Added test for loading Tjahzi configuration from property file based config file.

log4j2-appender/src/test/java/pl/tkowalcz/tjahzi/log4j2/LokiPropertiesFileTest.java

@@ -0,0 +1,42 @@
+package pl.tkowalcz.tjahzi.log4j2;
+
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+import org.junit.jupiter.api.Test;
+import pl.tkowalcz.tjahzi.log4j2.infra.IntegrationTest;
+
+import static org.hamcrest.CoreMatchers.*;
+import static pl.tkowalcz.tjahzi.log4j2.infra.LokiAssert.assertThat;
+
+class LokiPropertiesFileTest extends IntegrationTest {
+
+    @Test
+    void shouldSendData() {
+        // Given
+        loadConfig("appender-test-with-log-label-set.properties");
+        Logger logger = LogManager.getLogger(LokiPropertiesFileTest.class);
+
+        String expectedLogLine = "Hello World";
+
+        // When
+        logger.info(expectedLogLine);
+
+        // Then
+        assertThat(loki)
+                .returns(response -> response
+                        .body("data.result.size()", equalTo(1))
+                        .body("data.result[0].stream.server", equalTo("127.0.0.1"))
+                        .body("data.result[0].stream.source", equalTo("log4j"))
+                        .body(
+                                "data.result.values",
+                                hasItems(
+                                        hasItems(
+                                                hasItems(
+                                                        containsString("INFO LokiPropertiesFileTest - " + expectedLogLine)
+                                                )
+                                        )
+                                )
+                        )
+                );
+    }
+}

log4j2-appender/src/test/resources/appender-test-with-log-label-set.properties

@@ -0,0 +1,25 @@
+packages="pl.tkowalcz.tjahzi.log4j2"
+
+# Allows this configuration to be modified at runtime. The file will be checked every 30 seconds.
+monitorInterval=30
+
+rootLogger.level = INFO
+rootLogger.appenderRefs = loki
+rootLogger.appenderRef.loki.ref = loki-appender
+
+appender.loki.name = loki-appender
+appender.loki.type = Loki
+appender.loki.host = ${sys:loki.host}
+appender.loki.port = ${sys:loki.port}
+appender.loki.logLevelLabel = log_level
+
+appender.loki.layout.type = PatternLayout
+appender.loki.layout.pattern = %X{tid} [%t] %d{MM-dd HH:mm:ss.SSS} %5p %c{1} - %m%n%exception{full}
+
+appender.loki.labels[0].type = label
+appender.loki.labels[0].name = server
+appender.loki.labels[0].value = 127.0.0.1
+
+appender.loki.labels[1].type = label
+appender.loki.labels[1].name = source
+appender.loki.labels[1].value = log4j