List of possible handlers

 * Possible handler types and related configurations (brackets indicate optional params):
 *
 * - service:
 *   - id
 *
 * - stream:
 *   - path: string
 *   - [level]: level name or int value, defaults to DEBUG
 *   - [bubble]: bool, defaults to true
 *   - [file_permission]: int|null, defaults to null (0644)
 *   - [use_locking]: bool, defaults to false
 *
 * - console:
 *   - [verbosity_levels]: level => verbosity configuration
 *   - [level]: level name or int value, defaults to DEBUG
 *   - [bubble]: bool, defaults to true
 *   - [console_formatter_options]: array
 *
 * - firephp:
 *   - [level]: level name or int value, defaults to DEBUG
 *   - [bubble]: bool, defaults to true
 *
 * - browser_console:
 *   - [level]: level name or int value, defaults to DEBUG
 *   - [bubble]: bool, defaults to true
 *
 * - gelf:
 *   - publisher: {id: ...} or {hostname: ..., port: ..., chunk_size: ...}
 *   - [level]: level name or int value, defaults to DEBUG
 *   - [bubble]: bool, defaults to true
 *
 * - chromephp:
 *   - [level]: level name or int value, defaults to DEBUG
 *   - [bubble]: bool, defaults to true
 *
 * - rotating_file:
 *   - path: string
 *   - [max_files]: files to keep, defaults to zero (infinite)
 *   - [level]: level name or int value, defaults to DEBUG
 *   - [bubble]: bool, defaults to true
 *   - [file_permission]: string|null, defaults to null
 *   - [use_locking]: bool, defaults to false
 *   - [filename_format]: string, defaults to '{filename}-{date}'
 *   - [date_format]: string, defaults to 'Y-m-d'
 *
 * - mongo:
 *   - mongo:
 *      - id: optional if host is given
 *      - host: database host name, optional if id is given
 *      - [port]: defaults to 27017
 *      - [user]: database user name
 *      - pass: mandatory only if user is present
 *      - [database]: defaults to monolog
 *      - [collection]: defaults to logs
 *   - [level]: level name or int value, defaults to DEBUG
 *   - [bubble]: bool, defaults to true
 *
 * - elastic_search:
 *   - elasticsearch:
 *      - id: optional if host is given
 *      - host: elastic search host name, with scheme (e.g. "https://127.0.0.1:9200")
 *      - [user]: elastic search user name
 *      - [password]: elastic search user password
 *   - [index]: index name, defaults to monolog
 *   - [document_type]: document_type, defaults to logs
 *   - [level]: level name or int value, defaults to DEBUG
 *   - [bubble]: bool, defaults to true
 *
 * - elastica:
 *   - elasticsearch:
 *      - id: optional if host is given
 *      - host: elastic search host name. Do not prepend with http(s)://
 *      - [port]: defaults to 9200
 *      - [transport]: transport protocol (http by default)
 *      - [user]: elastic search user name
 *      - [password]: elastic search user password
 *   - [index]: index name, defaults to monolog
 *   - [document_type]: document_type, defaults to logs
 *   - [level]: level name or int value, defaults to DEBUG
 *   - [bubble]: bool, defaults to true
 *
 * - redis:
 *   - redis:
 *      - id: optional if host is given
 *      - host: 127.0.0.1
 *      - password: null
 *      - port: 6379
 *      - database: 0
 *      - key_name: monolog_redis
 *
 * - predis:
 *   - redis:
 *      - id: optional if host is given
 *      - host: tcp://10.0.0.1:6379
 *      - key_name: monolog_redis
 *
 * - fingers_crossed:
 *   - handler: the wrapped handler's name
 *   - [action_level|activation_strategy]: minimum level or service id to activate the handler, defaults to WARNING
 *   - [excluded_404s]: if set, the strategy will be changed to one that excludes 404s coming from URLs matching any of those patterns
 *   - [excluded_http_codes]: if set, the strategy will be changed to one that excludes specific HTTP codes (requires Symfony Monolog bridge 4.1+)
 *   - [buffer_size]: defaults to 0 (unlimited)
 *   - [stop_buffering]: bool to disable buffering once the handler has been activated, defaults to true
 *   - [passthru_level]: level name or int value for messages to always flush, disabled by default
 *   - [bubble]: bool, defaults to true
 *
 * - filter:
 *   - handler: the wrapped handler's name
 *   - [accepted_levels]: list of levels to accept
 *   - [min_level]: minimum level to accept (only used if accepted_levels not specified)
 *   - [max_level]: maximum level to accept (only used if accepted_levels not specified)
 *   - [bubble]: bool, defaults to true
 *
 * - buffer:
 *   - handler: the wrapped handler's name
 *   - [buffer_size]: defaults to 0 (unlimited)
 *   - [level]: level name or int value, defaults to DEBUG
