                                                                                                  \
+} while(0)
+
+#endif /* NETDATA_ACLK_QUERY_QUEUE_H */