closes #105: delete collection command implementation

src/main/java/io/stargate/sgv2/jsonapi/StargateJsonApi.java

@@ -220,6 +220,17 @@
                                 }
                             }
                             """),
+              @ExampleObject(
+                  name = "deleteCollection",
+                  summary = "`DeleteCollection` command",
+                  value =
+                      """
+                            {
+                                "deleteCollection": {
+                                  "name": "events"
+                                }
+                            }
+                            """),
               @ExampleObject(
                   name = "resultCount",
                   summary = "countDocuments command result",

src/main/java/io/stargate/sgv2/jsonapi/api/model/command/Command.java

@@ -5,6 +5,7 @@
 import io.stargate.sgv2.jsonapi.api.model.command.impl.CountDocumentsCommands;
 import io.stargate.sgv2.jsonapi.api.model.command.impl.CreateCollectionCommand;
 import io.stargate.sgv2.jsonapi.api.model.command.impl.CreateNamespaceCommand;
+import io.stargate.sgv2.jsonapi.api.model.command.impl.DeleteCollectionCommand;
 import io.stargate.sgv2.jsonapi.api.model.command.impl.DeleteOneCommand;
 import io.stargate.sgv2.jsonapi.api.model.command.impl.FindCommand;
 import io.stargate.sgv2.jsonapi.api.model.command.impl.FindOneAndUpdateCommand;
@@ -38,6 +39,7 @@
   @JsonSubTypes.Type(value = CountDocumentsCommands.class),
   @JsonSubTypes.Type(value = CreateNamespaceCommand.class),
   @JsonSubTypes.Type(value = CreateCollectionCommand.class),
+  @JsonSubTypes.Type(value = DeleteCollectionCommand.class),
   @JsonSubTypes.Type(value = DeleteOneCommand.class),
   @JsonSubTypes.Type(value = FindCommand.class),
   @JsonSubTypes.Type(value = FindOneCommand.class),

src/main/java/io/stargate/sgv2/jsonapi/api/model/command/impl/CreateCollectionCommand.java

@@ -3,14 +3,14 @@
 import com.fasterxml.jackson.annotation.JsonTypeName;
 import io.stargate.sgv2.jsonapi.api.model.command.NamespaceCommand;
 import javax.annotation.Nullable;
-import javax.validation.constraints.NotNull;
+import javax.validation.constraints.NotBlank;
 import org.eclipse.microprofile.openapi.annotations.enums.SchemaType;
 import org.eclipse.microprofile.openapi.annotations.media.Schema;
 
 @Schema(description = "Command that creates a collection.")
 @JsonTypeName("createCollection")
 public record CreateCollectionCommand(
-    @NotNull
+    @NotBlank
         @Schema(
             description = "Name of the collection",
             implementation = Object.class,

src/main/java/io/stargate/sgv2/jsonapi/api/model/command/impl/DeleteCollectionCommand.java

@@ -0,0 +1,23 @@
+package io.stargate.sgv2.jsonapi.api.model.command.impl;
+
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import io.stargate.sgv2.jsonapi.api.model.command.NamespaceCommand;
+import javax.validation.constraints.NotBlank;
+import org.eclipse.microprofile.openapi.annotations.enums.SchemaType;
+import org.eclipse.microprofile.openapi.annotations.media.Schema;
+
+/**
+ * Command for deleting a collection.
+ *
+ * @param name Name of the collection
+ */
+@Schema(description = "Command that deletes a collection if one exists.")
+@JsonTypeName("deleteCollection")
+public record DeleteCollectionCommand(
+    @NotBlank
+        @Schema(
+            description = "Name of the collection",
+            implementation = Object.class,
+            type = SchemaType.OBJECT)
+        String name)
+    implements NamespaceCommand {}

src/main/java/io/stargate/sgv2/jsonapi/api/v1/NamespaceResource.java

@@ -56,6 +56,7 @@ public NamespaceResource(CommandProcessor commandProcessor) {
               schema = @Schema(anyOf = {CreateCollectionCommand.class}),
               examples = {
                 @ExampleObject(ref = "createCollection"),
+                @ExampleObject(ref = "deleteCollection"),
               }))
   @APIResponses(
       @APIResponse(

src/main/java/io/stargate/sgv2/jsonapi/service/operation/model/impl/CreateNamespaceOperation.java

@@ -18,7 +18,7 @@ public record CreateNamespaceOperation(String name, String replicationMap) imple
 
