Solr Schema Java Api 字段定義等相關操做

import java.io.IOException;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;

import org.apache.commons.collections.CollectionUtils;
import org.apache.solr.client.solrj.SolrServerException;
import org.apache.solr.client.solrj.impl.CloudSolrClient;
import org.apache.solr.client.solrj.request.CollectionAdminRequest;
import org.apache.solr.client.solrj.request.CollectionAdminRequest.Delete;
import org.apache.solr.client.solrj.request.schema.SchemaRequest;
import org.apache.solr.client.solrj.response.CollectionAdminResponse;
import org.apache.solr.client.solrj.response.schema.SchemaResponse;
import org.apache.solr.common.cloud.ZkConfigManager;
import org.apache.solr.common.params.ModifiableSolrParams;
import org.apache.solr.common.util.NamedList;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import com.google.common.collect.Lists;

/**
 * 索引節點管理
 * 
 * @author lican
 * @date 2018-12-11
 */
@Component
public class CollectionManager {

    private static final Logger LOG = LoggerFactory.getLogger(CollectionManager.class);

    @Autowired
    private CloudSolrClient solrCloudClient;
    @Autowired
    private ZkConfigManager zkConfigManager;

    private final String configPath = this.getClass().getClassLoader().getResource("solrconfig").getPath();
    /**
     * 獲取schemaFields參數
     */
    private static ModifiableSolrParams schemaFieldSolrParams = new ModifiableSolrParams();
    private static ModifiableSolrParams schemaCopyFieldSolrParams = new ModifiableSolrParams();
    private static ModifiableSolrParams schemaUniqueKeySolrParams = new ModifiableSolrParams();
    static {
        // 是否顯示域類型的默認信息
        schemaFieldSolrParams.add("showDefaults", "false");
        // 是否返回動態域的定義信息
        schemaFieldSolrParams.add("includeDynamic", "true");
        // 指定返回那些域的定義信息
        schemaFieldSolrParams.add("f1", "name,_version_");

        schemaCopyFieldSolrParams.add("wt", "json");
        // 設置返回sourcefield信息
        schemaCopyFieldSolrParams.add("source.fl", "name");
        
        schemaUniqueKeySolrParams.add("wt", "json");
    }

    /**
     * 建立字段
     * 
     * @param param
     * @throws Exception
     */
    public boolean createFields(String collection, List<SchemaParam> schemaParams) {
        LOG.info("CollectionManager.createFields...collection:{},schema:{}", collection, schemaParams);
        try {
            List<SchemaParam> diffFields = getDiffFields(collection, schemaParams);
            if (CollectionUtils.isEmpty(diffFields)) {
                LOG.info("create fields fail,Fields is exist,collection:{},schemaParams:{}", collection, schemaParams);
                return false;
            }
            for (SchemaParam schemaParam : diffFields) {
                SchemaRequest.UniqueKey uniqueKey = new SchemaRequest.UniqueKey(schemaUniqueKeySolrParams);
                insertSchemaField(collection, schemaParam);
            }
            LOG.info("[createFields]create success");
            return true;
        } catch (Exception e) {
            LOG.error("[createFields] create fail,collection:{},schema:{}", collection, schemaParams, e);
            return false;
        }
    }

    /**
     * 寫入單個field到schema
     * 
     * @param collection
     * @param schemaParam
     * @throws Exception
     */
    private void insertSchemaField(String collection, SchemaParam schemaParam) throws Exception {
        String fieldName = schemaParam.getName();
        // 增長到字段到Collection
        Map<String, Object> fieldAttributes = new HashMap<>();
        fieldAttributes = new HashMap<>();
        fieldAttributes.put(SchemaParam.NAME, fieldName);
        fieldAttributes.put(SchemaParam.TYPE, schemaParam.getType());
        fieldAttributes.put(SchemaParam.INDEXED, schemaParam.getIndexed());
        fieldAttributes.put(SchemaParam.STORED, schemaParam.getStored());
        fieldAttributes.put(SchemaParam.REQUIRED, schemaParam.getRequired());
        fieldAttributes.put(SchemaParam.MULTIVALUED, schemaParam.getMultiValued());
        fieldAttributes.put(SchemaParam.OMIT_NORMS, schemaParam.getOmitNorms());
        SchemaRequest.AddField addField = new SchemaRequest.AddField(fieldAttributes);
        addField.process(solrCloudClient, collection);
        LOG.info("[insertField]field :{},insert success", fieldName);
    }

