/**
* given a canonical uri (/db/coll) returns the mapped uri (/db/coll) relative to this context
* URLs are mapped to mongodb resources by using the mongo-mounts configuration properties
*
* @param unmappedUri
* @return
*/
public final String mapUri(String unmappedUri) {
String ret = URLUtils.removeTrailingSlashes(unmappedUri);
if (whatUri.equals("*")) {
if (!this.whereUri.equals(SLASH)) {
return this.whereUri + unmappedUri;
}
} else {
ret = URLUtils.removeTrailingSlashes(ret.replaceFirst("^" + this.whatUri, this.whereUri));
}
if (ret.isEmpty()) {
ret = SLASH;
}
return ret;
}
/**
* @param exchange the url rewriting feature is implemented by the whatUri and whereUri parameters
* <p>the exchange request path is rewritten replacing the whereUri string with the whatUri
* string the special whatUri value * means any resource: the whereUri is replaced with /
* <p>example 1
* <p>whatUri = /mydb/mycollection whereUri = /
* <p>then the requestPath / is rewritten to /mydb/mycollection
* <p>example 2
* <p>whatUri = * whereUri = /data
* <p>then the requestPath /data is rewritten to /
* @param whereUri the uri to map to
* @param whatUri the uri to map
*/
public RequestContext(HttpServerExchange exchange, String whereUri, String whatUri) {
this.whereUri =
URLUtils.removeTrailingSlashes(
whereUri == null ? null : whereUri.startsWith("/") ? whereUri : "/" + whereUri);
this.whatUri =
URLUtils.removeTrailingSlashes(
whatUri == null
? null
: whatUri.startsWith("/") || "*".equals(whatUri) ? whatUri : "/" + whatUri);
this.unmappedRequestUri = exchange.getRequestPath();
this.mappedRequestUri = unmapUri(exchange.getRequestPath());
// "/db/collection/document" --> { "", "mappedDbName", "collection", "document" }
this.pathTokens = this.mappedRequestUri.split(SLASH);
this.type = selectRequestType(pathTokens);
this.method = selectRequestMethod(exchange.getRequestMethod());
}
