Repair Shared Stops Validator

.github/workflows/maven.yml

@@ -33,10 +33,10 @@ jobs:
           java-version: 19
           distribution: 'temurin'
       # Install node 14 for running e2e tests (and for maven-semantic-release).
-      - name: Use Node.js 18.x
+      - name: Use Node.js 20.x
         uses: actions/setup-node@v1
         with:
-          node-version: 18.x
+          node-version: 20.x
       - name: Start MongoDB
         uses: supercharge/[email protected]
         with:

pom.xml

@@ -272,7 +272,7 @@
             <groupId>com.github.ibi-group</groupId>
             <artifactId>gtfs-lib</artifactId>
             <!-- Latest dev build on jitpack.io -->
-            <version>3fa0da9</version>
+            <version>761456fdc66bc1b72fc860b5e5853b0f2904e009</version>
             <!-- Exclusions added in order to silence SLF4J warnings about multiple bindings:
                 http://www.slf4j.org/codes.html#multiple_bindings
             -->

src/main/java/com/conveyal/datatools/manager/jobs/validation/SharedStopsHeader.java

@@ -0,0 +1,37 @@
+package com.conveyal.datatools.manager.jobs.validation;
+
+import java.util.Map;
+
+public enum SharedStopsHeader {
+
+    STOP_GROUP_ID_INDEX("stop_group_id"),
+
+    STOP_ID_INDEX("stop_id"),
+
+    IS_PRIMARY_INDEX("is_primary"),
+
+    FEED_ID_INDEX("feed_id");
+
+    public final String headerName;
+
+    SharedStopsHeader(String name) {
+        this.headerName = name;
+    }
+
+    public String getHeaderName() {
+        return headerName;
+    }
+
+    public static SharedStopsHeader fromValue(String headerName) {
+        for (SharedStopsHeader sharedStopsHeader : SharedStopsHeader.values()) {
+            if (sharedStopsHeader.getHeaderName().equalsIgnoreCase(headerName)) {
+                return sharedStopsHeader;
+            }
+        }
+        throw new UnsupportedOperationException(String.format("Unknown shared stops header: %s", headerName));
+    }
+
+    public static boolean hasRequiredHeaders(Map<SharedStopsHeader, Integer> headerIndices) {
+        return headerIndices.size() == SharedStopsHeader.values().length;
+    }
+}

src/main/java/com/conveyal/datatools/manager/jobs/validation/SharedStopsValidator.java

@@ -13,11 +13,13 @@
 
 import java.io.IOException;
 import java.util.ArrayList;
-import java.util.HashMap;
+import java.util.EnumMap;
 import java.util.HashSet;
 import java.util.List;
-import java.util.Set;
+import java.util.Map;
 
+import static com.conveyal.datatools.manager.jobs.validation.SharedStopsHeader.STOP_GROUP_ID_INDEX;
+import static com.conveyal.datatools.manager.jobs.validation.SharedStopsHeader.STOP_ID_INDEX;
 
 public class SharedStopsValidator extends FeedValidator {
     private static final Logger LOG = LoggerFactory.getLogger(SharedStopsValidator.class);
@@ -42,13 +44,53 @@ public SharedStopsValidator buildSharedStopsValidator(Feed feed, SQLErrorStorage
         }
         return new SharedStopsValidator(feed, errorStorage, this.project, this.feedId);
     }
+
     public SharedStopsValidator(Feed feed, SQLErrorStorage errorStorage, Project project, String feedId) {
         super(feed, errorStorage);
         this.feed = feed;
         this.project = project;
         this.feedId = feedId;
     }
 
+    public static String[] getHeaders(CsvReader configReader) throws IOException {
+        configReader.setHeaders(configReader.getRawRecord().split(","));
+        return configReader.getHeaders();
+    }
+
+    public static Map<SharedStopsHeader, Integer> getHeaderIndices(CsvReader configReader) {
+        Map<SharedStopsHeader, Integer> headerIndices = new EnumMap<>(SharedStopsHeader.class);
+
+        try {
+            configReader.readRecord();
+            String[] headers = getHeaders(configReader);
+
+            for (int i = 0; i < headers.length; i++) {
+                String header = headers[i];
+                switch (SharedStopsHeader.fromValue(header)) {
+                    case STOP_GROUP_ID_INDEX:
+                        headerIndices.put(STOP_GROUP_ID_INDEX, i);
+                        break;
+                    case FEED_ID_INDEX:
+                        headerIndices.put(SharedStopsHeader.FEED_ID_INDEX, i);
+                        break;
+                    case STOP_ID_INDEX:
+                        headerIndices.put(STOP_ID_INDEX, i);
+                        break;
+                    case IS_PRIMARY_INDEX:
+                        headerIndices.put(SharedStopsHeader.IS_PRIMARY_INDEX, i);
+                        break;
+                }
+            }
+
+            if (!SharedStopsHeader.hasRequiredHeaders(headerIndices)) {
+                throw new RuntimeException("shared_stops.csv is missing headers!");
+            }
+        } catch (IOException e) {
+            throw new RuntimeException("shared_stops.csv was invalid!", e);
+        }
+        return headerIndices;
+    }
+
     @Override
     public void validate() {
         String config = project.sharedStopsConfig;
@@ -58,12 +100,6 @@ public void validate() {
 
