com.webauthn4j.converter.util.JsonConverter Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of webauthn4j-core Show documentation
WebAuthn4J Core library
There is a newer version: 0.9.2.RELEASE
/*
 * Copyright 2018 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.webauthn4j.converter.util;

import com.fasterxml.jackson.core.JsonParseException;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.Module;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.exc.MismatchedInputException;
import com.fasterxml.jackson.databind.exc.ValueInstantiationException;
import com.fasterxml.jackson.dataformat.cbor.CBORFactory;
import com.webauthn4j.converter.exception.DataConversionException;
import com.webauthn4j.util.AssertUtil;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

import java.io.IOException;
import java.io.InputStream;
import java.io.UncheckedIOException;

/**
 * A utility class for JSON serialization/deserialization
 */
public class JsonConverter {

    private static final String INPUT_MISMATCH_ERROR_MESSAGE = "Input data does not match expected form";

    private final ObjectMapper jsonMapper;

    JsonConverter(@NotNull ObjectMapper jsonMapper) {
        AssertUtil.notNull(jsonMapper, "jsonMapper must not be null");
        AssertUtil.isTrue(!(jsonMapper.getFactory() instanceof CBORFactory), "factory of jsonMapper must be JsonFactory.");

        this.jsonMapper = jsonMapper;
    }

    public void registerModule(Module module){
        this.jsonMapper.registerModule(module);
    }

    public  @Nullable T readValue(@NotNull String src, @NotNull Class valueType) {
        try {
            return jsonMapper.readValue(src, valueType);
        } catch (MismatchedInputException | ValueInstantiationException | JsonParseException e) {
            throw new DataConversionException(INPUT_MISMATCH_ERROR_MESSAGE, e);
        } catch (IOException e) {
            throw new UncheckedIOException(e);
        }
    }

    public  @Nullable T readValue(@NotNull InputStream src, @NotNull Class valueType) {
        try {
            return jsonMapper.readValue(src, valueType);
        } catch (MismatchedInputException | ValueInstantiationException | JsonParseException e) {
            throw new DataConversionException(INPUT_MISMATCH_ERROR_MESSAGE, e);
        } catch (IOException e) {
            throw new UncheckedIOException(e);
        }
    }

    public  @Nullable T readValue(@NotNull String src, @NotNull TypeReference valueTypeRef) {
        try {
            return jsonMapper.readValue(src, valueTypeRef);
        } catch (MismatchedInputException | ValueInstantiationException | JsonParseException e) {
            throw new DataConversionException(INPUT_MISMATCH_ERROR_MESSAGE, e);
        } catch (IOException e) {
            throw new UncheckedIOException(e);
        }
    }

    public  @Nullable T readValue(@NotNull InputStream src, @NotNull TypeReference valueTypeRef) {
        try {
            return jsonMapper.readValue(src, valueTypeRef);
        } catch (MismatchedInputException | ValueInstantiationException | JsonParseException e) {
            throw new DataConversionException(INPUT_MISMATCH_ERROR_MESSAGE, e);
        } catch (IOException e) {
            throw new UncheckedIOException(e);
        }
    }

    public @NotNull byte[] writeValueAsBytes(@Nullable Object value) {
        try {
            return jsonMapper.writeValueAsBytes(value);
        } catch (JsonProcessingException e) {
            throw new UncheckedIOException(e);
        }
    }

    public @NotNull String writeValueAsString(@Nullable Object value) {
        try {
            return jsonMapper.writeValueAsString(value);
        } catch (JsonProcessingException e) {
            throw new UncheckedIOException(e);
        }
    }

}