   // simple pattern for the cql
   private static final String CREATE_KEYSPACE_CQL =
-      "CREATE KEYSPACE IF NOT EXISTS \"%s\" WITH REPLICATION = %s;\n";
+      "CREATE KEYSPACE IF NOT EXISTS \"%s\" WITH REPLICATION = %s;";
 
   /** {@inheritDoc} */
   @Override

src/main/java/io/stargate/sgv2/jsonapi/service/operation/model/impl/DeleteCollectionOperation.java

@@ -0,0 +1,33 @@
+package io.stargate.sgv2.jsonapi.service.operation.model.impl;
+
+import io.smallrye.mutiny.Uni;
+import io.stargate.bridge.proto.QueryOuterClass;
+import io.stargate.sgv2.jsonapi.api.model.command.CommandContext;
+import io.stargate.sgv2.jsonapi.api.model.command.CommandResult;
+import io.stargate.sgv2.jsonapi.service.bridge.executor.QueryExecutor;
+import io.stargate.sgv2.jsonapi.service.operation.model.Operation;
+import java.util.function.Supplier;
+
+/**
+ * Implementation of the delete collection.
+ *
+ * @param context Command context, carries namespace of the collection.
+ * @param name Collection name.
+ */
+public record DeleteCollectionOperation(CommandContext context, String name) implements Operation {
+
+  private static final String DROP_TABLE_CQL = "DROP TABLE IF EXISTS %s.%s;";
+
+  @Override
+  public Uni<Supplier<CommandResult>> execute(QueryExecutor queryExecutor) {
+    String cql = DROP_TABLE_CQL.formatted(context.namespace(), name);
+    QueryOuterClass.Query query = QueryOuterClass.Query.newBuilder().setCql(cql).build();
+
+    // execute
+    return queryExecutor
+        .executeSchemaChange(query)
+
+        // if we have a result always respond positively
+        .map(any -> new SchemaChangeResult(true));
+  }
+}

src/main/java/io/stargate/sgv2/jsonapi/service/resolver/model/impl/DeleteCollectionResolver.java

@@ -0,0 +1,22 @@
+package io.stargate.sgv2.jsonapi.service.resolver.model.impl;
+
+import io.stargate.sgv2.jsonapi.api.model.command.CommandContext;
+import io.stargate.sgv2.jsonapi.api.model.command.impl.DeleteCollectionCommand;
+import io.stargate.sgv2.jsonapi.service.operation.model.Operation;
+import io.stargate.sgv2.jsonapi.service.operation.model.impl.DeleteCollectionOperation;
+import io.stargate.sgv2.jsonapi.service.resolver.model.CommandResolver;
+import javax.enterprise.context.ApplicationScoped;
+
+/** Resolver for the {@link DeleteCollectionCommand}. */
+@ApplicationScoped
+public class DeleteCollectionResolver implements CommandResolver<DeleteCollectionCommand> {
+  @Override
+  public Class<DeleteCollectionCommand> getCommandClass() {
+    return DeleteCollectionCommand.class;
+  }
+
+  @Override
+  public Operation resolveCommand(CommandContext ctx, DeleteCollectionCommand command) {
+    return new DeleteCollectionOperation(ctx, command.name());
+  }
+}

src/test/java/io/stargate/sgv2/jsonapi/api/model/command/impl/DeleteCollectionCommandTest.java

@@ -0,0 +1,66 @@
+package io.stargate.sgv2.jsonapi.api.model.command.impl;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import io.quarkus.test.junit.QuarkusTest;
+import io.quarkus.test.junit.TestProfile;
+import io.stargate.sgv2.common.testprofiles.NoGlobalResourcesTestProfile;
+import java.util.Set;
+import javax.inject.Inject;
+import javax.validation.ConstraintViolation;
+import javax.validation.Validator;
+import org.junit.jupiter.api.Nested;
+import org.junit.jupiter.api.Test;
+
+@QuarkusTest
+@TestProfile(NoGlobalResourcesTestProfile.Impl.class)
+class DeleteCollectionCommandTest {
+
+  @Inject ObjectMapper objectMapper;
+
+  @Inject Validator validator;
+
+  @Nested
+  class Validation {
+
+    @Test
+    public void noName() throws Exception {
+      String json =
+          """
+              {
+                "deleteCollection": {
+                }
+              }
+              """;
+
+      DeleteCollectionCommand command = objectMapper.readValue(json, DeleteCollectionCommand.class);
+      Set<ConstraintViolation<DeleteCollectionCommand>> result = validator.validate(command);
+
+      assertThat(result)
+          .isNotEmpty()
+          .extracting(ConstraintViolation::getMessage)
+          .contains("must not be blank");
+    }
+
+    @Test
+    public void nameBlank() throws Exception {
+      String json =
+          """
+              {
+                "deleteCollection": {
+                  "name": " "
+                }
+              }
+              """;
+
+      DeleteCollectionCommand command = objectMapper.readValue(json, DeleteCollectionCommand.class);
+      Set<ConstraintViolation<DeleteCollectionCommand>> result = validator.validate(command);
+
+      assertThat(result)
+          .isNotEmpty()
+          .extracting(ConstraintViolation::getMessage)
+          .contains("must not be blank");
+    }
+  }
+}

src/test/java/io/stargate/sgv2/jsonapi/api/v1/NamespaceResourceIntegrationTest.java

