Remove aclk_api.[ch] (#13540)

* get rid of aclk_starter middleman
* get rid of aclk_api.[ch]

5 files changed, 79 insertions, 137 deletions

diff --git a/aclk/aclk.c b/aclk/aclk.c
index 7b3641b1e2..cfd85ad3a3 100644
--- a/aclk/aclk.c
+++ b/aclk/aclk.c
@@ -2,6 +2,7 @@
 
 #include "aclk.h"
 
+#ifdef ENABLE_ACLK
 #include "aclk_stats.h"
 #include "mqtt_wss_client.h"
 #include "aclk_otp.h"
@@ -23,11 +24,23 @@
 
 #define ACLK_STABLE_TIMEOUT 3 // Minimum delay to mark AGENT as stable
 
+#endif /* ENABLE_ACLK */
+
 int aclk_pubacks_per_conn = 0; // How many PubAcks we got since MQTT conn est.
 int aclk_rcvd_cloud_msgs = 0;
 int aclk_connection_counter = 0;
 int disconnect_req = 0;
 
+int aclk_connected = 0;
+int use_mqtt_5 = 0;
+int aclk_ctx_based = 0;
+int aclk_disable_runtime = 0;
+int aclk_stats_enabled;
+int aclk_kill_link = 0;
+
+usec_t aclk_session_us = 0;
+time_t aclk_session_sec = 0;
+
 time_t last_conn_time_mqtt = 0;
 time_t last_conn_time_appl = 0;
 time_t last_disconnect_time = 0;
@@ -38,6 +51,7 @@ int aclk_alert_reloaded = 0; //1 on health log exchange, and again on health_rel
 
 time_t aclk_block_until = 0;
 
+#ifdef ENABLE_ACLK
 mqtt_wss_client mqttwss_client;
 
 netdata_mutex_t aclk_shared_state_mutex = NETDATA_MUTEX_INITIALIZER;
@@ -923,9 +937,13 @@ static void fill_chart_status_for_host(BUFFER *wb, RRDHOST *host)
     );
     freez(stats);
 }
+#endif /* ENABLE_ACLK */
 
-char *ng_aclk_state(void)
+char *aclk_state(void)
 {
+#ifndef ENABLE_ACLK
+    return strdupz("ACLK Available: No");
+#else
     BUFFER *wb = buffer_create(1024);
     struct tm *tmptr, tmbuf;
     char *ret;
@@ -1010,8 +1028,10 @@ char *ng_aclk_state(void)
     ret = strdupz(buffer_tostring(wb));
     buffer_free(wb);
     return ret;
+#endif /* ENABLE_ACLK */
 }
 
+#ifdef ENABLE_ACLK
 static void fill_alert_status_for_host_json(json_object *obj, RRDHOST *host)
 {
     struct proto_alert_status status;
@@ -1087,9 +1107,13 @@ static json_object *timestamp_to_json(const time_t *t)
     }
     return NULL;
 }
+#endif /* ENABLE_ACLK */
 
-char *ng_aclk_state_json(void)
+char *aclk_state_json(void)
 {
+#ifndef ENABLE_ACLK
+    return strdupz("{\"aclk-available\":false}");
+#else
     json_object *tmp, *grp, *msg = json_object_new_object();
 
