package com.walker.support.milvus.engine;
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import com.walker.support.milvus.DataSet;
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import com.walker.support.milvus.FieldType;
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import com.walker.support.milvus.OperateService;
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import com.walker.support.milvus.OutData;
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import com.walker.support.milvus.Query;
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import com.walker.support.milvus.Table;
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import com.walker.support.milvus.util.FieldTypeUtils;
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import io.milvus.client.MilvusServiceClient;
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import io.milvus.grpc.MutationResult;
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import io.milvus.grpc.SearchResults;
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import io.milvus.param.ConnectParam;
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import io.milvus.param.IndexType;
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import io.milvus.param.MetricType;
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import io.milvus.param.R;
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import io.milvus.param.RpcStatus;
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import io.milvus.param.collection.CreateCollectionParam;
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import io.milvus.param.collection.DropCollectionParam;
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import io.milvus.param.collection.LoadCollectionParam;
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import io.milvus.param.collection.ReleaseCollectionParam;
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import io.milvus.param.dml.InsertParam;
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import io.milvus.param.dml.SearchParam;
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import io.milvus.param.index.CreateIndexParam;
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import io.milvus.param.index.DropIndexParam;
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import io.milvus.response.SearchResultsWrapper;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Map;
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public class DefaultOperateService implements OperateService {
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protected final transient Logger logger = LoggerFactory.getLogger(this.getClass());
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private MilvusServiceClient client = null;
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@Override
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public boolean connect(String ip, int port) {
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if(client != null){
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this.client.close();
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logger.warn("MilvusServiceClient在运行，正在停止，准备创建新对象: " + ip + ", " + port);
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}
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try {
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this.client = new MilvusServiceClient(ConnectParam.newBuilder()
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.withHost(ip)
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.withPort(port)
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.build());
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return true;
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} catch (Exception ex){
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logger.error("创建 MilvusServiceClient 错误：" + ip, ex);
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return false;
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}
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}
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@Override
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public void close() {
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if(this.client != null){
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this.client.close();
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}
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}
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@Override
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public boolean createTable(Table table) {
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this.checkConnection();
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if(table == null){
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logger.error("table 必须提供");
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return false;
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}
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List<FieldType> fieldList = table.getFieldTypes();
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if(fieldList == null || fieldList.size() == 0){
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logger.error("未找到任何字段信息");
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return false;
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}
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String tableName = table.getCollectionName();
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if(tableName == null || tableName.equals("")){
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logger.error("表名必须提供：tableName");
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return false;
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}
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try{
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List<io.milvus.param.collection.FieldType> milvusFieldList = new ArrayList<>();
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for(FieldType ft : fieldList){
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milvusFieldList.add(FieldTypeUtils.toMilvusFieldType(ft, table.getDimension()));
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}
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CreateCollectionParam.Builder builder = CreateCollectionParam.newBuilder();
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CreateCollectionParam param = builder.withCollectionName(tableName)
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.withDescription(table.getDescription())
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.withShardsNum(table.getShardsNum())
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.withFieldTypes(milvusFieldList)
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.build();
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R<RpcStatus> statusR = this.client.createCollection(param);
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return this.checkStatusR(statusR);
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} catch (Exception ex){
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logger.error("创建向量表失败：" + tableName, ex);
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return false;
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}
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}
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@Override
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public void dropTable(String tableName){
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this.checkConnection();
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if(tableName == null || tableName.equals("")){
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logger.error("表名必须提供：tableName");
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return;
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}
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this.client.dropCollection(DropCollectionParam.newBuilder()
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.withCollectionName(tableName)
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.build());
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}
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@Override
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public boolean insertDataSet(DataSet dataSet){
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this.checkConnection();
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if(dataSet == null){
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return false;
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}
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String tableName = dataSet.getTableName();
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if(tableName == null || tableName.equals("")){
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logger.error("表名必须提供：tableName");
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return false;
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}
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Map<String, List<?>> fields = dataSet.getFields();
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if(fields == null || fields.size() == 0){
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logger.error("数据集合必须提供：fields");
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return false;
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}
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List<InsertParam.Field> fieldList = new ArrayList<>();
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for(Map.Entry<String, List<?>> entry : fields.entrySet()){
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fieldList.add(new InsertParam.Field(entry.getKey(), entry.getValue()));
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}
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InsertParam.Builder builder = InsertParam.newBuilder();
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builder.withCollectionName(dataSet.getTableName());
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if(dataSet.getPartitionName() != null && !dataSet.getPartitionName().equals("")){
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builder.withPartitionName(dataSet.getPartitionName());
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}
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builder.withFields(fieldList);
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InsertParam insertParam = builder.build();
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R<MutationResult> statusR = this.client.insert(insertParam);
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if(statusR == null){
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return false;
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}
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if(statusR.getStatus().intValue() == R.Status.Success.getCode()){
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logger.error("insert 返回值：" + statusR.getStatus().intValue());
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return true;
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}
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return false;
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}
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@Override
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public boolean createIndex(String tableName, String fieldName, String indexType, String indexParam
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, com.walker.support.milvus.MetricType myMetricType){
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this.checkConnection();
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IndexType INDEX_TYPE = null;
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if(indexType.equals("IVF_FLAT")){
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INDEX_TYPE = IndexType.IVF_FLAT;
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} else if(indexType.equals("IVF_SQ8")){
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INDEX_TYPE = IndexType.IVF_SQ8;
