Examples with PreviousRequestException org.folio.rest.tools.client.exceptions.PreviousRequestException used on opensource projects

Example 1 with PreviousRequestException

use of org.folio.rest.tools.client.exceptions.PreviousRequestException in project raml-module-builder by folio-org.

the class HttpModuleClient2 method chainedRequest.

/**
 * A request that should be used within a thenCompose() completable future call and receive as
 * input a Response object from the previous request.
 * The chainedRequest will
 * 1. callback to the passed in Consumer with the Response of the previous request for handling
 * 2. if the passed in Response contains errors - the current request will not be sent and a
 * completable future will be returned indicating that the request was not run
 * 3. replace placeholder in the url {a.b[0]} with actual values appearing in the json passed in
 * by the thenCompose(). For example: passing in:
 * http://localhost:9130/users/{users[0].username}
 * will look in the passed in json for the value found in the first user in a json array[].username
 * NOTE that if a template has a placeholder, and the path indicated in the placeholder does not
 * exist in the passed in Response - the current request will not be sent and a completeable future
 * with a Response (containing the error) will be returned
 * 4. build a cql via values in the passed in json
 * 5. Send the request
 * @param urlTempate
 * @param headers
 * @param inheritOkapiHeaders - take all okapi headers in passed in Response and over write / add to this request
 * @param cql
 * @param processPassedInResponse
 * @return
 */
@Override
public Function<Response, CompletableFuture<Response>> chainedRequest(String urlTempate, Map<String, String> headers, boolean inheritOkapiHeaders, boolean cache, BuildCQL cql, Consumer<Response> processPassedInResponse) {
    try {
        List<String> replace = getTagValues(urlTempate);
        return (resp) -> {
            // create a new request based on the content of the passed in response (resp)//
            try {
                // response for errors / exceptions and return accordingly if found//
                if (processPassedInResponse != null) {
                    processPassedInResponse.accept(resp);
                }
                if (resp.getError() != null || resp.getException() != null) {
                    CompletableFuture<Response> cf = new CompletableFuture<>();
                    PreviousRequestException pre = new PreviousRequestException("for template, " + urlTempate);
                    cf.complete(createResponse(urlTempate, pre));
                    return cf;
                }
                int size = replace.size();
                String newURL = urlTempate;
                if (size > 0) {
                    JsonPathParser jpp = new JsonPathParser(resp.getBody());
                    for (int i = 0; i < size; i++) {
                        String val = (String) jpp.getValueAt(replace.get(i));
                        if (val == null) {
                            log.error("Unable to replace {" + replace.get(i) + "} with content from received json result, does the json contain this field? Endpoint: " + resp.endpoint);
                            PopulateTemplateException pe = new PopulateTemplateException("Missing {" + replace.get(i) + "} value from results received from endpoint " + resp.endpoint);
                            CompletableFuture<Response> cf = new CompletableFuture<>();
                            cf.complete(createResponse(urlTempate, pe));
                            return cf;
                        }
                        newURL = urlTempate.replace("{" + replace.get(i) + "}", val);
                    }
                }
                if (cql != null) {
                    cql.setResponse(resp);
                }
                // call request//
                if (inheritOkapiHeaders) {
                    mergeHeaders(headers, resp.headers, resp.endpoint);
                }
                return request(newURL, headers, cache, cql);
            } catch (Exception e) {
                CompletableFuture<Response> cf = new CompletableFuture<>();
                cf.complete(createResponse(urlTempate, e));
                return cf;
            }
        };
    } catch (Exception e) {
        log.error(e.getMessage(), e);
    }
    return null;
}