     tmp = json_object_new_boolean(1);
@@ -1203,4 +1227,36 @@ char *ng_aclk_state_json(void)
     char *str = strdupz(json_object_to_json_string_ext(msg, JSON_C_TO_STRING_PLAIN));
     json_object_put(msg);
     return str;
+#endif /* ENABLE_ACLK */
+}
+
+void add_aclk_host_labels(void) {
+    DICTIONARY *labels = localhost->host_labels;
+
+#ifdef ENABLE_ACLK
+    rrdlabels_add(labels, "_aclk_available", "true", RRDLABEL_SRC_AUTO|RRDLABEL_SRC_ACLK);
+    ACLK_PROXY_TYPE aclk_proxy;
+    char *proxy_str;
+    aclk_get_proxy(&aclk_proxy);
+
+    switch(aclk_proxy) {
+        case PROXY_TYPE_SOCKS5:
+            proxy_str = "SOCKS5";
+            break;
+        case PROXY_TYPE_HTTP:
+            proxy_str = "HTTP";
+            break;
+        default:
+            proxy_str = "none";
+            break;
+    }
+
+    int mqtt5 = config_get_boolean(CONFIG_SECTION_CLOUD, "mqtt5", CONFIG_BOOLEAN_YES);
+
+    rrdlabels_add(labels, "_mqtt_version", mqtt5 ? "5" : "3", RRDLABEL_SRC_AUTO);
+    rrdlabels_add(labels, "_aclk_proxy", proxy_str, RRDLABEL_SRC_AUTO);
+    rrdlabels_add(labels, "_aclk_ng_new_cloud_protocol", "true", RRDLABEL_SRC_AUTO|RRDLABEL_SRC_ACLK);
+#else
+    rrdlabels_add(labels, "_aclk_available", "false", RRDLABEL_SRC_AUTO|RRDLABEL_SRC_ACLK);
+#endif
 }
diff --git a/aclk/aclk.h b/aclk/aclk.h
index 5065ac2bfc..061977c0b8 100644
--- a/aclk/aclk.h
+++ b/aclk/aclk.h
@@ -3,17 +3,32 @@
 #define ACLK_H
 
 #include "daemon/common.h"
+
+#ifdef ENABLE_ACLK
 #include "aclk_util.h"
 #include "aclk_rrdhost_state.h"
 
 // How many MQTT PUBACKs we need to get to consider connection
 // stable for the purposes of TBEB (truncated binary exponential backoff)
 #define ACLK_PUBACKS_CONN_STABLE 3
+#endif /* ENABLE_ACLK */
+
+extern int aclk_connected;
+extern int aclk_alert_reloaded;
+extern int use_mqtt_5;
+extern int aclk_ctx_based;
+extern int aclk_disable_runtime;
+extern int aclk_stats_enabled;
+extern int aclk_kill_link;
+
+extern usec_t aclk_session_us;
+extern time_t aclk_session_sec;
 
 extern time_t aclk_block_until;
 
 extern int disconnect_req;
 
+#ifdef ENABLE_ACLK
 void *aclk_main(void *ptr);
 
 extern netdata_mutex_t aclk_shared_state_mutex;
@@ -34,7 +49,10 @@ void aclk_send_node_instances(void);
 
 void aclk_send_bin_msg(char *msg, size_t msg_len, enum aclk_topics subtopic, const char *msgname);
 
-char *ng_aclk_state(void);
-char *ng_aclk_state_json(void);
+#endif /* ENABLE_ACLK */
+
+char *aclk_state(void);
+char *aclk_state_json(void);
+void add_aclk_host_labels(void);
 
