tooling: add log generator and collection to compose.yaml

Author: Simon Bordeyne

.alloy/config.alloy

@@ -0,0 +1,49 @@
+livedebugging {
+    enabled = true
+}
+
+discovery.docker "linux" {
+  host = "unix:///var/run/docker.sock"
+}
+
+discovery.relabel "logs_integrations_docker" {
+  targets = []
+
+  rule {
+    source_labels = ["__meta_docker_container_name"]
+    regex = "/(.*)"
+    target_label = "service_name"
+  }
+}
+
+loki.source.docker "default" {
+  host       = "unix:///var/run/docker.sock"
+  targets    = discovery.docker.linux.targets
+  labels     = {"platform" = "docker"}
+  relabel_rules = discovery.relabel.logs_integrations_docker.rules
+  forward_to = [loki.process.logs.receiver]
+}
+
+loki.process "logs" {
+    stage.static_labels {
+        values = {
+            env = "dev",
+        }
+    }
+
+    forward_to = [loki.write.local.receiver]
+}
+
+loki.write "local" {
+    endpoint {
+        url = string.format(
+            "http://victorialogs:9428/insert/loki/api/v1/push?disable_message_parsing=1&_stream_fields=%s",
+            string.join([
+                "env",
+                "platform",
+                "service_name",
+                "level",
+            ], ","),
+        )
+    }
+}

.editorconfig

@@ -0,0 +1,3 @@
+[*.ts]
+indent_style = space
+indent_size = 2

compose.yaml

@@ -1,7 +1,34 @@
 services:
+  # Generate some logs for testing, in JSON format
+  flog-json:
+    image: mingrammer/flog:latest
+    command: ["flog", "-f", "json", "--number", "36000", "--sleep", "100ms"]
+  # Run Grafana Alloy to collect logs from Docker and forward them to VictoriaLogs
+  alloy:
+    image: grafana/alloy:latest
+    privileged: true
+    ports:
+      - 12345:12345
+      - 4317:4317
+      - 4318:4318
+    volumes:
+      - ./.alloy/config.alloy:/etc/alloy/config.alloy:ro
+      - /proc:/rootproc:ro
+      - /var/run/docker.sock.raw:/var/run/docker.sock
+      - /sys:/sys:ro
+      - /:/rootfs:ro
+      - /dev/disk/:/dev/disk:ro
+      - /var/lib/docker/:/var/lib/docker:ro
+    command: run --server.http.listen-addr=0.0.0.0:12345 --storage.path=/var/lib/alloy/data /etc/alloy/config.alloy
+    extra_hosts:
+      - "host.docker.internal:host-gateway"
+    devices:
+      - /dev/kmsg
   socks-proxy:
     image: serjs/go-socks5-proxy
     restart: always
+    environment:
+      REQUIRE_AUTH: "false"
   victorialogs:
     image: victoriametrics/victoria-logs:v1.26.0
     ports: