Log to Redis Database

AppenderRedis writes log messages to a Redis data base. This lgr::Appender is created internally by RushWorker when logger thresholds are passed via rush_plan().

Value

Object of class R6::R6Class and AppenderRedis with methods for writing log events to Redis data bases.

Super classes

lgr::Filterable -> lgr::Appender -> lgr::AppenderMemory -> AppenderRedis

Methods

Public methods

• AppenderRedis$new()

• AppenderRedis$flush()

Inherited methods

• lgr::Filterable$add_filter()
• lgr::Filterable$filter()
• lgr::Filterable$remove_filter()
• lgr::Filterable$set_filters()
• lgr::Appender$set_layout()
• lgr::Appender$set_threshold()
• lgr::AppenderMemory$append()
• lgr::AppenderMemory$clear()
• lgr::AppenderMemory$format()
• lgr::AppenderMemory$set_buffer_size()
• lgr::AppenderMemory$set_flush_on_exit()
• lgr::AppenderMemory$set_flush_on_rotate()
• lgr::AppenderMemory$set_flush_threshold()
• lgr::AppenderMemory$set_should_flush()
• lgr::AppenderMemory$show()

---

Method new()

Creates a new instance of this R6 class.

Usage

AppenderRedis$new(
  config,
  key,
  threshold = NA_integer_,
  layout = lgr::LayoutJson$new(timestamp_fmt = "%Y-%m-%d %H:%M:%OS3"),
  buffer_size = 0,
  flush_threshold = "error",
  flush_on_exit = TRUE,
  flush_on_rotate = TRUE,
  should_flush = NULL,
  filters = NULL
)

Arguments

config

(redux::redis_config)
Redis configuration options.

key

(character(1))
Key of the list holding the log messages in the Redis data store.

threshold

(integer(1) | character(1))
Threshold for the log messages.

layout

(lgr::Layout)
Layout for the log messages.

buffer_size

(integer(1))
Size of the buffer.

flush_threshold

(character(1))
Threshold for flushing the buffer.

flush_on_exit

(logical(1))
Flush the buffer on exit.

flush_on_rotate

(logical(1))
Flush the buffer on rotate.

should_flush

(function)
Function that determines if the buffer should be flushed.

filters

(list)
List of filters.

---

Method flush()

Sends the buffer's contents to the Redis data store, and then clears the buffer.

Usage

AppenderRedis$flush()

Examples

# This example is not executed since Redis must be installed
# \donttest{
   config_local = redux::redis_config()

   rush_plan(
     config = config_local,
     n_workers = 2,
     lgr_thresholds = c(rush = "info"))

   rush = rsh(network_id = "test_network")
   rush
#> <Rush>
#> * Running Workers: 0
#> * Queued Tasks: 0
#> * Queued Priority Tasks: 0
#> * Running Tasks: 0
#> * Finished Tasks: 0
#> * Failed Tasks: 0
# }