GDALDataset* OGRPLScenesDataV1Dataset::OpenRasterScene(GDALOpenInfo* poOpenInfo,
CPLString osScene,
char** papszOptions)
{
if( !(poOpenInfo->nOpenFlags & GDAL_OF_RASTER) )
{
CPLError(CE_Failure, CPLE_AppDefined,
"The scene option must only be used with vector access");
return nullptr;
}
int nActivationTimeout = atoi(CSLFetchNameValueDef(poOpenInfo->papszOpenOptions,
"ACTIVATION_TIMEOUT", "3600"));
for( char** papszIter = papszOptions; papszIter && *papszIter; papszIter ++ )
{
char* pszKey = nullptr;
const char* pszValue = CPLParseNameValue(*papszIter, &pszKey);
if( pszValue != nullptr )
{
if( !EQUAL(pszKey, "api_key") &&
!EQUAL(pszKey, "scene") &&
!EQUAL(pszKey, "product_type") &&
!EQUAL(pszKey, "asset") &&
!EQUAL(pszKey, "catalog") &&
!EQUAL(pszKey, "itemtypes") &&
!EQUAL(pszKey, "version") &&
!EQUAL(pszKey, "follow_links") &&
!EQUAL(pszKey, "metadata"))
{
CPLError(CE_Failure, CPLE_NotSupported, "Unsupported option %s", pszKey);
CPLFree(pszKey);
return nullptr;
}
CPLFree(pszKey);
}
}
const char* pszCatalog =
CSLFetchNameValueDef(papszOptions, "itemtypes",
CSLFetchNameValueDef(papszOptions, "catalog",
CSLFetchNameValueDef(poOpenInfo->papszOpenOptions, "ITEMTYPES",
CSLFetchNameValue(poOpenInfo->papszOpenOptions, "CATALOG"))));
if( pszCatalog == nullptr )
{
CPLError(CE_Failure, CPLE_AppDefined, "Missing catalog");
return nullptr;
}
const char* pszProductType =
CSLFetchNameValueDef(papszOptions, "asset",
CSLFetchNameValueDef(papszOptions, "product_type",
CSLFetchNameValueDef(poOpenInfo->papszOpenOptions, "ASSET",
CSLFetchNameValue(poOpenInfo->papszOpenOptions, "PRODUCT_TYPE"))));
CPLString osRasterURL;
osRasterURL = m_osBaseURL;
osRasterURL += "item-types/";
osRasterURL += pszCatalog;
osRasterURL += "/items/";
osRasterURL += osScene;
osRasterURL += "/assets/";
time_t nStartTime = time(nullptr);
retry:
time_t nCurrentTime = time(nullptr);
if( nCurrentTime - nStartTime > nActivationTimeout )
{
CPLError(CE_Failure, CPLE_AppDefined, "Activation timeout reached");
return nullptr;
}
json_object* poObj = RunRequest( osRasterURL );
if( poObj == nullptr )
return nullptr;
json_object* poSubObj = nullptr;
if( pszProductType != nullptr &&
(poSubObj = CPL_json_object_object_get(poObj, pszProductType)) != nullptr )
{
/* do nothing */
}
else if( pszProductType != nullptr && !EQUAL(pszProductType, "LIST") &&
(poSubObj = CPL_json_object_object_get(poObj, pszProductType)) == nullptr )
{
CPLError(CE_Failure, CPLE_AppDefined, "Cannot find asset %s", pszProductType);
json_object_put(poObj);
return nullptr;
}
else if( pszProductType == nullptr &&
(poSubObj = CPL_json_object_object_get(poObj, "visual")) != nullptr )
{
/* do nothing */
}
else
{
json_object_iter it;
it.key = nullptr;
it.val = nullptr;
it.entry = nullptr;
char** papszSubdatasets = nullptr;
int nSubDataset = 0;
json_object_object_foreachC( poObj, it )
{
++nSubDataset;
papszSubdatasets = CSLSetNameValue(papszSubdatasets,
CPLSPrintf("SUBDATASET_%d_NAME", nSubDataset),
CPLSPrintf("Scene=%s of item types %s, asset %s",
osScene.c_str(), pszCatalog, it.key));
papszSubdatasets = CSLSetNameValue(papszSubdatasets,
CPLSPrintf("SUBDATASET_%d_DESC", nSubDataset),
CPLSPrintf("PLScenes:version=Data_V1,itemtypes=%s,scene=%s,asset=%s",
pszCatalog, osScene.c_str(), it.key));
}
json_object_put(poObj);
if( nSubDataset != 0 )
{
GDALDataset* poDS = new OGRPLScenesDataV1Dataset();
poDS->SetMetadata(papszSubdatasets, "SUBDATASETS");
CSLDestroy(papszSubdatasets);
return poDS;
}
return nullptr;
}
