ibessonov commented on code in PR #7885:
URL: https://github.com/apache/ignite-3/pull/7885#discussion_r2999370244


##########
modules/raft-api/src/test/java/org/apache/ignite/internal/raft/configuration/LogStorageConfigurationValidatorTest.java:
##########
@@ -18,91 +18,127 @@
 package org.apache.ignite.internal.raft.configuration;
 
 import static 
org.apache.ignite.internal.configuration.validation.TestValidationUtil.mockValidationContext;
-import static 
org.apache.ignite.internal.configuration.validation.TestValidationUtil.validate;
 import static 
org.apache.ignite.internal.raft.configuration.LogStorageConfigurationSchema.DEFAULT_MAX_CHECKPOINT_QUEUE_SIZE;
 import static 
org.apache.ignite.internal.raft.configuration.LogStorageConfigurationSchema.DEFAULT_SEGMENT_FILE_SIZE_BYTES;
+import static 
org.apache.ignite.internal.raft.configuration.LogStorageConfigurationSchema.DEFAULT_SOFT_LOG_SIZE_LIMIT_BYTES;
 import static 
org.apache.ignite.internal.raft.configuration.LogStorageConfigurationSchema.UNSPECIFIED_MAX_LOG_ENTRY_SIZE;
-import static org.mockito.Mockito.mock;
+import static org.apache.ignite.internal.util.ArrayUtils.STRING_EMPTY_ARRAY;
 
+import org.apache.ignite.internal.configuration.validation.TestValidationUtil;
 import org.apache.ignite.internal.testframework.BaseIgniteAbstractTest;
+import org.jetbrains.annotations.Nullable;
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.Mock;
+import org.mockito.junit.jupiter.MockitoExtension;
 
+@ExtendWith(MockitoExtension.class)
 class LogStorageConfigurationValidatorTest extends BaseIgniteAbstractTest {
+    @Mock
+    private static ValidLogStorageConfiguration 
VALID_LOG_STORAGE_CONFIGURATION;
+
     private final LogStorageConfigurationValidator validator = new 
LogStorageConfigurationValidator();
 
     @Test
     void unspecifiedLogEntrySizeIsValid() {
         var config = new MockLogStorageView(
                 DEFAULT_MAX_CHECKPOINT_QUEUE_SIZE,
                 DEFAULT_SEGMENT_FILE_SIZE_BYTES,
-                UNSPECIFIED_MAX_LOG_ENTRY_SIZE
+                UNSPECIFIED_MAX_LOG_ENTRY_SIZE,
+                DEFAULT_SOFT_LOG_SIZE_LIMIT_BYTES
         );
 
-        validate(
-                validator,
-                mock(ValidLogStorageConfiguration.class),
-                mockValidationContext(null, config)
-        );
+        validate(config);
     }
 
     @Test
     void correctLogEntrySizeIsValid() {
         var config = new MockLogStorageView(
                 DEFAULT_MAX_CHECKPOINT_QUEUE_SIZE,
                 DEFAULT_SEGMENT_FILE_SIZE_BYTES,
-                (int) (DEFAULT_SEGMENT_FILE_SIZE_BYTES * 0.9)
+                (int) (DEFAULT_SEGMENT_FILE_SIZE_BYTES * 0.9),
+                DEFAULT_SOFT_LOG_SIZE_LIMIT_BYTES
         );
 
-        validate(
-                validator,
-                mock(ValidLogStorageConfiguration.class),
-                mockValidationContext(null, config)
-        );
+        validate(config);
     }
 
     @Test
     void zeroLogEntrySizeIsNotValid() {
         var config = new MockLogStorageView(
                 DEFAULT_MAX_CHECKPOINT_QUEUE_SIZE,
                 DEFAULT_SEGMENT_FILE_SIZE_BYTES,
-                0
+                0,
+                DEFAULT_SOFT_LOG_SIZE_LIMIT_BYTES
         );
 
-        validate(
-                validator,
-                mock(ValidLogStorageConfiguration.class),
-                mockValidationContext(null, config),
-                "Maximum log entry size must be positive, got 0."
-        );
+        validate(config, "Maximum log entry size must be positive 
[maxEntrySize=0 bytes].");
     }
 
     @Test
     void logEntrySizeEqualToSegmentFileSizeIsNotValid() {
         var config = new MockLogStorageView(
                 DEFAULT_MAX_CHECKPOINT_QUEUE_SIZE,
                 10,
-                10
+                10,
+                DEFAULT_SOFT_LOG_SIZE_LIMIT_BYTES
+        );
+
+        validate(config, "Maximum log entry size is too big [maxEntrySize=10 
bytes, maxAllowedEntrySize=9 bytes].");
+    }
+
+    @Test
+    void softLimitLessThanSegmentFileSizeIsNotValid() {
+        var config = new MockLogStorageView(
+                DEFAULT_MAX_CHECKPOINT_QUEUE_SIZE,
+                1000,
+                UNSPECIFIED_MAX_LOG_ENTRY_SIZE,
+                500
         );
 
-        validate(
+        validate(config, "Soft log size limit must be at least the segment 
file size [softLimit=500 bytes, segmentFileSize=1000 bytes].");
+    }
+
+    @Test
+    void softLimitEqualToSegmentFileSizeIsValid() {
+        var config = new MockLogStorageView(
+                DEFAULT_MAX_CHECKPOINT_QUEUE_SIZE,
+                1000,
+                UNSPECIFIED_MAX_LOG_ENTRY_SIZE,
+                1000
+        );
+
+        validate(config);
+    }
+
+    private void validate(LogStorageView config) {
+        validate(config, STRING_EMPTY_ARRAY);
+    }
+
+    private void validate(LogStorageView config, String @Nullable ... 
errorMessagePrefixes) {
+        TestValidationUtil.validate(
                 validator,
-                mock(ValidLogStorageConfiguration.class),
+                VALID_LOG_STORAGE_CONFIGURATION,
                 mockValidationContext(null, config),
-                "Maximum log entry size is too big (10 bytes), maximum allowed 
log entry size is 9 bytes."
+                errorMessagePrefixes
         );
     }
 
     private static class MockLogStorageView implements LogStorageView {

Review Comment:
   Should we use configuration extension instead of a mock?



##########
modules/raft-api/src/main/java/org/apache/ignite/internal/raft/configuration/LogStorageConfigurationValidator.java:
##########
@@ -41,7 +42,7 @@ private static void validateLogEntrySize(LogStorageView 
config, ValidationContex
         }
 
         if (maxEntrySize <= 0) {
-            String errorMsg = String.format("Maximum log entry size must be 
positive, got %d.", maxEntrySize);
+            String errorMsg = String.format("Maximum log entry size must be 
positive [maxEntrySize=%d bytes].", maxEntrySize);

Review Comment:
   I don't think we need a dot after `]`, but that's not too important I guess



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