Add ntfy appender

DESCRIPTION

@@ -1,13 +1,15 @@
 Type: Package
 Package: logger
 Title: A Lightweight, Modern and Flexible Logging Utility
-Version: 0.4.1.9000
-Date: 2025-09-09
+Version: 0.4.1.9001
+Date: 2025-10-29
 Authors@R: c(
     person("Gergely", "Daróczi", , "[email protected]", role = c("aut", "cre"),
            comment = c(ORCID = "0000-0003-3149-8537")),
     person("Hadley", "Wickham", , "[email protected]", role = "aut",
            comment = c(ORCID = "0000-0003-4757-117X")),
+    person("Jonathan", "Carroll", , "[email protected]", role = "ctb", 
+           comment = c(ORCID = "0000-0002-1404-5264")),       
     person("Spare Cores", role = "fnd"),
     person("System1", role = "fnd")
   )
@@ -31,6 +33,7 @@ Suggests:
     jsonlite,
     knitr,
     mirai (>= 1.3.0),
+    ntfy,
     pander,
     parallel,
     R.utils,
@@ -54,4 +57,4 @@ Config/testthat/edition: 3
 Config/testthat/parallel: TRUE
 Encoding: UTF-8
 Roxygen: list(markdown = TRUE)
-RoxygenNote: 7.3.2
+RoxygenNote: 7.3.3

NAMESPACE

@@ -18,6 +18,7 @@ export(appender_async)
 export(appender_console)
 export(appender_file)
 export(appender_kinesis)
+export(appender_ntfy)
 export(appender_pushbullet)
 export(appender_slack)
 export(appender_stderr)

NEWS.md

@@ -1,5 +1,9 @@
 # logger 0.4.1.9000 (development version)
 
+New features and quality of life improvements:
+
+* Added `appender_ntfy()` to use {ntfy} as an appender (#240, @jonocarroll)
+
 # logger 0.4.1 (2025-09-08)
 
 New features and quality of life improvements:

R/appenders.R

@@ -232,6 +232,34 @@ appender_pushbullet <- function(...) {
 }
 
 
+#' Send log messages to ntfy
+#' @param title notification title
+#' @param tags emoji (or general tag) for notification. See [ntfy::emoji]
+#' @param ... extra parameters passed to [ntfy::ntfy_send] such as
+#'     `priority`, `topic`, etc.
+#' @details Configure server and topic via environment variables. See
+#' [ntfy::ntfy_topic()] for details
+#' @export
+#' @note This functionality depends on the \pkg{ntfy} package.
+#' @family log_appenders
+#' @export
+appender_ntfy <- function(title = "{logger}",
+                          tags = c("memo"),
+                          ...) {
+  fail_on_missing_package("ntfy")
+  force(title)
+  force(tags)
+
+  structure(
+    function(lines) {
+      ntfy::ntfy_send(title = title, tags = tags, message = paste(lines, sep = "\n"), ...)
+    },
+    generator = deparse(match.call())
+  )
+}
+
+
+
 #' Send log messages to a Telegram chat
 #' @param chat_id Unique identifier for the target chat or username of
 #'     the target channel (in the format @channelusername)