Add call tree csv links for easier imports into graph db

Author: galderz

substratevm/src/com.oracle.graal.pointsto/src/com/oracle/graal/pointsto/reports/CallTreePrinter.java

@@ -31,7 +31,12 @@
 import static com.oracle.graal.pointsto.reports.ReportUtils.invokeComparator;
 import static com.oracle.graal.pointsto.reports.ReportUtils.methodComparator;
 
+import java.io.IOException;
 import java.io.PrintWriter;
+import java.nio.file.Files;
+import java.nio.file.LinkOption;
+import java.nio.file.Path;
+import java.nio.file.Paths;
 import java.util.ArrayDeque;
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -46,6 +51,7 @@
 import java.util.Objects;
 import java.util.Set;
 import java.util.concurrent.atomic.AtomicInteger;
+import java.util.function.Consumer;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 import java.util.stream.Collectors;
@@ -333,26 +339,33 @@ private static void printCsvFiles(Map<AnalysisMethod, MethodNode> methodToNode,
             walkNodes(node, directEdges, virtualEdges, overridenByEdges, virtualNodes, nonVirtualNodes, virtualNodeId);
         }
 
-        ReportUtils.report("call tree for vm entry point", reportsPath, "csv_call_tree_vm_" + reportName, "csv",
-                        CallTreePrinter::printVMEntryPoint);
-
-        ReportUtils.report("call tree for methods", reportsPath, "csv_call_tree_methods_" + reportName, "csv",
-                        writer -> printMethodNodes(methodToNode.values(), writer));
-
-        ReportUtils.report("call tree for virtual methods", reportsPath, "csv_call_tree_virtual_methods_" + reportName, "csv",
-                        writer -> printVirtualNodes(virtualNodes, writer));
-
-        ReportUtils.report("call tree for entry points", reportsPath, "csv_call_tree_entry_points_" + reportName, "csv",
-                        writer -> printEntryPointIds(entryPointIds, writer));
-
-        ReportUtils.report("call tree for direct edges", reportsPath, "csv_call_tree_direct_edges_" + reportName, "csv",
-                        writer -> printBciEdges(directEdges, writer));
-
-        ReportUtils.report("call tree for overriden by edges", reportsPath, "csv_call_tree_override_by_edges_" + reportName, "csv",
-                        writer -> printNonBciEdges(overridenByEdges, writer));
+        toCsvFile("call tree for vm entry point", reportsPath, "csv_call_tree_vm", reportName, CallTreePrinter::printVMEntryPoint);
+        toCsvFile("call tree for methods", reportsPath, "csv_call_tree_methods", reportName, writer -> printMethodNodes(methodToNode.values(), writer));
+        toCsvFile("call tree for virtual methods", reportsPath, "csv_call_tree_virtual_methods", reportName, writer -> printVirtualNodes(virtualNodes, writer));
+        toCsvFile("call tree for entry points", reportsPath, "csv_call_tree_entry_points", reportName, writer -> printEntryPointIds(entryPointIds, writer));
+        toCsvFile("call tree for direct edges", reportsPath, "csv_call_tree_direct_edges", reportName, writer -> printBciEdges(directEdges, writer));
+        toCsvFile("call tree for overriden by edges", reportsPath, "csv_call_tree_override_by_edges", reportName, writer -> printNonBciEdges(overridenByEdges, writer));
+        toCsvFile("call tree for virtual edges", reportsPath, "csv_call_tree_virtual_edges", reportName, writer -> printBciEdges(virtualEdges, writer));
+    }
+
+    private static void toCsvFile(String description, String reportsPath, String prefix, String reportName, Consumer<PrintWriter> reporter) {
+        final String name = prefix + "_" + reportName;
+        final String csvFile = ReportUtils.report(description, reportsPath, name, "csv", reporter);
+        final Path csvLink = Paths.get(reportsPath).resolve(prefix + ".csv");
+
+        if (Files.exists(csvLink, LinkOption.NOFOLLOW_LINKS)) {
+            try {
+                Files.delete(csvLink);
+            } catch (IOException e) {
+                // Ignore
+            }
+        }
 
-        ReportUtils.report("call tree for virtual edges", reportsPath, "csv_call_tree_virtual_edges_" + reportName, "csv",
-                        writer -> printBciEdges(virtualEdges, writer));
+        try {
+            Files.createSymbolicLink(csvLink, Paths.get(csvFile));
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
     }
 
     private static void printVMEntryPoint(PrintWriter writer) {

substratevm/src/com.oracle.graal.pointsto/src/com/oracle/graal/pointsto/reports/ReportUtils.java

@@ -75,10 +75,11 @@ public class ReportUtils {
      * @param extension the extension of the report
      * @param reporter a consumer that writes to a PrintWriter
      */
-    public static void report(String description, String path, String name, String extension, Consumer<PrintWriter> reporter) {
+    public static String report(String description, String path, String name, String extension, Consumer<PrintWriter> reporter) {
         String fileName = timeStampedFileName(name, extension);
         Path reportDir = Paths.get(path);
         reportImpl(description, reportDir, fileName, reporter);
+        return fileName;
     }
 
     public static String timeStampedFileName(String name, String extension) {