 #endif /* ACLK_H */
diff --git a/aclk/aclk_api.c b/aclk/aclk_api.c
deleted file mode 100644
index 141d267af2..0000000000
--- a/aclk/aclk_api.c
+++ /dev/null
@@ -1,88 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-#include "libnetdata/libnetdata.h"
-#include "database/rrd.h"
-
-#ifdef ENABLE_ACLK
-#include "aclk.h"
-#endif
-
-int aclk_connected = 0;
-int aclk_kill_link = 0;
-
-usec_t aclk_session_us = 0;
-time_t aclk_session_sec = 0;
-
-int aclk_disable_runtime = 0;
-
-int aclk_stats_enabled;
-int use_mqtt_5 = 0;
-int aclk_ctx_based = 0;
-
-#define ACLK_IMPL_KEY_NAME "aclk implementation"
-
-#ifdef ENABLE_ACLK
-void *aclk_starter(void *ptr) {
-    char *aclk_impl_req = config_get(CONFIG_SECTION_CLOUD, ACLK_IMPL_KEY_NAME, "ng");
-
-    if (!strcasecmp(aclk_impl_req, "ng")) {
-        return aclk_main(ptr);
-    } else if (!strcasecmp(aclk_impl_req, "legacy")) {
-        error("Legacy ACLK is not supported anymore key \"" ACLK_IMPL_KEY_NAME "\" in section \"" CONFIG_SECTION_CLOUD "\" ignored. Using ACLK-NG.");
-    } else {
-        error("Unknown value \"%s\" of key \"" ACLK_IMPL_KEY_NAME "\" in section \"" CONFIG_SECTION_CLOUD "\". Using ACLK-NG. This config key will be deprecated.", aclk_impl_req);
-    }
-    return aclk_main(ptr);
-}
-#endif /* ENABLE_ACLK */
-
-void add_aclk_host_labels(void) {
-    DICTIONARY *labels = localhost->host_labels;
-
-#ifdef ENABLE_ACLK
-    rrdlabels_add(labels, "_aclk_ng_available", "true", RRDLABEL_SRC_AUTO|RRDLABEL_SRC_ACLK);
-#else
-    rrdlabels_add(labels, "_aclk_ng_available", "false", RRDLABEL_SRC_AUTO|RRDLABEL_SRC_ACLK);
-#endif
-    rrdlabels_add(labels, "_aclk_legacy_available", "false", RRDLABEL_SRC_AUTO|RRDLABEL_SRC_ACLK);
-#ifdef ENABLE_ACLK
-    ACLK_PROXY_TYPE aclk_proxy;
-    char *proxy_str;
-    aclk_get_proxy(&aclk_proxy);
-
-    switch(aclk_proxy) {
-        case PROXY_TYPE_SOCKS5:
-            proxy_str = "SOCKS5";
-            break;
-        case PROXY_TYPE_HTTP:
-            proxy_str = "HTTP";
-            break;
-        default:
-            proxy_str = "none";
-            break;
-    }
-
-
-    int mqtt5 = config_get_boolean(CONFIG_SECTION_CLOUD, "mqtt5", CONFIG_BOOLEAN_YES);
-
-    rrdlabels_add(labels, "_mqtt_version", mqtt5 ? "5" : "3", RRDLABEL_SRC_AUTO);
-    rrdlabels_add(labels, "_aclk_impl", "Next Generation", RRDLABEL_SRC_AUTO);
-    rrdlabels_add(labels, "_aclk_proxy", proxy_str, RRDLABEL_SRC_AUTO);
-    rrdlabels_add(labels, "_aclk_ng_new_cloud_protocol", "true", RRDLABEL_SRC_AUTO|RRDLABEL_SRC_ACLK);
-#endif
-}
-
-char *aclk_state(void) {
-#ifndef ENABLE_ACLK
-    return strdupz("ACLK Available: No");
-#else
-    return ng_aclk_state();
-#endif
-}
-
-char *aclk_state_json(void) {
-#ifndef ENABLE_ACLK
-    return strdupz("{\"aclk-available\":false}");
-#else
-    return ng_aclk_state_json();
-#endif
-}
diff --git a/aclk/aclk_api.h b/aclk/aclk_api.h
deleted file mode 100644
index 36a6d603f3..0000000000
--- a/aclk/aclk_api.h
+++ /dev/null
@@ -1,45 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-#ifndef ACLK_API_H
-#define ACLK_API_H
-
-#include "libnetdata/libnetdata.h"
-
-#include "aclk_proxy.h"
-
-// TODO get rid global vars as soon as
-// ACLK Legacy is removed
-extern int aclk_connected;
-extern int aclk_kill_link;
-
-extern usec_t aclk_session_us;
-extern time_t aclk_session_sec;
-
-extern int aclk_disable_runtime;
-
-extern int aclk_stats_enabled;
-extern int aclk_alert_reloaded;
-
-extern int use_mqtt_5;
-extern int aclk_ctx_based;
-
-#ifdef ENABLE_ACLK
-void *aclk_starter(void *ptr);
-
-void aclk_host_state_update(RRDHOST *host, int connect);
-
-#define NETDATA_ACLK_HOOK                                                                                              \
-    { .name = "ACLK_Main",                                                                                             \
-      .config_section = NULL,                                                                                          \
-      .config_name = NULL,                                                                                             \
-      .enabled = 1,                                                                                                    \
-      .thread = NULL,                                                                                                  \
-      .init_routine = NULL,                                                                                            \
-      .start_routine = aclk_starter },
-
-#endif
-
-void add_aclk_host_labels(void);
-char *aclk_state(void);
-char *aclk_state_json(void);
-
-#endif /* ACLK_API_H */
diff --git a/aclk/aclk_util.c b/aclk/aclk_util.c
index ec021aec55..01eaedc8e0 100644
--- a/aclk/aclk_util.c
+++ b/aclk/aclk_util.c
@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 #include "aclk_util.h"
+#include "aclk_proxy.h"
 
 #include "daemon/common.h"