         CsvReader configReader = CsvReader.parse(config);
 
-        // TODO: pull indicies from the CSV header
-        final int STOP_GROUP_ID_INDEX = 0;
-        final int STOP_ID_INDEX = 2;
-        final int IS_PRIMARY_INDEX = 3;
-        final int FEED_ID_INDEX = 1;
-
         // Build list of stop Ids.
         List<String> stopIds = new ArrayList<>();
         List<Stop> stops = new ArrayList<>();
@@ -73,54 +109,59 @@ public void validate() {
             stopIds.add(stop.stop_id);
         }
 
-        // Initialize hashmaps to hold duplication info
-        HashMap<String, Set<String>> stopGroupStops = new HashMap<>();
+        // Initialize hashmaps to hold duplication info.
+        HashSet<String> seenStopIds = new HashSet<>();
         HashSet<String> stopGroupsWithPrimaryStops = new HashSet<>();
 
         try {
+            Map<SharedStopsHeader, Integer> headerIndices = getHeaderIndices(configReader);
             while (configReader.readRecord()) {
-                String stopGroupId = configReader.get(STOP_GROUP_ID_INDEX);
-                String stopId = configReader.get(STOP_ID_INDEX);
-                String sharedStopFeedId = configReader.get(FEED_ID_INDEX);
+                String stopGroupId = configReader.get(headerIndices.get(STOP_GROUP_ID_INDEX));
+                String stopId = configReader.get(headerIndices.get(STOP_ID_INDEX));
+                String sharedStopFeedId = configReader.get(headerIndices.get(SharedStopsHeader.FEED_ID_INDEX));
 
-                if (stopId.equals("stop_id")) {
-                    // Swallow header row
+                if (stopId.equals(STOP_ID_INDEX.headerName)) {
+                    // Swallow header row.
                     continue;
                 }
 
-                stopGroupStops.putIfAbsent(stopGroupId, new HashSet<>());
-                Set<String> seenStopIds = stopGroupStops.get(stopGroupId);
-
-                // Check for SS_01 (stop id appearing in multiple stop groups)
+                // Check for SS_01 (stop id appearing in multiple stop groups).
+                // Make sure this error is only returned if we are inside the feed that is being checked.
                 if (seenStopIds.contains(stopId)) {
-                    registerError(stops
+                    if (feedId.equals(sharedStopFeedId)) {
+                        registerError(stops
                             .stream()
                             .filter(stop -> stop.stop_id.equals(stopId))
                             .findFirst()
-                            .orElse(stops.get(0)), NewGTFSErrorType.MULTIPLE_SHARED_STOPS_GROUPS
-                    );
+                            .orElse(new Stop()), NewGTFSErrorType.MULTIPLE_SHARED_STOPS_GROUPS
+                        );
+                    }
                 } else {
                     seenStopIds.add(stopId);
                 }
 
-                // Check for SS_02 (multiple primary stops per stop group)
-                if (stopGroupsWithPrimaryStops.contains(stopGroupId)) {
-                    registerError(NewGTFSError.forFeed(NewGTFSErrorType.SHARED_STOP_GROUP_MUTLIPLE_PRIMARY_STOPS, stopGroupId));
-                } else if (configReader.get(IS_PRIMARY_INDEX).equals("true")) {
-                    stopGroupsWithPrimaryStops.add(stopGroupId);
+                // Check for SS_02 (multiple primary stops per stop group).
+                if (
+                    configReader.get(headerIndices.get(SharedStopsHeader.IS_PRIMARY_INDEX)).equals("1") ||
+                    configReader.get(headerIndices.get(SharedStopsHeader.IS_PRIMARY_INDEX)).equals("true")
+                ) {
+                    if (stopGroupsWithPrimaryStops.contains(stopGroupId)) {
+                        registerError(NewGTFSError.forFeed(NewGTFSErrorType.SHARED_STOP_GROUP_MULTIPLE_PRIMARY_STOPS, stopGroupId));
+                    } else {
+                        stopGroupsWithPrimaryStops.add(stopGroupId);
+                    }
                 }
 
