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sphere-common
There is a newer version: 1.0.0-M26
package io.sphere.sdk.client;

import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.JavaType;
import io.sphere.sdk.http.HttpResponse;
import io.sphere.sdk.json.JsonException;
import io.sphere.sdk.json.SphereJsonUtils;

import java.nio.charset.StandardCharsets;
import java.util.Optional;
import java.util.concurrent.*;

public final class SphereClientUtils {
    private SphereClientUtils() {
    }

    /**
     * Waits with a timeout for RESPONSES of a commercetools client wrapped in a {@link CompletionStage}.
     * This method should not be used for other {@link CompletionStage}s since it is throwing {@link io.sphere.sdk.models.SphereException}s.
     *
     * @param completionStage the future monad to wait for
     * @param timeout the maximum time to wait for this single request
     * @param unit the time unit of the timeout argument
     * @param  type of the result for the request
     * @return the wrapped value of {@code completionStage}
     * @throws SphereTimeoutException if a timeout occurs
     */
    public static  T blockingWait(final CompletionStage completionStage, final long timeout, final TimeUnit unit) {
        try {
            return completionStage.toCompletableFuture().get(timeout, unit);
        } catch (InterruptedException | ExecutionException e) {
            final Throwable cause =
                    e.getCause() != null && e instanceof ExecutionException
                            ? e.getCause()
                            : e;
            throw cause instanceof RuntimeException? (RuntimeException) cause : new CompletionException(cause);
        } catch (final TimeoutException e) {
            throw new SphereTimeoutException(e);
        }
    }

    public static  T deserialize(final HttpResponse httpResponse, final TypeReference typeReference) {
        return SphereJsonUtils.readObject(Optional.ofNullable(httpResponse.getResponseBody()).orElseThrow(() -> new JsonException(httpResponse)), typeReference);
    }

    public static  T deserialize(final HttpResponse httpResponse, final JavaType javaType) {
        return SphereJsonUtils.readObject(Optional.ofNullable(httpResponse.getResponseBody()).orElseThrow(() -> new JsonException(httpResponse)), javaType);
    }

    public static String getBodyAsString(final HttpResponse httpResponse) {
        return new String(httpResponse.getResponseBody(), StandardCharsets.UTF_8);
    }
}