    /**
     * 對比獲取到schema中沒有的Field
     * 
     * @param collection
     * @param schemaParams
     * @return
     */
    private List<SchemaParam> getDiffFields(String collection, List<SchemaParam> schemaParams) throws Exception {
        List<SchemaParam> diffSchemas = Lists.newArrayList();
        List<String> schemaFields = getSchemaFields(collection);
        for (SchemaParam schemaParam : schemaParams) {
            String fieldName = schemaParam.getName();
            if (CollectionUtils.isNotEmpty(schemaFields) && !schemaFields.contains(fieldName)) {
                diffSchemas.add(schemaParam);
            }
        }
        return diffSchemas;
    }

    /**
     * 建立 copyField, 可用於數據union 主要參數source、dest,複製與只要將多個域組合成一個域
     * 
     * @param collection
     * @param columns
     */
    public void createCopyFields(String collection, List<SchemaParam> schemaParams) {
        LOG.info("create copy fields...collection:{},schema:{}", collection, schemaParams);
        List<String> destFields = getDiffCopyField(collection, schemaParams);
        SchemaRequest.AddCopyField addCopyField = new SchemaRequest.AddCopyField("union_field", destFields);
        try {
            SchemaResponse.UpdateResponse response = addCopyField.process(solrCloudClient, collection);
            NamedList<Object> result = response.getResponse();
            LOG.info("create copy fields results :{}", result);
        } catch (Exception e) {
            LOG.error("create copy fields fail,collection:{},schema:{}", collection, schemaParams, e);
        }
    }

    /**
     * 對比獲取到schema中沒有的copyField
     * 
     * @return
     */
    private List<String> getDiffCopyField(String collection, List<SchemaParam> schemaParams) {
        List<String> sorecesCopyFields = getSchemaCopyFields(collection);
        List<String> destFields = new ArrayList<>();
        for (SchemaParam schemaParam : schemaParams) {
            String fieldName = schemaParam.getName();
            if (!sorecesCopyFields.contains(fieldName)) {
                destFields.add(fieldName);
            }
        }
        return destFields;
    }

    /**
     * 查看全部copyFields
     * 
     * @param collection
     * @return
     */
    public List<String> getSchemaCopyFields(String collection) {
        List<String> sources = Lists.newArrayList();
        SchemaRequest.CopyFields allCopyFields = new SchemaRequest.CopyFields(schemaCopyFieldSolrParams);
        try {
            SchemaResponse.CopyFieldsResponse response = allCopyFields.process(solrCloudClient, collection);
            NamedList<Object> result = response.getResponse();
            List<NamedList<Object>> copyFields = (List<NamedList<Object>>) result.get("copyFields");
            for (NamedList<Object> copyField : copyFields) {
                for (Entry<String, Object> entry : copyField) {
                    String key = entry.getKey();
                    Object val = entry.getValue();
                    if (key.equals("source")) {
                        sources.add(val.toString());
                    }
                }
            }
        } catch (Exception e) {
            LOG.error("Get Schema CopyFields fail,collection:{} ", collection, e);
            return sources;
        }
        return sources;
    }

    /**
     * 按字段名刪除字段
     * 
     * @param connection
     * @param fieldName
     */
    public void deleteField(String collection, String fieldName) {
        SchemaRequest.DeleteField deleteField = new SchemaRequest.DeleteField(fieldName);
        try {
            SchemaResponse.UpdateResponse response = deleteField.process(solrCloudClient, collection);
            if (null != response) {
                LOG.info("[deleteFields]delete success,collection:{},field:{},requestUrl:{}", collection, fieldName,
                        response.getRequestUrl());
            }
        } catch (Exception e) {
            LOG.error("[deleteFields]delete fail,collection:{},field:{}", collection, fieldName, e);
        }
    }

    /**
     * 覆蓋字段
     * 
     * @param collection
     */
    public void updateField(String collection, List<SchemaParam> schemaParams) {
        Map<String, Object> fieldAttributes = new HashMap<>();
        fieldAttributes.put("name", "product_name");
        fieldAttributes.put("type", "date");
        fieldAttributes.put("stored", "true");
        fieldAttributes.put("omitNorms", true);
        SchemaRequest.ReplaceField replaceField = new SchemaRequest.ReplaceField(fieldAttributes);
        try {
            replaceField.process(solrCloudClient, collection);
        } catch (Exception e) {
            LOG.error("[updateFields]update fail,collection:{},schemaParams:{}", collection, schemaParams, e);
        }
    }

