Introduce BufferedOutput.sendBufferedLog

Sources/Puree/Logger.swift

@@ -79,6 +79,12 @@ public final class Logger {
         }
     }
 
+    public func sendBufferedLogs() {
+        dispatchQueue.sync {
+            outputs.forEach { ($0 as? BufferedOutput)?.sendBufferedLogs() }
+        }
+    }
+
     public func suspend() {
         dispatchQueue.sync {
             outputs.forEach { $0.suspend() }

Sources/Puree/Output/BufferedOutput.swift

@@ -71,17 +71,13 @@ open class BufferedOutput: InstantiatableOutput {
 
     public func start() {
         reloadLogStore()
-        readWriteQueue.sync {
-            flush()
-        }
+        sendBufferedLogs()
         setUpTimer()
     }
 
     public func resume() {
         reloadLogStore()
-        readWriteQueue.sync {
-            flush()
-        }
+        sendBufferedLogs()
         setUpTimer()
     }
 
@@ -100,19 +96,25 @@ open class BufferedOutput: InstantiatableOutput {
             logStore.add(log, for: storageGroup, completion: nil)
 
             if buffer.count >= logLimit {
-                flush()
+                writeBufferedLogs()
             } else if let logSizeLimit = configuration.chunkDataSizeLimit {
                 let currentBufferedLogSize = buffer.reduce(0, { (size, log) -> Int in
                     size + (log.userData?.count ?? 0)
                 })
 
                 if currentBufferedLogSize >= logSizeLimit {
-                    flush()
+                    writeBufferedLogs()
                 }
             }
         }
     }
 
+    public func sendBufferedLogs() {
+        readWriteQueue.sync {
+            writeBufferedLogs()
+        }
+    }
+
     open func write(_ chunk: Chunk, completion: @escaping (Bool) -> Void) {
         completion(false)
     }
@@ -138,12 +140,12 @@ open class BufferedOutput: InstantiatableOutput {
         if let lastFlushDate = lastFlushDate {
             if currentDate.timeIntervalSince(lastFlushDate) > flushInterval {
                 readWriteQueue.async {
-                    self.flush()
+                    self.writeBufferedLogs()
                 }
             }
         } else {
             readWriteQueue.async {
-                self.flush()
+                self.writeBufferedLogs()
             }
         }
     }
@@ -165,7 +167,7 @@ open class BufferedOutput: InstantiatableOutput {
         }
     }
 
-    private func flush() {
+    private func writeBufferedLogs() {
         dispatchPrecondition(condition: .onQueue(readWriteQueue))
 
         lastFlushDate = currentDate

Tests/PureeTests/Output/BufferedOutputTests.swift

@@ -63,6 +63,20 @@ class BufferedOutputTests: XCTestCase {
         XCTAssertEqual(output.calledWriteCount, 1)
     }
 
+    func testBufferedOutputSendBufferedLogs() {
+        output.configuration.logEntryCountLimit = 10
+
+        XCTAssertEqual(logStore.logs(for: "pv_TestingBufferedOutput").count, 0)
+        XCTAssertEqual(output.calledWriteCount, 0)
+
+        output.emit(log: makeLog())
+        output.sendBufferedLogs()
+        output.waitUntilCurrentQueuedJobFinished()
+
+        XCTAssertEqual(logStore.logs(for: "pv_TestingBufferedOutput").count, 0)
+        XCTAssertEqual(output.calledWriteCount, 1)
+    }
+
     func testBufferedOutputFlushedByInterval() {
         output.configuration.logEntryCountLimit = 10
         output.configuration.flushInterval = 1
@@ -87,7 +101,7 @@ class BufferedOutputTests: XCTestCase {
         XCTAssertEqual(output.calledWriteCount, 0)
 
         output.writeCallback = {
-            XCTFail("flush should not be called")
+            XCTFail("writeBufferedLogs should not be called")
         }
         sleep(2)
     }
@@ -291,6 +305,28 @@ class BufferedOutputAsyncTests: XCTestCase {
         XCTAssertEqual(output.calledWriteCount, 1)
     }
 
+    func testBufferedOutputSendBufferedLogs() {
+        output.configuration.logEntryCountLimit = 10
+
+        let expectation = self.expectation(description: "async writing")
+        output.writeCallback = {
+            expectation.fulfill()
+        }
+        output.waitUntilCurrentCompletionBlock = { [weak self] in
+            self?.wait(for: [expectation], timeout: 1.0)
+        }
+
+        XCTAssertEqual(logStore.logs(for: "pv_TestingBufferedOutput").count, 0)
+        XCTAssertEqual(output.calledWriteCount, 0)
+
+        output.emit(log: makeLog())
+        output.sendBufferedLogs()
+        output.waitUntilCurrentQueuedJobFinished()
+
+        XCTAssertEqual(logStore.logs(for: "pv_TestingBufferedOutput").count, 0)
+        XCTAssertEqual(output.calledWriteCount, 1)
+    }
+
     func testBufferedOutputFlushedByInterval() {
         output.configuration.logEntryCountLimit = 10
         output.configuration.flushInterval = 1
@@ -315,7 +351,7 @@ class BufferedOutputAsyncTests: XCTestCase {
         XCTAssertEqual(output.calledWriteCount, 0)
 
         output.writeCallback = {
-            XCTFail("flush should not be called")
+            XCTFail("writeBufferedLogs should not be called")
         }
         sleep(2)
     }