@@ -31,28 +31,128 @@ public static void enableLog() {
   }
 
   @Nested
-  class PostCommand {
+  class CreateCollection {
 
     @Test
     public void happyPath() {
       String json =
-          String.format(
-              """
-              {
-                "createCollection": {
-                  "name": "%s"
-                }
-              }
-              """,
-              "col" + RandomStringUtils.randomNumeric(16));
+          """
+          {
+            "createCollection": {
+              "name": "%s"
+            }
+          }
+          """
+              .formatted("col" + RandomStringUtils.randomNumeric(16));
+
+      given()
+          .header(HttpConstants.AUTHENTICATION_TOKEN_HEADER_NAME, getAuthToken())
+          .contentType(ContentType.JSON)
+          .body(json)
+          .when()
+          .post(NamespaceResource.BASE_PATH, keyspaceId.asInternal())
+          .then()
+          .statusCode(200)
+          .body("status.ok", is(1));
+    }
+  }
+
+  @Nested
+  class DeleteCollection {
+
+    @Test
+    public void happyPath() {
+      String collection = RandomStringUtils.randomAlphabetic(16);
+
+      // first create
+      String createJson =
+          """
+          {
+            "createCollection": {
+              "name": "%s"
+            }
+          }
+          """
+              .formatted(collection);
+
+      given()
+          .header(HttpConstants.AUTHENTICATION_TOKEN_HEADER_NAME, getAuthToken())
+          .contentType(ContentType.JSON)
+          .body(createJson)
+          .when()
+          .post(NamespaceResource.BASE_PATH, keyspaceId.asInternal())
+          .then()
+          .statusCode(200)
+          .body("status.ok", is(1));
+
+      // then delete
+      String json =
+          """
+          {
+            "deleteCollection": {
+              "name": "%s"
+            }
+          }
+          """
+              .formatted(collection);
+
       given()
           .header(HttpConstants.AUTHENTICATION_TOKEN_HEADER_NAME, getAuthToken())
           .contentType(ContentType.JSON)
           .body(json)
           .when()
           .post(NamespaceResource.BASE_PATH, keyspaceId.asInternal())
           .then()
-          .statusCode(200);
+          .statusCode(200)
+          .body("status.ok", is(1));
+    }
+
+    @Test
+    public void notExisting() {
+      String collection = RandomStringUtils.randomAlphabetic(16);
+
+      // delete not existing
+      String json =
+          """
+          {
+            "deleteCollection": {
+              "name": "%s"
+            }
+          }
+          """
+              .formatted(collection);
+
+      given()
+          .header(HttpConstants.AUTHENTICATION_TOKEN_HEADER_NAME, getAuthToken())
+          .contentType(ContentType.JSON)
+          .body(json)
+          .when()
+          .post(NamespaceResource.BASE_PATH, keyspaceId.asInternal())
+          .then()
+          .statusCode(200)
+          .body("status.ok", is(1));
+    }
+
+    @Test
+    public void invalidCommand() {
+      String json =
+          """
+          {
+            "deleteCollection": {
+            }
+          }
+          """;
+
+      given()
+          .header(HttpConstants.AUTHENTICATION_TOKEN_HEADER_NAME, getAuthToken())
+          .contentType(ContentType.JSON)
+          .body(json)
+          .when()
+          .post(NamespaceResource.BASE_PATH, keyspaceId.asInternal())
+          .then()
+          .statusCode(200)
+          .body("errors[0].message", is(not(blankString())))
+          .body("errors[0].exceptionClass", is("ConstraintViolationException"));
     }
   }
 
@@ -92,11 +192,11 @@ public void malformedBody() {
     public void unknownCommand() {
       String json =
           """
-                  {
-                    "unknownCommand": {
-                    }
-                  }
-                  """;
+          {
+            "unknownCommand": {
+            }
+          }
+          """;
 
       given()
           .header(HttpConstants.AUTHENTICATION_TOKEN_HEADER_NAME, getAuthToken())