add Log Interceptor

Author: abolfazlabbasi

README.md

@@ -13,6 +13,7 @@ The FileLogger is a library for saving logs on Files with custom-formatter on ba
 - Compress and send logs(Email and messengers)
 - Startup logs
 - Retention Policy (Size, Count, Time to Live)
+- Log interception
 
 ## TODO
 1. Add C++ NDK support

app/src/main/java/abbasi/android/filelogger/sample/AppLogInterceptor.kt

@@ -0,0 +1,19 @@
+package abbasi.android.filelogger.sample
+
+import abbasi.android.filelogger.file.LogLevel
+import abbasi.android.filelogger.interceptor.LogInterceptor
+
+class AppLogInterceptor : LogInterceptor {
+    override fun intercept(
+        level: LogLevel,
+        tag: String,
+        message: String,
+        e: Throwable?
+    ): String {
+        return if (level is LogLevel.Info) {
+            message
+        } else {
+            "****************************"
+        }
+    }
+}

app/src/main/java/abbasi/android/filelogger/sample/MainActivity.kt

@@ -25,6 +25,7 @@ class MainActivity : AppCompatActivity() {
                 val config = Config.Builder(it.path)
                     .setDefaultTag("TAG")
                     .setLogcatEnable(true)
+                    .setLogInterceptor(AppLogInterceptor())
                     .setRetentionPolicy(RetentionPolicy.TimeToLive(durationInMillis = 1000 * 60 * 1))
                     .setStartupData(
                         mapOf(

filelogger/src/main/java/abbasi/android/filelogger/FileLogger.kt

@@ -20,7 +20,7 @@ import java.io.File
 object FileLogger {
 
     private var initialized = false
-    private var isEnable: Boolean = true
+    var isEnable: Boolean = true
 
     private var config: Config? = null
     private lateinit var retentionChecker: RetentionPolicyChecker
@@ -120,7 +120,11 @@ object FileLogger {
         throwable: Throwable? = null
     ) = fileWriter.let { writer ->
         logQueue.postRunnable {
-            val stringBuilder = StringBuilder("$logLevel/$tag: $msg\n")
+            val message = config?.logInterceptor?.intercept(
+                logLevel, tag.orEmpty(), msg.orEmpty(), throwable
+            ) ?: msg
+
+            val stringBuilder = StringBuilder("$logLevel/$tag: $message\n")
 
             throwable?.let { exception ->
                 exception.stackTrace.forEach { element ->
@@ -132,10 +136,6 @@ object FileLogger {
         }
     }
 
-    fun setEnable(isEnable: Boolean) {
-        this.isEnable = isEnable
-    }
-
     fun deleteFiles() = checkBlock {
         i(msg = "FileLogger delete files called")
         logFileManager.deleteLogsDir(fileWriter.openedFilePath)

filelogger/src/main/java/abbasi/android/filelogger/config/Config.kt

@@ -9,6 +9,7 @@ package abbasi.android.filelogger.config
 import abbasi.android.filelogger.config.Constance.Companion.DEFAULT_PATTERN
 import abbasi.android.filelogger.config.Constance.Companion.DEFAULT_TAG
 import abbasi.android.filelogger.config.Constance.Companion.LOGCAT_ENABLE
+import abbasi.android.filelogger.interceptor.LogInterceptor
 
 class Config private constructor(
     val directory: String,
@@ -17,6 +18,7 @@ class Config private constructor(
     val dataFormatterPattern: String,
     val startupData: Map<String, String>?,
     val retentionPolicy: RetentionPolicy?,
+    val logInterceptor: LogInterceptor?,
 ) {
 
     class Builder(private val directory: String) {
@@ -25,11 +27,13 @@ class Config private constructor(
         private var dataFormatterPattern: String = DEFAULT_PATTERN
         private var startupData: Map<String, String>? = null
         private var retentionPolicy: RetentionPolicy? = null
+        private var logInterceptor: LogInterceptor? = null
 
         fun setDefaultTag(defaultTag: String) = apply { this.defaultTag = defaultTag }
         fun setLogcatEnable(logcatEnable: Boolean) = apply { this.logcatEnable = logcatEnable }
         fun setStartupData(startupData: Map<String, String>?) = apply { this.startupData = startupData }
         fun setRetentionPolicy(retentionPolicy: RetentionPolicy) = apply { this.retentionPolicy = retentionPolicy }
+        fun setLogInterceptor(logInterceptor: LogInterceptor) = apply { this.logInterceptor = logInterceptor }
 
         fun setDataFormatterPattern(pattern: String) = apply {
             this.dataFormatterPattern = pattern.replace("/", "-")
@@ -42,12 +46,13 @@ class Config private constructor(
         }
 
         fun build() = Config(
-            directory,
-            defaultTag,
-            logcatEnable,
-            dataFormatterPattern,
-            startupData,
-            retentionPolicy,
+            directory = directory,
+            defaultTag = defaultTag,
+            logcatEnable = logcatEnable,
+            dataFormatterPattern = dataFormatterPattern,
+            startupData = startupData,
+            retentionPolicy = retentionPolicy,
+            logInterceptor = logInterceptor
         )
     }
 }

filelogger/src/main/java/abbasi/android/filelogger/file/LogLevel.kt

@@ -6,26 +6,18 @@
 
 package abbasi.android.filelogger.file
 
-internal sealed class LogLevel {
+sealed class LogLevel {
     object Info : LogLevel()
     object Error : LogLevel()
     object Warning : LogLevel()
     object Debug : LogLevel()
 
     override fun toString(): String {
         return when (this) {
-            is Info -> {
-                "I"
-            }
-            is Error -> {
-                "E"
-            }
-            is Warning -> {
-                "W"
-            }
-            is Debug -> {
-                "D"
-            }
+            is Info -> "I"
+            is Error -> "E"
+            is Warning -> "W"
+            is Debug -> "D"
         }
     }
 }

filelogger/src/main/java/abbasi/android/filelogger/interceptor/LogInterceptor.kt

@@ -0,0 +1,7 @@
+package abbasi.android.filelogger.interceptor
+
+import abbasi.android.filelogger.file.LogLevel
+
+interface LogInterceptor {
+    fun intercept(level: LogLevel, tag: String, message: String, e: Throwable?): String
+}