Elasticsearch 修改字段类型，索引映射关系，模板属性

Java Api实现：

@Slf4j
@Service
public class ESMappingService {

    @Resource
    protected RestHighLevelClient client;

    
    public String[] getIndices(String index){
        GetIndexRequest request = new GetIndexRequest(index);
        //允许不存在的索引
        IndicesOptions indicesOptions = IndicesOptions.fromOptions(true, true, true, false);
        request.indicesOptions(indicesOptions);
        GetIndexResponse response = null;
        String[] indices = new String[]{};
        try {
            response = client.indices().get(request, RequestOptions.DEFAULT);
        } catch (Exception e) {
            log.error(" ESMappingService getIndices Cause:{},Message:{}", e.getCause(),e.getMessage());
        }
        if (response != null) {
            indices = response.getIndices();
        }
        return indices;
    }

    
    public String[] getAllIndices(){
        GetIndexRequest request = new GetIndexRequest();
        GetIndexResponse response = null;
        String[] indices = new String[]{};
        try {
            response = client.indices().get(request, RequestOptions.DEFAULT);
        } catch (Exception e) {
            log.error(" ESMappingService getAllIndices Cause:{},Message:{}", e.getCause(),e.getMessage());
        }
        if (response != null) {
            indices = response.getIndices();
        }
        return indices;
    }

    
    public List getAllTemplates(){
        GetIndexTemplatesRequest templatesRequest = new GetIndexTemplatesRequest();
        GetIndexTemplatesResponse templatesResponse = null;
        List list = new ArrayList<>();
        try {
            templatesResponse = client.indices().getIndexTemplate(templatesRequest, RequestOptions.DEFAULT);
        } catch (Exception e) {
            log.error(" ESCheckMappingService getAllTemplates query error ", e);
        }
        if(templatesResponse == null){
            return list;
        }
        return templatesResponse.getIndexTemplates();
    }

    
    public boolean isTemplateExist(String template){
        List list = getAllTemplates();
        if(list.isEmpty()){
            return false;
        }
        List names = list.stream().map(IndexTemplatemetadata::name).collect(Collectors.toList());
        return names.contains(template);
    }

    
    public MappingmetaData getIndexMapping(String index){
        GetMappingsRequest getMappingsRequest = new GetMappingsRequest();
        //允许不存在的索引
        IndicesOptions indicesOptions = IndicesOptions.fromOptions(true, true, true, false);
        getMappingsRequest.indicesOptions(indicesOptions);
        getMappingsRequest.indices(index);
        GetMappingsResponse getMappingsResponse = null;
        try {
            getMappingsResponse = client.indices().getMapping(getMappingsRequest, RequestOptions.DEFAULT);
        } catch (Exception e) {
            log.error(" ESCheckMappingService getIndexMapping query error ", e);
        }
        if(getMappingsResponse == null){
            return null;
        }
        return getMappingsResponse.mappings().get(index);
    }

    
    public IndexTemplatemetaData getTemplateMapping(String template){
        GetIndexTemplatesRequest templatesRequest = new GetIndexTemplatesRequest(template);
        GetIndexTemplatesResponse templatesResponse = null;
        try {
            templatesResponse = client.indices().getIndexTemplate(templatesRequest, RequestOptions.DEFAULT);
        } catch (Exception e) {
            log.error(" ESCheckMappingService getTemplateMapping query error ", e);
        }
        if(templatesResponse == null){
            return null;
        }
        return templatesResponse.getIndexTemplates().get(0);
    }

    
    public boolean isIndexFieldExist(String field, String index){
        MappingmetaData data = getIndexMapping(index);
        if(null == data){
            return false;
        }
        Map properties = (Map) data.getSourceAsMap().get(ESIndexConstant.PROPERTIES);
        return properties.containsKey(field);
    }

    
    public boolean isTemplateFieldExist(String field, String template){
        IndexTemplatemetaData templatemetaData = getTemplateMapping(template);
        if(null == templatemetaData){
            return false;
        }
        Map properties = (Map) templatemetaData.mappings().getSourceAsMap().get(ESIndexConstant.PROPERTIES);
        return properties.containsKey(field);
    }

    
    public boolean putMapping(String index, Map map){
        PutMappingRequest putMappingRequest = new PutMappingRequest(index);
        putMappingRequest.source(map);
        AcknowledgedResponse acknowledgedResponse = null;
        try {
            acknowledgedResponse = client.indices().putMapping(putMappingRequest, RequestOptions.DEFAULT);
        } catch (Exception e) {
            log.error(" ESCheckMappingService putMapping update error ", e);
        }
        if(acknowledgedResponse == null){
            return false;
        }
        return acknowledgedResponse.isAcknowledged();
    }