 *   - [bubble]: bool, defaults to true
 *   - [flush_on_overflow]: bool, defaults to false
 *
 * - deduplication:
 *   - handler: the wrapped handler's name
 *   - [store]: The file/path where the deduplication log should be kept, defaults to %kernel.cache_dir%/monolog_dedup_*
 *   - [deduplication_level]: The minimum logging level for log records to be looked at for deduplication purposes, defaults to ERROR
 *   - [time]: The period (in seconds) during which duplicate entries should be suppressed after a given log is sent through, defaults to 60
 *   - [bubble]: bool, defaults to true
 *
 * - group:
 *   - members: the wrapped handlers by name
 *   - [bubble]: bool, defaults to true
 *
 * - whatfailuregroup:
 *   - members: the wrapped handlers by name
 *   - [bubble]: bool, defaults to true
 *
 * - fallbackgroup
 *   - members: the wrapped handlers by name
 *   - [bubble]: bool, defaults to true
 *
 * - syslog:
 *   - ident: string
 *   - [facility]: defaults to 'user', use any of the LOG_* facility constant but without LOG_ prefix, e.g. user for LOG_USER
 *   - [logopts]: defaults to LOG_PID
 *   - [level]: level name or int value, defaults to DEBUG
 *   - [bubble]: bool, defaults to true
 *
 * - syslogudp:
 *   - host: syslogd host name
 *   - [port]: defaults to 514
 *   - [facility]: defaults to 'user', use any of the LOG_* facility constant but without LOG_ prefix, e.g. user for LOG_USER
 *   - [logopts]: defaults to LOG_PID
 *   - [level]: level name or int value, defaults to DEBUG
 *   - [bubble]: bool, defaults to true
 *   - [ident]: string, defaults to
 *
 * - swift_mailer:
 *   - from_email: optional if email_prototype is given
 *   - to_email: optional if email_prototype is given
 *   - subject: optional if email_prototype is given
 *   - [email_prototype]: service id of a message, defaults to a default message with the three fields above
 *   - [content_type]: optional if email_prototype is given, defaults to text/plain
 *   - [mailer]: mailer service, defaults to mailer
 *   - [level]: level name or int value, defaults to DEBUG
 *   - [bubble]: bool, defaults to true
 *   - [lazy]: use service lazy loading, bool, defaults to true
 *
 * - native_mailer:
 *   - from_email: string
 *   - to_email: string
 *   - subject: string
 *   - [level]: level name or int value, defaults to DEBUG
 *   - [bubble]: bool, defaults to true
 *   - [headers]: optional array containing additional headers: ['Foo: Bar', '...']
 *
 * - symfony_mailer:
 *   - from_email: optional if email_prototype is given
 *   - to_email: optional if email_prototype is given
 *   - subject: optional if email_prototype is given
 *   - [email_prototype]: service id of a message, defaults to a default message with the three fields above
 *   - [mailer]: mailer service id, defaults to mailer.mailer
 *   - [level]: level name or int value, defaults to DEBUG
 *   - [bubble]: bool, defaults to true
 *
 * - socket:
 *   - connection_string: string
 *   - [timeout]: float
 *   - [connection_timeout]: float
 *   - [persistent]: bool
 *   - [level]: level name or int value, defaults to DEBUG
 *   - [bubble]: bool, defaults to true
 *
 * - pushover:
 *   - token: pushover api token
 *   - user: user id or array of ids
 *   - [title]: optional title for messages, defaults to the server hostname
 *   - [level]: level name or int value, defaults to DEBUG
 *   - [bubble]: bool, defaults to true
 *   - [timeout]: float
 *   - [connection_timeout]: float
 *
 * - raven / sentry:
 *   - dsn: connection string
 *   - client_id: Raven client custom service id (optional)
 *   - [release]: release number of the application that will be attached to logs, defaults to null
 *   - [level]: level name or int value, defaults to DEBUG
 *   - [bubble]: bool, defaults to true
 *   - [auto_log_stacks]: bool, defaults to false
 *   - [environment]: string, default to null (no env specified)
 *
 * - sentry:
 *   - hub_id: Sentry hub custom service id (optional)
 *   - [fill_extra_context]: bool, defaults to false
 *
 * - newrelic:
 *   - [level]: level name or int value, defaults to DEBUG
 *   - [bubble]: bool, defaults to true
 *   - [app_name]: new relic app name, default null
 *
 * - hipchat:
 *   - token: hipchat api token
 *   - room: room id or name
 *   - [notify]: defaults to false
 *   - [nickname]: defaults to Monolog
 *   - [level]: level name or int value, defaults to DEBUG
 *   - [bubble]: bool, defaults to true
 *   - [use_ssl]: bool, defaults to true
 *   - [message_format]: text or html, defaults to text
