/**
* Creates resource URL.
*
* @param wmsEntity
* @param wmsCapabilities
* @param layers
* @param centerB
* @param centerL
* @param zoomInt
* @param width
* @param length
* @param format
* @return String with URL.
* @throws WmsException
*/
public String getUrl(
boolean encode,
WmsEntity wmsEntity,
WmsCapabilities wmsCapabilities,
String layers,
double centerB,
double centerL,
int zoomInt,
int width,
int length,
String format)
throws WmsException {
try {
Assert.notNull(wmsEntity, "wmsEntity is null");
GeoConversion geoConversion = GeoconversionFactory.create(wmsEntity.getSrs());
Assert.notNull(geoConversion, "geoConversion is null");
Assert.notNull(centerB, "centerB is null");
Assert.notNull(centerL, "centerL is null");
Assert.notNull(zoomInt, "zoomInt is null");
Assert.notNull(zoomInt, "width is null");
Assert.notNull(length, "length is null");
geoConversion.setUrlGivenParams(centerB, centerL, zoomInt, width, length);
Assert.notNull(wmsCapabilities, "wmsCapabilities is null");
Assert.notNull(wmsCapabilities.getCapability(), "wmsCapabilities.getCapability() is null");
Assert.notNull(
wmsCapabilities.getCapability().getRequest(),
"wmsCapabilities.getCapability().getRequest() is null");
Assert.notNull(
wmsCapabilities.getCapability().getRequest().getGetMap(),
"wmsCapabilities.getCapability().getRequest().getGetMap() is null");
Assert.notNull(
wmsCapabilities.getCapability().getRequest().getGetMap().getDcpType(),
"wmsCapabilities.getCapability().getRequest().getGetMap().getDcpType() is null");
Assert.notNull(
wmsCapabilities.getCapability().getRequest().getGetMap().getDcpType().getHttp(),
"wmsCapabilities.getCapability().getRequest().getGetMap().getDcpType().getHttp() is null");
Assert.notNull(
wmsCapabilities.getCapability().getRequest().getGetMap().getDcpType().getHttp().getGet(),
"wmsCapabilities.getCapability().getRequest().getGetMap().getDcpType().getHttp().getGet() is null");
Assert.notNull(
wmsCapabilities
.getCapability()
.getRequest()
.getGetMap()
.getDcpType()
.getHttp()
.getGet()
.getOnlineResource(),
"wmsCapabilities.getCapability().getRequest().getGetMap().getDcpType().getHttp().getGet().getOnlineResource() is null");
Assert.notNull(
wmsCapabilities
.getCapability()
.getRequest()
.getGetMap()
.getDcpType()
.getHttp()
.getGet()
.getOnlineResource()
.getHref(),
"wmsCapabilities.getCapability().getRequest().getGetMap().getDcpType().getHttp().getGet().getOnlineResource().getHref() is null");
Assert.notNull(wmsCapabilities.getService(), "wmsCapabilities.getService() is null");
String url;
try {
if (encode) layers = URLEncoder.encode(layers, "UTF-8");
url =
wmsCapabilities
.getCapability()
.getRequest()
.getGetMap()
.getDcpType()
.getHttp()
.getGet()
.getOnlineResource()
.getHref()
+ "?REQUEST=GetMap"
+ "&SERVICE="
+ wmsCapabilities.getService().getName()
+ "&VERSION="
+ wmsCapabilities.getVersion()
+ "&LAYERS="
+ layers
+ "&STYLES=&FORMAT=image/"
+ format
+ "&BGCOLOR=0xFFFFFF&TRANSPARENT=TRUE"
+ "&"
+ geoConversion.getSrsPart()
+ "&"
+ geoConversion.getConvertedBboxUrlPart()
+ "&"
+ geoConversion.getConvertedWidth()
+ "&"
+ geoConversion.getConvertedHeight();
} catch (UnsupportedEncodingException e) {
LOGGER.error("Unsupported Encoding", e);
throw new WmsException(e.getMessage());
}
LOGGER.info("TRANSLATED URL=" + url);
return url.replace("??", "?");
} catch (IllegalArgumentException e) {
LOGGER.error(e);
if (LOGGER.isDebugEnabled()) LOGGER.debug("WMS: IllegalArgumentException", e);
throw new WmsException(e.getMessage());
}
}
/**
* Forwards requests to resource.
*
* @param name
* @param response
* @param request
* @param layers
* @param center
* @param zoom
* @param size
* @param format
* @throws WmsException
*/
@RequestMapping(
value = "/{name}/redirect",
method = RequestMethod.GET,
produces = "application/json; charset=utf-8")
public void forwardWmsMap(
@PathVariable String name,
HttpServletResponse response,
HttpServletRequest request,
@RequestParam String layers,
@RequestParam(required = false) String center,
@RequestParam(required = false) String zoom,
@RequestParam(required = false) String size,
@RequestParam(required = false) String format)
throws WmsException {
if (LOGGER.isDebugEnabled())
LOGGER.debug(
"Received params: \nlayers="
+ layers
+ "\ncenter="
+ center
+ "\nzoom="
+ zoom
+ "\nsize="
+ size
+ "\nformat="
+ format);
WmsEntity wmsEntity = wmsRepository.findByName(name);
if (wmsEntity == null) {
// no WMS entity for given ID
throw new HttpClientErrorException(
HttpStatus.BAD_REQUEST, "No WMS entity for name given in URL; name=" + name);
}
WmsCapabilities capabilities = wmsService.getCapabilities(wmsEntity.getUrl());
if (capabilities == null) {
// no WMS entity for given ID
throw new HttpClientErrorException(
HttpStatus.FAILED_DEPENDENCY, "Incorrect answer from WMS resource");
}
LayerWrap availableLayers = capabilities.getCapability().getLayerWrap();
try {
center =
center != null
? center
: configService.getStringValueForConfigVariable("wms.params.center");
zoom = zoom != null ? zoom : configService.getStringValueForConfigVariable("wms.params.zoom");
size = size != null ? size : configService.getStringValueForConfigVariable("wms.params.size");
format =
format != null
? format
: configService.getStringValueForConfigVariable("wms.params.format");
validate(request, layers, center, zoom, size, format, availableLayers);
String[] centerParts = center.split(",");
String[] sizeParts = size.split("x");
String url =
getUrl(
false,
wmsEntity,
capabilities,
layers,
Double.parseDouble(centerParts[0]),
Double.parseDouble(centerParts[1]),
Integer.parseInt(zoom),
Integer.parseInt(sizeParts[0]),
Integer.parseInt(sizeParts[1]),
format);
response.sendRedirect(url);
} catch (IOException e) {
LOGGER.error(e);
if (LOGGER.isDebugEnabled()) LOGGER.debug("WMS: IOException", e);
throw new HttpServerErrorException(HttpStatus.INTERNAL_SERVER_ERROR, e.getMessage());
} catch (ConfigException e) {
LOGGER.error(e);
if (LOGGER.isDebugEnabled()) LOGGER.debug("WMS: ConfigException", e);
throw new HttpServerErrorException(HttpStatus.INTERNAL_SERVER_ERROR, e.getMessage());
}
}