add fields xml generation

application/src/main/java/it/smartcommunitylabdhub/core/components/solr/SolrFieldsExportRunner.java

@@ -0,0 +1,76 @@
+package it.smartcommunitylabdhub.core.components.solr;
+
+import java.io.File;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import org.apache.commons.io.FileUtils;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.CommandLineRunner;
+import org.springframework.boot.SpringApplication;
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.annotation.Profile;
+import org.springframework.stereotype.Component;
+import org.thymeleaf.TemplateEngine;
+import org.thymeleaf.context.Context;
+
+import it.smartcommunitylabdhub.core.models.indexers.SolrEntityIndexer;
+import lombok.extern.slf4j.Slf4j;
+
+@Component
+@Slf4j
+@Profile("generate-solr")
+public class SolrFieldsExportRunner  implements CommandLineRunner {
+    @Autowired
+    ApplicationContext context;
+
+    @Autowired
+    private TemplateEngine templateEngine;
+
+    private List<SolrEntityIndexer<?>> services;
+
+    @Autowired(required = false)
+    public void setServices(List<SolrEntityIndexer<?>> services) {
+        this.services = services;
+    }
+
+    @Override
+	public void run(String... args) throws Exception {
+		log.info("Running solr fields export...");
+		int returnCode = 0;
+		if(services != null) {
+			try {
+				Map<String, IndexField> fieldsMap = new HashMap<>();
+				services.forEach(service -> {
+					for(IndexField field : service.fields()) {
+						if(!fieldsMap.containsKey(field.getName()))
+							fieldsMap.put(field.getName(), field);
+					}
+				});
+				Map<String, Object> variables = new HashMap<>();
+				variables.put("fields", fieldsMap.values());
+		        final Context ctx = new Context();
+		        ctx.setVariables(variables);
+		        String content = templateEngine.process("solr_fields.xml", ctx);
+		        String out = "solr/solr_fields.xml";
+		        Path fp = Paths.get(out);
+		        Files.createDirectories(fp.getParent());
+		        File file = new File(out);
+		        log.info("writing solr fields to {}...",file.getAbsolutePath());
+		        FileUtils.writeStringToFile(file, content, StandardCharsets.UTF_8);
+			} catch (Exception e) {
+				log.error("Error with export: {}", e.getMessage());
+				returnCode = 1;
+			}
+		}
+        int exitCode = returnCode == 0
+                ? SpringApplication.exit(context, () -> 0)
+                : SpringApplication.exit(context, () -> 1);
+        System.exit(exitCode);		
+	}
+}

application/src/main/java/it/smartcommunitylabdhub/core/models/indexers/BaseEntityIndexer.java

@@ -84,6 +84,7 @@ protected SolrInputDocument parse(D item, String type) {
     public List<IndexField> fields() {
         List<IndexField> fields = new LinkedList<>();
 
+        fields.add(new IndexField("id", "string", true, false, true, true));
         fields.add(new IndexField("keyGroup", "string", true, false, true, true));
         fields.add(new IndexField("type", "string", true, false, true, true));
 

application/src/main/resources/application.yml

@@ -211,8 +211,8 @@ solr:
   url: ${SOLR_URL:false}
   user: ${SOLR_USER:}
   password: ${SOLR_PASSWORD:}
-  admin-user: ${SOLR_ADMIN_USER:}
-  admin-password: ${SOLR_ADMIN_PASSWORD:}
+  admin-user: ${SOLR_ADMIN_USER:${SOLR_USER}}
+  admin-password: ${SOLR_ADMIN_PASSWORD:${SOLR_PASSWORD}}
   collection: ${SOLR_COLLECTION:dhcore}
   timeout: ${SOLR_TIMEOUT:5000}
   shards: ${SOLR_COLLECTION_SHARDS_NUM:1}

application/src/main/resources/templates/solr_fields.xml

@@ -0,0 +1,3 @@
+<root>
+	<field th:each="item : ${fields}" th:name="${item.name}" th:type="${item.type}" th:indexed="${item.indexed}" th:multiValued="${item.multiValued}" th:stored="${item.stored}" th:uninvertible="${item.uninvertible}"/>
+</root>