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35 lines
1.3 KiB
35 lines
1.3 KiB
import * as METADATA_KEY from "../constants/metadata_keys";
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import { Metadata } from "../planning/metadata";
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var traverseAncerstors = function (request, constraint) {
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var parent = request.parentRequest;
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if (parent !== null) {
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return constraint(parent) ? true : traverseAncerstors(parent, constraint);
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}
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else {
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return false;
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}
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};
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var taggedConstraint = function (key) { return function (value) {
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var constraint = function (request) {
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return request !== null && request.target !== null && request.target.matchesTag(key)(value);
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};
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constraint.metaData = new Metadata(key, value);
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return constraint;
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}; };
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var namedConstraint = taggedConstraint(METADATA_KEY.NAMED_TAG);
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var typeConstraint = function (type) { return function (request) {
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var binding = null;
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if (request !== null) {
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binding = request.bindings[0];
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if (typeof type === "string") {
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var serviceIdentifier = binding.serviceIdentifier;
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return serviceIdentifier === type;
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}
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else {
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var constructor = request.bindings[0].implementationType;
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return type === constructor;
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}
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}
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return false;
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}; };
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export { traverseAncerstors, taggedConstraint, namedConstraint, typeConstraint };
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