com.sap.cds.repackaged.audit.client.impl.ServiceCredentialParser Maven / Gradle / Ivy

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package com.sap.cds.repackaged.audit.client.impl;

import java.io.IOException;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.sap.cds.repackaged.audit.api.exception.ClientInitializationException;
import com.sap.xs.env.Credentials;

public class ServiceCredentialParser {
    private static final Logger LOGGER = LoggerFactory.getLogger(ServiceCredentialParser.class);

    private static final String UAA_PARAMETER_NAME = "uaa";
    private static final String NO_UAA_PARAMETER_DETECTED =
        "No \"uaa\" parameter detected in the service configuration, this should be the standard plan scenario";
    private static final String PARSING_CREDENTIALS_ERROR = "Problem occurred while trying to parse XSUAA credentials";

    private static final ObjectMapper MAPPER = new ObjectMapper();
    private Credentials serviceCredentials;

    public ServiceCredentialParser(Credentials serviceCredentials) {
        this.serviceCredentials = serviceCredentials;
    }

    public OAuthCredentials parseCredentials() {
        final Object uaaObj = serviceCredentials.any()
                .get(UAA_PARAMETER_NAME);
        if (uaaObj == null) {
            LOGGER.info(NO_UAA_PARAMETER_DETECTED);
            return null;
        }
        try {
            String jsonInString = MAPPER.writeValueAsString(uaaObj);
            OAuthCredentials oauthCredentials = MAPPER.readValue(jsonInString, OAuthCredentials.class);
            return oauthCredentials;
        } catch (IOException e) {
            throw new ClientInitializationException(PARSING_CREDENTIALS_ERROR, e);
        }
    }

}