 *   - [host]: defaults to "api.hipchat.com"
 *   - [api_version]: defaults to "v1"
 *   - [timeout]: float
 *   - [connection_timeout]: float
 *
 * - slack:
 *   - token: slack api token
 *   - channel: channel name (with starting #)
 *   - [bot_name]: defaults to Monolog
 *   - [icon_emoji]: defaults to null
 *   - [use_attachment]: bool, defaults to true
 *   - [use_short_attachment]: bool, defaults to false
 *   - [include_extra]: bool, defaults to false
 *   - [level]: level name or int value, defaults to DEBUG
 *   - [bubble]: bool, defaults to true
 *   - [timeout]: float
 *   - [connection_timeout]: float
 *
 * - slackwebhook:
 *   - webhook_url: slack webhook URL
 *   - channel: channel name (with starting #)
 *   - [bot_name]: defaults to Monolog
 *   - [icon_emoji]: defaults to null
 *   - [use_attachment]: bool, defaults to true
 *   - [use_short_attachment]: bool, defaults to false
 *   - [include_extra]: bool, defaults to false
 *   - [level]: level name or int value, defaults to DEBUG
 *   - [bubble]: bool, defaults to true
 *
 * - slackbot:
 *   - team: slack team slug
 *   - token: slackbot token
 *   - channel: channel name (with starting #)
 *   - [level]: level name or int value, defaults to DEBUG
 *   - [bubble]: bool, defaults to true
 *
 * - cube:
 *   - url: http/udp url to the cube server
 *   - [level]: level name or int value, defaults to DEBUG
 *   - [bubble]: bool, defaults to true
 *
 * - amqp:
 *   - exchange: service id of an AMQPExchange
 *   - [exchange_name]: string, defaults to log
 *   - [level]: level name or int value, defaults to DEBUG
 *   - [bubble]: bool, defaults to true
 *
 * - error_log:
 *   - [message_type]: int 0 or 4, defaults to 0
 *   - [level]: level name or int value, defaults to DEBUG
 *   - [bubble]: bool, defaults to true
 *
 * - null:
 *   - [level]: level name or int value, defaults to DEBUG
 *   - [bubble]: bool, defaults to true
 *
 * - test:
 *   - [level]: level name or int value, defaults to DEBUG
 *   - [bubble]: bool, defaults to true
 *
 * - debug:
 *   - [level]: level name or int value, defaults to DEBUG
 *   - [bubble]: bool, defaults to true
 *
 * - loggly:
 *   - token: loggly api token
 *   - [level]: level name or int value, defaults to DEBUG
 *   - [bubble]: bool, defaults to true
 *   - [tags]: tag names
 *
 * - logentries:
 *   - token: logentries api token
 *   - [use_ssl]: whether or not SSL encryption should be used, defaults to true
 *   - [level]: level name or int value, defaults to DEBUG
 *   - [bubble]: bool, defaults to true
 *   - [timeout]: float
 *   - [connection_timeout]: float
 *
 * - insightops:
 *   - token: Log token supplied by InsightOps
 *   - region: Region where InsightOps account is hosted. Could be 'us' or 'eu'. Defaults to 'us'
 *   - [use_ssl]: whether or not SSL encryption should be used, defaults to true
 *   - [level]: level name or int value, defaults to DEBUG
 *   - [bubble]: bool, defaults to true
 *
 * - flowdock:
 *   - token: flowdock api token
 *   - source: human readable identifier of the application
 *   - from_email: email address of the message sender
 *   - [level]: level name or int value, defaults to DEBUG
 *   - [bubble]: bool, defaults to true
 *
 * - rollbar:
 *   - id: RollbarNotifier service (mandatory if token is not provided)
 *   - token: rollbar api token (skip if you provide a RollbarNotifier service id)
 *   - [config]: config values from https://github.com/rollbar/rollbar-php#configuration-reference
 *   - [level]: level name or int value, defaults to DEBUG
 *   - [bubble]: bool, defaults to true
 *
 * - server_log:
 *   - host: server log host. ex: 127.0.0.1:9911
 *   - [level]: level name or int value, defaults to DEBUG
 *   - [bubble]: bool, defaults to true
 *
 * - telegram:
 *   - token: Telegram bot access token provided by BotFather
 *   - channel: Telegram channel name
 *   - [level]: level name or int value, defaults to DEBUG
 *   - [bubble]: bool, defaults to true
 *   - [parse_mode]: optional the kind of formatting that is used for the message
 *   - [disable_webpage_preview]: bool, defaults to false, disables link previews for links in the message
 *   - [disable_notification]: bool, defaults to false, sends the message silently. Users will receive a notification with no sound
 *   - [split_long_messages]: bool, defaults to false, split messages longer than 4096 bytes into multiple messages
 *   - [delay_between_messages]: bool, defaults to false, adds a 1sec delay/sleep between sending split messages
 *
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