-                // Check for SS_03 (stop_id referenced doesn't exist)
-                // Make sure this error is only returned if we are inside the feed that is being checked
+                // Check for SS_03 (stop_id referenced doesn't exist).
+                // Make sure this error is only returned if we are inside the feed that is being checked.
                 if (feedId.equals(sharedStopFeedId) && !stopIds.contains(stopId)) {
                     registerError(NewGTFSError.forFeed(NewGTFSErrorType.SHARED_STOP_GROUP_ENTITY_DOES_NOT_EXIST, stopId));
                 }
             }
-        } catch (IOException e) { LOG.error(e.toString()); }
-        finally {
+        } catch (IOException e) {
+            LOG.error("Unable to validate shared stops.", e);
+        } finally {
             configReader.close();
         }
-
-
     }
 }

src/main/java/com/conveyal/datatools/manager/models/FeedVersion.java

@@ -517,7 +517,7 @@ public boolean hasBlockingIssuesForPublishing() {
             NewGTFSErrorType.TABLE_IN_SUBDIRECTORY,
             NewGTFSErrorType.WRONG_NUMBER_OF_FIELDS,
             NewGTFSErrorType.MULTIPLE_SHARED_STOPS_GROUPS,
-            NewGTFSErrorType.SHARED_STOP_GROUP_MUTLIPLE_PRIMARY_STOPS
+            NewGTFSErrorType.SHARED_STOP_GROUP_MULTIPLE_PRIMARY_STOPS
         ));
     }
 

src/test/java/com/conveyal/datatools/manager/jobs/validation/SharedStopsValidatorTest.java

@@ -0,0 +1,61 @@
+package com.conveyal.datatools.manager.jobs.validation;
+
+import com.conveyal.datatools.UnitTest;
+import com.csvreader.CsvReader;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.MethodSource;
+
+import java.util.stream.Stream;
+
+import static com.zenika.snapshotmatcher.SnapshotMatcher.matchesSnapshot;
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+class SharedStopsValidatorTest extends UnitTest {
+
+    @ParameterizedTest
+    @MethodSource("createCSVHeaders")
+    void canHandleVariousCorrectCSV(String headers) {
+        assertThat(SharedStopsValidator.getHeaderIndices(CsvReader.parse(headers)), matchesSnapshot());
+    }
+
+    private static Stream<String> createCSVHeaders() {
+        return Stream.of(
+            "is_primary,feed_id,stop_id,stop_group_id",
+            "feed_id,stop_id,stop_group_id,is_primary",
+            "feed_id,is_primary,stop_group_id,stop_id,feed_id"
+        );
+    }
+
+    @ParameterizedTest
+    @MethodSource("createInvalidCSVArguments")
+    void attemptToParseInvalidCSV(InvalidCSVArgument invalidCSVArgument) {
+        CsvReader configReader = CsvReader.parse(invalidCSVArgument.csv);
+        Exception exception = assertThrows(RuntimeException.class, () -> SharedStopsValidator.getHeaderIndices(configReader));
+        assertEquals(invalidCSVArgument.expectedError, exception.getMessage());
+    }
+
+    private static Stream<InvalidCSVArgument> createInvalidCSVArguments() {
+        String invalid = "Unknown shared stops header: ";
+        String missing = "shared_stops.csv is missing headers!";
+        return Stream.of(
+            new InvalidCSVArgument("this is a great string, but it's not a shared_stops csv!", invalid + "this is a great string"),
+            new InvalidCSVArgument("", invalid),
+            new InvalidCSVArgument("is_primary,stop_id", missing),
+            new InvalidCSVArgument("is_primary,feed_id,,stop_group_id", invalid),
+            new InvalidCSVArgument("is_primary,feed_id,stop_group_id", missing),
+            new InvalidCSVArgument("feed_id,   is_primary,    stop_group_id,stop_id", invalid + "   is_primary")
+        );
+    }
+
+    private static class InvalidCSVArgument {
+        public String csv;
+        public String expectedError;
+
+        public InvalidCSVArgument(String csv, String expectedError) {
+            this.csv = csv;
+            this.expectedError = expectedError;
+        }
+    }
+}

src/test/resources/snapshots/com/conveyal/datatools/manager/jobs/validation/SharedStopsValidatorTest/canHandleVariousCorrectCSV-0.json

@@ -0,0 +1,6 @@
+{
+  "STOP_GROUP_ID_INDEX" : 3,
+  "STOP_ID_INDEX" : 2,
+  "IS_PRIMARY_INDEX" : 0,
+  "FEED_ID_INDEX" : 1
+}

src/test/resources/snapshots/com/conveyal/datatools/manager/jobs/validation/SharedStopsValidatorTest/canHandleVariousCorrectCSV-1.json

@@ -0,0 +1,6 @@
+{
+  "STOP_GROUP_ID_INDEX" : 2,
+  "STOP_ID_INDEX" : 1,
+  "IS_PRIMARY_INDEX" : 3,
+  "FEED_ID_INDEX" : 0
+}

src/test/resources/snapshots/com/conveyal/datatools/manager/jobs/validation/SharedStopsValidatorTest/canHandleVariousCorrectCSV-2.json

@@ -0,0 +1,6 @@
+{
+  "STOP_GROUP_ID_INDEX" : 2,
+  "STOP_ID_INDEX" : 3,
+  "IS_PRIMARY_INDEX" : 1,
+  "FEED_ID_INDEX" : 4
+}