Add blackbox configuration: define modules for HTTP, TCP, SSH, and ICMP probing

blackbox/blackbox.yaml

@@ -0,0 +1,27 @@
+modules:
+  http_2xx:
+    prober: http
+    http:
+      preferred_ip_protocol: "ip4"
+  tcp_connect:
+    prober: tcp
+  ssh_banner:
+    prober: tcp
+    tcp:
+      query_response:
+      - expect: "^SSH-2.0-"
+      - send: "SSH-2.0-blackbox-ssh-check"
+  icmp:
+    prober: icmp
+  icmp_ttl5:
+    prober: icmp
+    timeout: 5s
+    icmp:
+      ttl: 5
+  http_3xx:
+    prober: http
+    http:
+      preferred_ip_protocol: "ip4"
+      enable_http3: true
+      enable_http2: false
+      valid_http_versions: ["HTTP/3.0"]

lib/std.alloy

@@ -28,14 +28,8 @@ declare "fmt_repository_path" {
     }
 }
 
-declare "load_host_config" {
+declare "load_config" {
-	argument "host" {
+    argument "config_file" {
-		optional = true
-		comment  = "The host to load the configuration for"
-		default  = sys.env("GCLOUD_FM_COLLECTOR_ID")
-	}
-
-	argument "config_file" {
 		optional = false
 		comment = "The path to the configuration file"
 	}
@@ -58,6 +52,34 @@ declare "load_host_config" {
     }
 
     export "config" {
-        value = encoding.from_yaml(remote.http.config_file.content)[argument.host.value]
+        value = remote.http.config_file.content
+    }
+}
+
+declare "load_host_config" {
+	argument "host" {
+		optional = true
+		comment  = "The host to load the configuration for"
+		default  = sys.env("GCLOUD_FM_COLLECTOR_ID")
+	}
+
+	argument "config_file" {
+		optional = false
+		comment = "The path to the configuration file"
+	}
+
+    argument "repository" {
+        optional = true
+        comment  = "The repository to use for loading the configuration"
+        default  = "https://git.kkarolis.lt/karolis/Alloy/"
+    }
+
+    load_config "remote" {
+        config_file = argument.config_file.value
+        repository  = argument.repository.value
+    }
+
+    export "config" {
+        value = encoding.from_yaml(load_config.remote.config)[argument.host.value]
     }
 }