feat(log): re-export the log crate (tauri-apps#2965)

* feat(log): re-export the log crate

* code review

* Move emit_trace

---------

Co-authored-by: Tony <[email protected]>

Author: lucasfernog

.changes/re-export-log.md

@@ -0,0 +1,6 @@
+---
+"log": minor
+"log-js": minor
+---
+
+Re-export the log crate.

plugins/log/src/commands.rs

@@ -0,0 +1,73 @@
+// Copyright 2019-2023 Tauri Programme within The Commons Conservancy
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-License-Identifier: MIT
+
+use std::collections::HashMap;
+
+use log::RecordBuilder;
+
+use crate::{LogLevel, WEBVIEW_TARGET};
+
+#[tauri::command]
+pub fn log(
+    level: LogLevel,
+    message: String,
+    location: Option<&str>,
+    file: Option<&str>,
+    line: Option<u32>,
+    key_values: Option<HashMap<String, String>>,
+) {
+    let level = log::Level::from(level);
+
+    let target = if let Some(location) = location {
+        format!("{WEBVIEW_TARGET}:{location}")
+    } else {
+        WEBVIEW_TARGET.to_string()
+    };
+
+    let mut builder = RecordBuilder::new();
+    builder.level(level).target(&target).file(file).line(line);
+
+    let key_values = key_values.unwrap_or_default();
+    let mut kv = HashMap::new();
+    for (k, v) in key_values.iter() {
+        kv.insert(k.as_str(), v.as_str());
+    }
+    builder.key_values(&kv);
+    #[cfg(feature = "tracing")]
+    emit_trace(level, &message, location, file, line, &kv);
+
+    log::logger().log(&builder.args(format_args!("{message}")).build());
+}
+
+// Target becomes default and location is added as a parameter
+#[cfg(feature = "tracing")]
+fn emit_trace(
+    level: log::Level,
+    message: &String,
+    location: Option<&str>,
+    file: Option<&str>,
+    line: Option<u32>,
+    kv: &HashMap<&str, &str>,
+) {
+    macro_rules! emit_event {
+        ($level:expr) => {
+            tracing::event!(
+                target: WEBVIEW_TARGET,
+                $level,
+                message = %message,
+                location = location,
+                file,
+                line,
+                ?kv
+            )
+        };
+    }
+    match level {
+        log::Level::Error => emit_event!(tracing::Level::ERROR),
+        log::Level::Warn => emit_event!(tracing::Level::WARN),
+        log::Level::Info => emit_event!(tracing::Level::INFO),
+        log::Level::Debug => emit_event!(tracing::Level::DEBUG),
+        log::Level::Trace => emit_event!(tracing::Level::TRACE),
+    }
+}

plugins/log/src/lib.rs

@@ -10,12 +10,10 @@
 )]
 
 use fern::{Filter, FormatCallback};
-use log::{logger, RecordBuilder};
 use log::{LevelFilter, Record};
 use serde::Serialize;
 use serde_repr::{Deserialize_repr, Serialize_repr};
 use std::borrow::Cow;
-use std::collections::HashMap;
 use std::{
     fmt::Arguments,
     fs::{self, File},
@@ -30,6 +28,9 @@ use tauri::{AppHandle, Emitter};
 use time::{macros::format_description, OffsetDateTime};
 
 pub use fern;
+pub use log;
+
+mod commands;
 
 pub const WEBVIEW_TARGET: &str = "webview";
 
@@ -206,70 +207,6 @@ impl Target {
     }
 }
 
-// Target becomes default and location is added as a parameter
-#[cfg(feature = "tracing")]
-fn emit_trace(
-    level: log::Level,
-    message: &String,
-    location: Option<&str>,
-    file: Option<&str>,
-    line: Option<u32>,
-    kv: &HashMap<&str, &str>,
-) {
-    macro_rules! emit_event {
-        ($level:expr) => {
-            tracing::event!(
-                target: WEBVIEW_TARGET,
-                $level,
-                message = %message,
-                location = location,
-                file,
-                line,
-                ?kv
-            )
-        };
-    }
-    match level {
-        log::Level::Error => emit_event!(tracing::Level::ERROR),
-        log::Level::Warn => emit_event!(tracing::Level::WARN),
-        log::Level::Info => emit_event!(tracing::Level::INFO),
-        log::Level::Debug => emit_event!(tracing::Level::DEBUG),
-        log::Level::Trace => emit_event!(tracing::Level::TRACE),
-    }
-}
-
-#[tauri::command]
-fn log(
-    level: LogLevel,
-    message: String,
-    location: Option<&str>,
-    file: Option<&str>,
-    line: Option<u32>,
-    key_values: Option<HashMap<String, String>>,
-) {
-    let level = log::Level::from(level);
-
-    let target = if let Some(location) = location {
-        format!("{WEBVIEW_TARGET}:{location}")
-    } else {
-        WEBVIEW_TARGET.to_string()
-    };
-
-    let mut builder = RecordBuilder::new();
-    builder.level(level).target(&target).file(file).line(line);
-
-    let key_values = key_values.unwrap_or_default();
-    let mut kv = HashMap::new();
-    for (k, v) in key_values.iter() {
-        kv.insert(k.as_str(), v.as_str());
-    }
-    builder.key_values(&kv);
-    #[cfg(feature = "tracing")]
-    emit_trace(level, &message, location, file, line, &kv);
-
-    logger().log(&builder.args(format_args!("{message}")).build());
-}
-
 pub struct Builder {
     dispatch: fern::Dispatch,
     rotation_strategy: RotationStrategy,
@@ -528,7 +465,7 @@ impl Builder {
     }
 
     fn plugin_builder<R: Runtime>() -> plugin::Builder<R> {
-        plugin::Builder::new("log").invoke_handler(tauri::generate_handler![log])
+        plugin::Builder::new("log").invoke_handler(tauri::generate_handler![commands::log])
     }
 
     #[allow(clippy::type_complexity)]