#366: Add file appender with rolling options

Fixed #366

.docker/docker-compose.yml

@@ -20,4 +20,4 @@ services:
     volumes:
       - .local/dumps:/lazylead/dumps
       - .local/logs:/lazylead/logs
-    entrypoint: bin/lazylead --trace --verbose
+    entrypoint: bin/lazylead --trace --verbose --log-file /lazylead/logs/ll{{.%Y-%m-%dT%H:%M:%S}}.log

.rubocop.yml

@@ -15,6 +15,7 @@ Layout/LineLength:
   Exclude:
     - "*.gemspec"
     - "test/**/*"
+    - "bin/lazylead"
 
 Metrics/AbcSize:
   Max: 21

bin/lazylead

@@ -70,6 +70,9 @@ Available options:"
   o.bool "--testdata",
          "Apply the database VCS migration with test data",
          default: false
+  o.string "--log-file", "The path to the log file"
+  o.string "--rolling-age", "The maximum age (in seconds) of a log file before it is rolled. The age can also be given as 'daily', 'weekly', or 'monthly'"
+  o.string "--rolling-files", "The number of rolled log files to keep."
   o.on "--verbose", "Enable extra logging information" do
     log.verbose
   end

lib/lazylead/log.rb

@@ -74,6 +74,15 @@ module Level
       )
     )
 
+    if ARGV.include? "--log-file"
+      name = ARGV[ARGV.find_index("--log-file") + 1]
+      age = "daily"
+      age = ARGV[ARGV.find_index("--rolling-age") + 1] if ARGV.include? "--rolling-age"
+      files = 7
+      files = ARGV[ARGV.find_index("--rolling-files") + 1] if ARGV.include? "--rolling-files"
+      FILE_APPENDER = Logging.appenders.rolling_file("file", filename: name, age: age, keep: files)
+    end
+
     # Nothing to log
     NOTHING = Logging.logger["nothing"]
     NOTHING.level = :off
@@ -83,12 +92,14 @@ module Level
     DEBUG = Logging.logger["debug"]
     DEBUG.level = :debug
     DEBUG.add_appenders "stdout"
+    DEBUG.add_appenders(FILE_APPENDER) if ARGV.include? "--log-file"
     DEBUG.freeze
 
     # Alerts/errors
     ERRORS = Logging.logger["errors"]
     ERRORS.level = :error
     ERRORS.add_appenders "stdout"
+    ERRORS.add_appenders(FILE_APPENDER) if ARGV.include? "--log-file"
     ERRORS.freeze
   end
 end