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} else if(indexType.equals("IVF_PQ")){
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INDEX_TYPE = IndexType.IVF_PQ;
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} else if(indexType.equals("HNSW")){
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INDEX_TYPE = IndexType.HNSW;
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}
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else if(indexType.equals("ANNOY")){
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// INDEX_TYPE = IndexType.ANNOY;
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throw new UnsupportedOperationException("新版本已不支持：ANNOY");
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}
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else if(indexType.equals("FLAT")){
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INDEX_TYPE = IndexType.FLAT;
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} else if(indexType.equals("GPU_IVF_FLAT")){
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INDEX_TYPE = IndexType.GPU_IVF_FLAT;
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} else if(indexType.equals("GPU_IVF_PQ")){
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INDEX_TYPE = IndexType.GPU_IVF_PQ;
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} else if(indexType.equals("SCANN")){
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INDEX_TYPE = IndexType.SCANN;
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} else {
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throw new IllegalArgumentException("暂不支持其他索引类型：" + indexType);
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}
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/**
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* **欧氏距离 (L2)**: 主要运用于计算机视觉领域。
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* **内积 (IP)**: 主要运用于自然语言处理（NLP）领域。
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* @date 2024-03-26
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*/
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CreateIndexParam.Builder builder = CreateIndexParam.newBuilder();
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builder.withCollectionName(tableName)
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.withFieldName(fieldName)
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.withIndexName(fieldName + "_index")
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.withIndexType(INDEX_TYPE)
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// .withMetricType(MetricType.L2)
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.withExtraParam(indexParam)
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.withSyncMode(false);
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if(myMetricType == com.walker.support.milvus.MetricType.NLP){
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builder.withMetricType(MetricType.IP);
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} else if(myMetricType == com.walker.support.milvus.MetricType.IMAGE){
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builder.withMetricType(MetricType.L2);
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} else {
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throw new UnsupportedOperationException("暂时不支持距离类型：" + myMetricType);
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}
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R<RpcStatus> statusR = this.client.createIndex(builder.build());
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return checkStatusR(statusR);
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}
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@Override
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public boolean dropIndex(String tableName, String fieldName){
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this.checkConnection();
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R<RpcStatus> statusR = this.client.dropIndex(DropIndexParam.newBuilder()
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.withCollectionName(tableName)
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.withIndexName(fieldName + "_index")
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.build());
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return checkStatusR(statusR);
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}
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@Override
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public boolean prepareSearch(String tableName){
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this.checkConnection();
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R<RpcStatus> statusR = this.client.loadCollection(LoadCollectionParam.newBuilder().withCollectionName(tableName).build());
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// if(statusR == null){
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// return false;
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// }
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// if(statusR.getStatus().intValue() == R.Status.Success.getCode()){
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// return true;
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// }
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// return false;
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return checkStatusR(statusR);
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}
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@Override
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public OutData searchVector(Query query){
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this.checkConnection();
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List<List<Float>> search_vectors = query.getSearchVectors();
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if(search_vectors == null){
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logger.error("未设置搜索向量条件：search_vectors");
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return null;
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}
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String vectorField = query.getVectorName();
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if(vectorField == null || vectorField.equals("")){
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logger.error("未设置搜索字段名称：vectorField");
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return null;
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}
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List<String> outputFieldList = query.getOutFieldList();
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if(outputFieldList == null || outputFieldList.size() == 0){
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logger.error("未设置输出字段名称：OutFieldList");
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return null;
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}
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MetricType metricType = null;
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if(query.getMetricType() == null || query.getMetricType().equals("")){
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metricType = MetricType.L2;
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}
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SearchParam searchParam = SearchParam.newBuilder()
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.withCollectionName(query.getTableName())
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.withMetricType(metricType)
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.withOutFields(outputFieldList)
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.withTopK(query.getTopK())
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.withVectors(query.getSearchVectors())
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.withVectorFieldName(query.getVectorName())
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.withParams(query.getSearchParam())
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.build();
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R<SearchResults> respSearch = this.client.search(searchParam);
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if(respSearch == null){
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logger.warn("未搜索到相似结果对象：" + query);
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return null;
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}
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SearchResultsWrapper wrapperSearch = new SearchResultsWrapper(respSearch.getData().getResults());
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System.out.println(wrapperSearch.getIDScore(0));
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// 设置一个分值，评分过低的结果直接过滤。2022-08-26
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OutData outData = new OutData();
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List<SearchResultsWrapper.IDScore> scoreList = wrapperSearch.getIDScore(0);
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if(scoreList != null && scoreList.size() > 0){
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for(SearchResultsWrapper.IDScore idScore : scoreList){
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outData.addIdScore(idScore.getLongID(), idScore.getScore());
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}
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}
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for(String outField : outputFieldList){
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if(outField.equals("id")){
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outData.setKeyList((List<Long>)wrapperSearch.getFieldData("id", 0));
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} else {
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outData.setBusinessIdList((List<Long>)wrapperSearch.getFieldData(outField, 0));
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}
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}
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// System.out.println(wrapperSearch.getFieldData("book_id", 0));
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// return wrapperSearch.getFieldData(query.getFieldPrimaryKey(), 0);
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return outData;
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}
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@Override
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public void releaseSearch(String tableName){
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this.checkConnection();
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this.client.releaseCollection(ReleaseCollectionParam.newBuilder()
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.withCollectionName(tableName)
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.build());
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}
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private void checkConnection(){
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if(this.client == null){
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throw new RuntimeException("服务未连接，请先连接 milvus 服务");
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}
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}
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private boolean checkStatusR(R<RpcStatus> statusR){
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if(statusR == null){
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return false;
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}
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if(statusR.getStatus().intValue() == R.Status.Success.getCode()){
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return true;
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}
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return false;
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}
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}
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