io.stargate.graphql.schema.fetchers.dml.InsertMutationFetcher Maven / Gradle / Ivy

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/*
 * Copyright The Stargate Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.stargate.graphql.schema.fetchers.dml;

import com.google.common.base.Preconditions;
import graphql.schema.DataFetchingEnvironment;
import io.stargate.auth.AuthenticationService;
import io.stargate.auth.AuthenticationSubject;
import io.stargate.auth.AuthorizationService;
import io.stargate.auth.Scope;
import io.stargate.auth.SourceAPI;
import io.stargate.auth.TypedKeyValue;
import io.stargate.auth.UnauthorizedException;
import io.stargate.db.datastore.DataStore;
import io.stargate.db.datastore.DataStoreFactory;
import io.stargate.db.query.BoundDMLQuery;
import io.stargate.db.query.BoundQuery;
import io.stargate.db.query.builder.ValueModifier;
import io.stargate.db.schema.Column;
import io.stargate.db.schema.Table;
import io.stargate.graphql.schema.NameMapping;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

public class InsertMutationFetcher extends MutationFetcher {

  public InsertMutationFetcher(
      Table table,
      NameMapping nameMapping,
      AuthenticationService authenticationService,
      AuthorizationService authorizationService,
      DataStoreFactory dataStoreFactory) {
    super(table, nameMapping, authenticationService, authorizationService, dataStoreFactory);
  }

  @Override
  protected BoundQuery buildQuery(
      DataFetchingEnvironment environment,
      DataStore dataStore,
      AuthenticationSubject authenticationSubject)
      throws UnauthorizedException {
    boolean ifNotExists =
        environment.containsArgument("ifNotExists")
            && environment.getArgument("ifNotExists") != null
            && (Boolean) environment.getArgument("ifNotExists");

    BoundQuery query =
        dataStore
            .queryBuilder()
            .insertInto(table.keyspace(), table.name())
            .value(buildInsertValues(environment))
            .ifNotExists(ifNotExists)
            .ttl(getTTL(environment))
            .build()
            .bind();

    authorizationService.authorizeDataWrite(
        authenticationSubject,
        table.keyspace(),
        table.name(),
        TypedKeyValue.forDML((BoundDMLQuery) query),
        Scope.MODIFY,
        SourceAPI.GRAPHQL);

    return query;
  }

  private List buildInsertValues(DataFetchingEnvironment environment) {
    Map value = environment.getArgument("value");
    Preconditions.checkNotNull(value, "Insert statement must contain at least one field");

    List modifiers = new ArrayList<>();
    for (Map.Entry entry : value.entrySet()) {
      Column column = getColumn(table, entry.getKey());
      modifiers.add(ValueModifier.set(column.name(), toDBValue(column, entry.getValue())));
    }
    return modifiers;
  }
}