    /**
     * 上傳默認配置到zk 只有新增索引時調用
     * 
     * @param collection
     * @return
     */
    public boolean uploadDefaultConfig(String collection) {
        LOG.info("[ready]upload default config ----ready----,collection:{}", collection);
        try {
            zkConfigManager.uploadConfigDir(Paths.get(configPath), collection);
            LOG.info("[success]upload default config ----success----,collection:{}", collection);
            return true;
        } catch (IOException e) {
            LOG.error("[fail]upload default config ----fail----,collection:{}", collection, e);
            return false;
        }
    }

    /**
     * 建立索引節點
     * 
     * @param collection
     * @return
     */
    public boolean createCollection(String collection) {
        LOG.info("[ready]create collection ----ready----,collection:{}", collection);
        CollectionAdminRequest.Create create = CollectionAdminRequest.createCollection(collection, 1, 1);
        try {
            CollectionAdminResponse resp = create.process(solrCloudClient);
            if (null == resp) {
                LOG.error("[fail]create collection ----fail----,create response is null,collection:{}", collection);
                return false;
            }
            if (!resp.isSuccess()) {
                LOG.error("[fail]create collection ----fail----,error message:{},collection:{}",
                        resp.getErrorMessages(), collection);
                return false;
            }
            LOG.info("[success]create collection ----success----,collection:{}", collection);
            return true;
        } catch (SolrServerException | IOException e) {
            LOG.error("[fail]create collection ----fail----,collection:{}", collection, e);
            return false;
        }
    }

    /**
     * 刷新節點配置信息（新增字段須要刷新後建索引）
     * 
     * @param collection
     * @return
     */
    public boolean reloadCollection(String collection) {
        LOG.info("[ready]reload collection ----ready----,collection:{}", collection);
        CollectionAdminRequest.Reload reload = CollectionAdminRequest.reloadCollection(collection);
        try {
            CollectionAdminResponse resp = reload.process(solrCloudClient);
            if (null == resp) {
                LOG.error("[fail]reload collection ----fail----,reload response is null,collection:{}", collection);
                return false;
            }
            if (!resp.isSuccess()) {
                LOG.error("[fail]reload collection ----fail----,error message:{},collection:{}",
                        resp.getErrorMessages(), collection);
                return false;
            }
            LOG.info("[success]reload collection ----success----,collection:{}", collection);
            return true;
        } catch (SolrServerException | IOException e) {
            LOG.error("[fail]reload collection ----fail----,collection:{}", collection, e);
            return false;
        }
    }

    /**
     * 刪除索引節點
     * 
     * @param collection
     * @throws Exception
     */
    public void deleteCollection(String collection) throws Exception {
        LOG.info("deleteCollection:{},------ready------", collection);
        if (isExist(collection)) {
            Delete delete = CollectionAdminRequest.deleteCollection(collection);
            delete.process(solrCloudClient);
            LOG.info("deleteCollection:{},------success------", collection);
        } else {
            LOG.info("deleteCollection:{},------fail------,找不到要刪除的collection", collection);
        }
    }

    /**
     * 索引是否存在
     * 
     * @param collection
     * @return
     * @throws Exception
     */
    public boolean isExist(String collection) throws Exception {
        boolean isConnection = solrCloudClient.getZkStateReader().getClusterState().hasCollection(collection);
        if (isConnection) {
            LOG.info("CollectionManager.collection:{},is exist", collection);
        } else {
            LOG.info("CollectionManager.collection:{},not exist", collection);
        }
        return isConnection;
    }

    /**      * 查看schema 全部field      *       * @param collection      * @return      * @throws Exception      */     public List<String> getSchemaFields(String collection) throws Exception {         List<String> allField = Lists.newArrayList();         SchemaRequest.Fields allFields = new SchemaRequest.Fields(schemaFieldSolrParams);         SchemaResponse.FieldsResponse response;         try {             response = allFields.process(solrCloudClient, collection);             NamedList<Object> result = response.getResponse();             @SuppressWarnings("unchecked")             List<NamedList<Object>> fields = (List<NamedList<Object>>) result.get("fields");             for (NamedList<Object> field : fields) {                 for (Entry<String, Object> entry : field) {                     String key = entry.getKey();                     Object val = entry.getValue();                     if ("name".equals(key)) {                         if (null == val) {                             allField.add("");                         } else {                             allField.add(val.toString());                         }                     }                 }             }         } catch (SolrServerException | IOException e) {             LOG.error("Get Schema Fields fail,colleciotn:{}", collection, e);         }         return allField;     } }