Add log file rotation

CHANGELOG.md

@@ -8,6 +8,7 @@ Bob versions changelog
 - Prometheus metrics exporter ([#240](https://github.com/qoollo/bob/pull/251))
 - Rate metrics ([#242](https://github.com/qoollo/bob/pull/251))
 - Global exporter is used, different exporters may be load conditionally ([No issue](https://github.com/qoollo/bob/pull/251))
+- Add log file rotation to logger.yaml in examples ([#289](https://github.com/qoollo/bob/pull/297))
 
 #### Changed
 

config-examples/logger.yaml

@@ -21,11 +21,41 @@ appenders:
 
   # An appender named "requests" that writes to a file with a custom pattern encoder
   requests:
-    kind: file
+    kind: rolling_file
     # [path] to the log file
-    path: "./log/logs.log"
+    path: "./log/info.log"
     encoder:
       pattern: "{d(%Y-%m-%d %H:%M:%S):<20} {M:>20.30}:{L:>3} {l} {m}{n}"
+    policy:
+      kind: compound
+      trigger:
+        kind: size
+        limit: 10 mb
+      roller:
+        kind: fixed_window
+        pattern: "./log/archive/info.{}.log"
+        count: 5
+    filters:
+    - kind: threshold
+      level: info
+
+  requests_error:
+    kind: rolling_file
+    path: "./log/error.log"
+    encoder:
+      pattern: "{d(%Y-%m-%d %H:%M:%S):<20} {M:>20.30}:{L:>3} {l} {m}{n}"
+    policy:
+      kind: compound
+      trigger:
+        kind: size
+        limit: 10 mb
+      roller:
+        kind: fixed_window
+        pattern: "./log/archive/error.{}.log"
+        count: 5
+    filters:
+    - kind: threshold
+      level: error
 
 # root logger sets the default global logging level attach appenders to the root
 # Other loggers use this parameters as default
@@ -44,6 +74,7 @@ loggers:
     level: info
     appenders:
       - requests
+      - requests_error
       - stdout
     # [bool] if true, logger won't delete existing configs on start
     additive: false
@@ -52,27 +83,31 @@ loggers:
     level: info
     appenders:
       - requests
+      - requests_error
       - stdout
     additive: false
   bob_common:
     # level applies only to bob-common
     level: info
     appenders:
       - requests
+      - requests_error
       - stdout
     additive: false
-  bob_tools:
+  bob_apps:
     # level applies only to bob-tools
     level: info
     appenders:
       - requests
+      - requests_error
       - stdout
     additive: false
   bob_grpc:
     # level applies only to bob-grpc
     level: info
     appenders:
       - requests
+      - requests_error
       - stdout
     additive: false
   # pearl - low level IO lib
@@ -81,6 +116,7 @@ loggers:
     level: error
     appenders:
       - requests
+      - requests_error
       - stdout
     additive: false
   h2: