Change log levels for post-contingency and action messages in Fast DC Security Analysis

docs/security/parameters.md

@@ -52,7 +52,8 @@ The default value is 1.
 
 **dcFastMode**  
 The `dcFastMode` property allows to use fast DC security analysis, based on Woodbury's formula for calculating post-contingency states, 
-when DC mode is activated.
+when DC mode is activated. Setting the log level of the `com.powsybl.openloadflow` logger to DEBUG displays the details of post-contingency 
+and post-operator strategy simulations. It is recommended to avoid enabling these logs for better performance.
 
 Please note that fast mode has a few limitations:
 - Contingencies applied on branches opened on one side are ignored. Also, if a contingency causes the loss of one side of a branch, 

src/main/java/com/powsybl/openloadflow/sa/AbstractSecurityAnalysis.java

@@ -46,6 +46,7 @@
 import com.powsybl.security.strategy.OperatorStrategy;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+import org.slf4j.event.Level;
 
 import java.util.*;
 import java.util.concurrent.*;
@@ -77,6 +78,8 @@ public abstract class AbstractSecurityAnalysis<V extends Enum<V> & Quantity, E e
 
     private static final String NOT_FOUND = "' not found in the network";
 
+    protected Level logLevel = Level.INFO; // level of the post contingency and action logs
+
     protected AbstractSecurityAnalysis(Network network, MatrixFactory matrixFactory, GraphConnectivityFactory<LfBus, LfBranch> connectivityFactory,
                                        List<StateMonitor> stateMonitors, ReportNode reportNode) {
         this.network = Objects.requireNonNull(network);
@@ -924,15 +927,15 @@ protected PostContingencyResult runPostContingencySimulation(LfNetwork network,
                 connectivityResult);
     }
 
-    protected static void logPostContingencyStart(LfNetwork network, LfContingency lfContingency) {
-        LOGGER.info("Start post contingency '{}' simulation on network {}", lfContingency.getId(), network);
+    protected void logPostContingencyStart(LfNetwork network, LfContingency lfContingency) {
+        LOGGER.atLevel(logLevel).log("Start post contingency '{}' simulation on network {}", lfContingency.getId(), network);
         LOGGER.debug("Contingency '{}' impact on network {}: remove {} buses, remove {} branches, remove {} generators, shift {} shunts, shift {} loads",
                 lfContingency.getId(), network, lfContingency.getDisabledNetwork().getBuses(), lfContingency.getDisabledNetwork().getBranchesStatus(),
                 lfContingency.getLostGenerators(), lfContingency.getShuntsShift(), lfContingency.getLostLoads());
     }
 
-    protected static void logPostContingencyEnd(LfNetwork network, LfContingency lfContingency, Stopwatch stopwatch) {
-        LOGGER.info("Post contingency '{}' simulation done on network {} in {} ms", lfContingency.getId(),
+    protected void logPostContingencyEnd(LfNetwork network, LfContingency lfContingency, Stopwatch stopwatch) {
+        LOGGER.atLevel(logLevel).log("Post contingency '{}' simulation done on network {} in {} ms", lfContingency.getId(),
                 network, stopwatch.elapsed(TimeUnit.MILLISECONDS));
     }
 
@@ -980,13 +983,13 @@ protected OperatorStrategyResult runActionSimulation(LfNetwork network, C contex
                                                             postActionsNetworkResult.getThreeWindingsTransformerResults()));
     }
 
-    protected static void logActionStart(LfNetwork network, OperatorStrategy operatorStrategy) {
-        LOGGER.info("Start operator strategy {} after contingency '{}' simulation on network {}", operatorStrategy.getId(),
+    protected void logActionStart(LfNetwork network, OperatorStrategy operatorStrategy) {
+        LOGGER.atLevel(logLevel).log("Start operator strategy {} after contingency '{}' simulation on network {}", operatorStrategy.getId(),
                 operatorStrategy.getContingencyContext().getContingencyId(), network);
     }
 
-    protected static void logActionEnd(LfNetwork network, OperatorStrategy operatorStrategy, Stopwatch stopwatch) {
-        LOGGER.info("Operator strategy {} after contingency '{}' simulation done on network {} in {} ms", operatorStrategy.getId(),
+    protected void logActionEnd(LfNetwork network, OperatorStrategy operatorStrategy, Stopwatch stopwatch) {
+        LOGGER.atLevel(logLevel).log("Operator strategy {} after contingency '{}' simulation done on network {} in {} ms", operatorStrategy.getId(),
                 operatorStrategy.getContingencyContext().getContingencyId(), network, stopwatch.elapsed(TimeUnit.MILLISECONDS));
     }
 

src/main/java/com/powsybl/openloadflow/sa/WoodburyDcSecurityAnalysis.java

@@ -42,6 +42,7 @@
 import com.powsybl.security.monitor.StateMonitor;
 import com.powsybl.security.results.*;
 import com.powsybl.security.strategy.OperatorStrategy;
+import org.slf4j.event.Level;
 
 import java.util.*;
 import java.util.function.BiFunction;
@@ -73,6 +74,7 @@ private record SecurityAnalysisSimulationResults(PreContingencyNetworkResult pre
     protected WoodburyDcSecurityAnalysis(Network network, MatrixFactory matrixFactory, GraphConnectivityFactory<LfBus, LfBranch> connectivityFactory,
                                          List<StateMonitor> stateMonitors, ReportNode reportNode) {
         super(network, matrixFactory, connectivityFactory, stateMonitors, reportNode);
+        this.logLevel = Level.DEBUG;
     }
 
     @Override