/*
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* Copyright (c) 2018-2028, DreamLu All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* Neither the name of the dreamlu.net developer nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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* Author: DreamLu 卢春梦 (596392912@qq.com)
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*/
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package org.springblade.core.context;
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import lombok.RequiredArgsConstructor;
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import org.springblade.core.context.props.BladeContextProperties;
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import org.springblade.core.tool.utils.StringUtil;
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import org.springblade.core.tool.utils.ThreadLocalUtil;
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import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication;
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import org.springframework.http.HttpHeaders;
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import org.springframework.lang.Nullable;
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import java.util.function.Function;
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import static org.springblade.core.tool.constant.BladeConstant.CONTEXT_KEY;
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/**
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* blade servlet 上下文,跨线程失效
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*
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* @author L.cm
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*/
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@RequiredArgsConstructor
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@ConditionalOnWebApplication(type = ConditionalOnWebApplication.Type.SERVLET)
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public class BladeServletContext implements BladeContext {
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private final BladeContextProperties contextProperties;
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private final BladeHttpHeadersGetter httpHeadersGetter;
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@Nullable
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@Override
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public String getRequestId() {
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return get(contextProperties.getHeaders().getRequestId());
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}
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@Nullable
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@Override
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public String getAccountId() {
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return get(contextProperties.getHeaders().getAccountId());
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}
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@Nullable
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@Override
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public String getTenantId() {
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return get(contextProperties.getHeaders().getTenantId());
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}
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@Nullable
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@Override
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public String get(String ctxKey) {
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HttpHeaders headers = ThreadLocalUtil.getIfAbsent(CONTEXT_KEY, httpHeadersGetter::get);
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if (headers == null || headers.isEmpty()) {
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return null;
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}
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return headers.getFirst(ctxKey);
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}
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@Nullable
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@Override
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public <T> T get(String ctxKey, Function<String, T> function) {
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String ctxValue = get(ctxKey);
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if (StringUtil.isBlank(ctxValue)) {
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return null;
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}
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return function.apply(ctxKey);
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}
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}
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