[Agent crash on api/v1/info call] - fixes #12559 (#12565)

* [Agent crash on api/v1/info call] - fixes #12559
returns boolean values
updated swagger files

3 files changed, 19 insertions, 5 deletions

diff --git a/web/api/netdata-swagger.json b/web/api/netdata-swagger.json
index 4a2d16eb34..0569e515a0 100644
--- a/web/api/netdata-swagger.json
+++ b/web/api/netdata-swagger.json
@@ -9,7 +9,7 @@
     "/info": {
       "get": {
         "summary": "Get netdata basic information",
-        "description": "The info endpoint returns basic information about netdata. It provides:\n* netdata version\n* netdata unique id\n* list of hosts mirrored (includes itself)\n* Operating System, Virtualization, K8s nodes and Container technology information\n* List of active collector plugins and modules\n* number of alarms in the host\n  * number of alarms in normal state\n  * number of alarms in warning state\n  * number of alarms in critical state\n",
+        "description": "The info endpoint returns basic information about netdata. It provides:\n* netdata version\n* netdata unique id\n* list of hosts mirrored (includes itself)\n* Operating System, Virtualization, K8s nodes and Container technology information\n* List of active collector plugins and modules\n* Streaming information\n* number of alarms in the host\n  * number of alarms in normal state\n  * number of alarms in warning state\n  * number of alarms in critical state\n",
         "responses": {
           "200": {
             "description": "netdata basic information.",
@@ -1220,6 +1220,11 @@
             "description": "Container technology detection method.",
             "example": "dockerenv"
           },
+          "stream_compression": {
+            "type": "boolean",
+            "description": "Stream transmission compression method.",
+            "example": "true"
+          },
           "labels": {
             "type": "object",
             "description": "List of host labels.",
diff --git a/web/api/netdata-swagger.yaml b/web/api/netdata-swagger.yaml
index 80d2bfdfeb..7d052c26f9 100644
--- a/web/api/netdata-swagger.yaml
+++ b/web/api/netdata-swagger.yaml
@@ -14,6 +14,7 @@ paths:
         * list of hosts mirrored (includes itself)
         * Operating System, Virtualization, K8s nodes and Container technology information
         * List of active collector plugins and modules
+        * Streaming information
         * number of alarms in the host
           * number of alarms in normal state
           * number of alarms in warning state
@@ -984,6 +985,10 @@ components:
           type: string
           description: Container technology detection method.
           example: dockerenv
+        stream_compression:
+          type: boolean
+          description: Stream transmission compression method.
+          example: true
         labels:
           type: object
           description: List of host labels.
diff --git a/web/api/web_api_v1.c b/web/api/web_api_v1.c
index 4a5378db28..d00dc355f5 100644
--- a/web/api/web_api_v1.c
+++ b/web/api/web_api_v1.c
@@ -1050,11 +1050,15 @@ inline int web_client_api_request_v1_info_fill_buffer(RRDHOST *host, BUFFER *wb)
     buffer_strcat(wb, ",\n");
 
 #ifdef  ENABLE_COMPRESSION
-    buffer_strcat(wb, "\t\"stream-compression\": ");
-    buffer_strcat(wb, (host->sender->rrdpush_compression ? "\"enabled\"" : "\"disabled\""));
-    buffer_strcat(wb, ",\n");
+    if(host->sender){
+        buffer_strcat(wb, "\t\"stream-compression\": ");
+        buffer_strcat(wb, (host->sender->rrdpush_compression ? "true" : "false"));
+        buffer_strcat(wb, ",\n");
+    }else{
+        buffer_strcat(wb, "\t\"stream-compression\": null,\n");
+    }
 #else
-    buffer_strcat(wb, "\t\"stream-compression\": \"N/A\",\n");
+    buffer_strcat(wb, "\t\"stream-compression\": null,\n");
 #endif  //ENABLE_COMPRESSION   
 
     buffer_strcat(wb, "\t\"hosts-available\": ");