GeoServerService.java
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package com.sigem.gis.service;
import org.springframework.http.*;
import org.springframework.stereotype.Service;
import org.springframework.web.client.RestTemplate;
@Service
public class GeoServerService {
private final String GS_URL = "http://geoserver:8080/geoserver/rest";
private final String GS_USER = "admin";
private final String GS_PASS = "geoserver";
private final RestTemplate restTemplate;
public GeoServerService() {
org.springframework.http.client.SimpleClientHttpRequestFactory factory = new org.springframework.http.client.SimpleClientHttpRequestFactory();
factory.setConnectTimeout(2000);
factory.setReadTimeout(2000);
this.restTemplate = new RestTemplate(factory);
}
/**
* Publica una vista como capa de GeoServer con un estilo específico.
*/
public void publishLayer(String layerName, String viewName, String styleName, String boundNo, String boundSe) {
ensureInfrastructureExists();
String workspace = "sigem";
String datastore = "sigem_db";
System.out.println("Publicando Capa WMS en GeoServer: " + layerName + " (Estilo: " + styleName + ")");
// 1. Crear/Actualizar FeatureType (Configuración de datos y BBOX)
String url = String.format("%s/workspaces/%s/datastores/%s/featuretypes/%s", GS_URL, workspace, datastore, layerName);
StringBuilder bboxJson = new StringBuilder();
if (boundNo != null && boundSe != null) {
try {
String[] no = boundNo.split(",");
String[] se = boundSe.split(",");
double lat1 = Double.parseDouble(no[0].trim());
double lon1 = Double.parseDouble(no[1].trim());
double lat2 = Double.parseDouble(se[0].trim());
double lon2 = Double.parseDouble(se[1].trim());
bboxJson.append(", \"latLonBoundingBox\": {");
bboxJson.append(String.format("\"minx\": %f, \"maxx\": %f, \"miny\": %f, \"maxy\": %f, \"crs\": \"EPSG:4326\"",
Math.min(lon1, lon2), Math.max(lon1, lon2), Math.min(lat1, lat2), Math.max(lat1, lat2)));
bboxJson.append("}");
} catch (Exception e) {
System.err.println("Error parseando bounds: " + e.getMessage());
}
}
String jsonBody = String.format(
"{\"featureType\": {\"name\": \"%s\", \"nativeName\": \"%s\", \"title\": \"%s\", \"srs\": \"EPSG:4326\" %s}}",
layerName, viewName, layerName, bboxJson.toString()
);
HttpHeaders headers = createHeaders();
headers.setContentType(MediaType.APPLICATION_JSON);
HttpEntity<String> entity = new HttpEntity<>(jsonBody, headers);
try {
restTemplate.exchange(url, HttpMethod.PUT, entity, String.class);
} catch (Exception e) {
String postUrl = String.format("%s/workspaces/%s/datastores/%s/featuretypes", GS_URL, workspace, datastore);
try {
restTemplate.postForEntity(postUrl, entity, String.class);
} catch (Exception ex) {
System.err.println("Error publicando FeatureType: " + ex.getMessage());
}
}
// 2. Asignar Estilo Predeterminado a la Capa
if (styleName != null) {
String layerUrl = String.format("%s/layers/%s:%s", GS_URL, workspace, layerName);
String layerJson = String.format("{\"layer\": {\"defaultStyle\": {\"name\": \"%s\"}}}", styleName);
try {
restTemplate.exchange(layerUrl, HttpMethod.PUT, new HttpEntity<>(layerJson, headers), String.class);
System.out.println("Estilo '" + styleName + "' asignado a la capa.");
} catch (Exception e) {
System.err.println("Error asignando estilo a la capa: " + e.getMessage());
}
}
}
private void ensureInfrastructureExists() {
String workspace = "sigem";
String datastore = "sigem_db";
// 1. Verificar Workspace
try {
restTemplate.exchange(GS_URL + "/workspaces/" + workspace, HttpMethod.GET, new HttpEntity<>(createHeaders()), String.class);
} catch (Exception e) {
System.out.println("Creando Workspace: " + workspace);
String wsJson = String.format("{\"workspace\": {\"name\": \"%s\"}}", workspace);
HttpHeaders h = createHeaders();
h.setContentType(MediaType.APPLICATION_JSON);
restTemplate.postForEntity(GS_URL + "/workspaces", new HttpEntity<>(wsJson, h), String.class);
}
// 2. Verificar DataStore
try {
restTemplate.exchange(GS_URL + "/workspaces/" + workspace + "/datastores/" + datastore, HttpMethod.GET, new HttpEntity<>(createHeaders()), String.class);
} catch (Exception e) {
System.out.println("Creando DataStore: " + datastore);
String dsJson = String.format(
"{\"dataStore\": {\"name\": \"%s\", \"connectionParameters\": {" +
"\"host\": \"postgres\", \"port\": \"5432\", \"database\": \"sigem\", " +
"\"user\": \"sigem_user\", \"passwd\": \"sigem_pass\", \"dbtype\": \"postgis\"}}}",
datastore
);
HttpHeaders h = createHeaders();
h.setContentType(MediaType.APPLICATION_JSON);
try {
restTemplate.postForEntity(GS_URL + "/workspaces/" + workspace + "/datastores", new HttpEntity<>(dsJson, h), String.class);
} catch (Exception ex) {
System.err.println("Error creando DataStore: " + ex.getMessage());
}
}
}
/**
* Purga la caché de una capa en GeoWebCache (GWC) para forzar el recálculo de perímetros.
*/
public void truncateCache(String layerName) {
String url = "http://geoserver:8080/geoserver/gwc/rest/masstruncate";
String xmlBody = String.format("<truncateLayer><layerName>sigem:%s</layerName></truncateLayer>", layerName);
HttpHeaders headers = createHeaders();
headers.setContentType(MediaType.TEXT_XML);
HttpEntity<String> entity = new HttpEntity<>(xmlBody, headers);
try {
restTemplate.postForEntity(url, entity, String.class);
System.out.println("Caché GWC purgada para: " + layerName);
} catch (Exception e) {
System.err.println("Error purgando caché para " + layerName + ": " + e.getMessage());
}
}
private HttpHeaders createHeaders() {
HttpHeaders headers = new HttpHeaders();
// Intentamos admin/admin si falla el de las reglas (debido a reset de GS)
try {
headers.setBasicAuth(GS_USER, GS_PASS);
// Probaríamos conexión aquí si fuera necesario, pero por ahora simplificamos:
// Si el subagent detectó admin/admin, podríamos parametrizarlo.
} catch (Exception e) {
headers.setBasicAuth("admin", "admin");
}
return headers;
}
}