    
    public boolean putTemplate(String template, Map map){
        PutIndexTemplateRequest templateRequest = new PutIndexTemplateRequest(template);
        templateRequest.source(map);
        AcknowledgedResponse acknowledgedResponse = null;
        try {
            acknowledgedResponse = client.indices().putTemplate(templateRequest, RequestOptions.DEFAULT);
        } catch (Exception e) {
            log.error(" ESCheckMappingService putTemplate update error ", e);
        }
        if(acknowledgedResponse == null){
            return false;
        }
        return acknowledgedResponse.isAcknowledged();
    }


    
    public Map addFieldToIndex(String field, String type, String format){
        Map map = new HashMap<>();
        Map properties = new HashMap<>();
        properties.put(field, getFieldMap(type, format));
        map.put(ESIndexConstant.PROPERTIES, properties);
        return map;
    }

    private Map getFieldMap(String type, String format){
        Map fieldMap = new HashMap<>();
        fieldMap.put("type", type);
        if(null != format){
            fieldMap.put("format", format);
        }
        return fieldMap;
    }

    
    public Map addFieldToIndex(String field, String type){
        return addFieldToIndex(field, type, null);
    }

    
    public Map addFieldToTemplate(String templateName, String field, String type, String format){
        //获取模板现有属性信息
        IndexTemplatemetaData templatemetaData = this.getTemplateMapping(templateName);
        //获取模板所有字段属性
        Map properties = (Map) templatemetaData.mappings().getSourceAsMap().get(ESIndexConstant.PROPERTIES);
        //增加字段属性
        properties.put(field, getFieldMap(type, format));
        //组装新的模板信息
        return getTemplateMap(properties, templatemetaData);
    }

    
    public Map addFieldToTemplate(String templateName, String field, String type){
        return addFieldToTemplate(templateName, field, type, null);
    }

    
    public Map addFieldToIndexBatch(List list){
        Map map = new HashMap<>();
        Map properties = new HashMap<>();
        list.forEach(e -> properties.put(e.getField(), getFieldMap(e.getType(), e.getField())));
        map.put(ESIndexConstant.PROPERTIES, properties);
        return map;
    }

    
    public Map addFieldToTemplateBatch(String templateName, List list){
        //获取模板现有属性信息
        IndexTemplatemetaData templatemetaData = this.getTemplateMapping(templateName);
        //获取模板所有字段属性
        Map properties = (Map) templatemetaData.mappings().getSourceAsMap().get(ESIndexConstant.PROPERTIES);
        //增加字段属性
        list.forEach(e -> properties.put(e.getField(), getFieldMap(e.getType(), e.getField())));
        //组装新的模板信息
        return getTemplateMap(properties, templatemetaData);
    }

    
    private Map getTemplateMap(Map properties, IndexTemplatemetaData templatemetaData){
        Map templateMap = new HashMap<>();
        Map pro = new HashMap<>();
        pro.put(ESIndexConstant.PROPERTIES, properties);
        templateMap.put(ESIndexConstant.MAPPINGS, pro);
        //指定模板范围为原有,必要操作
        templateMap.put(ESIndexConstant.INDEX_PATTERNS, templatemetaData.patterns());
        //原有设置属性信息
        Map settingsMap = templatemetaData.settings().getAsGroups();
        Map setMap = new HashMap<>();
        settingsMap.forEach((k,v) -> setMap.put(k, JSON.parseObject(v.toString())));
        templateMap.put(ESIndexConstant.SETTINGS, setMap);
        return templateMap;
    }

    
    public boolean deleteIndices(String... indices){
        DeleteIndexRequest request = new DeleteIndexRequest(indices);
        AcknowledgedResponse response = null;
        try {
            response = client.indices().delete(request, RequestOptions.DEFAULT);
        } catch (Exception e) {
            log.error(" ESMappingService deleteIndices error", e);
        }
        if(response == null){
            return false;
        }
        return response.isAcknowledged();
    }

    
    public boolean deleteTemplate(String template){
        DeleteIndexTemplateRequest request = new DeleteIndexTemplateRequest(template);
        AcknowledgedResponse response = null;
        try {
            response = client.indices().deleteTemplate(request, RequestOptions.DEFAULT);
        } catch (Exception e) {
            log.error(" ESMappingService deleteTemplate error", e);
        }
        if(response == null){
            return false;
        }
        return response.isAcknowledged();
    }
}