WSO2 API 管理器 - 添加新网关的最佳方式？

Question

在我们的环境中，我们有多个网关运行（出于安全目的，针对每个客户端、环境等）。

这些网关启用了资源缓存，作为默认配置（参见 Configuring caching）

当我们必须添加新网关（例如，新客户）并尝试将已发布的 API 部署到新网关时，我们的问题就出现了。在这种情况下，我们执行以下操作：

使用网关分配一台新机器（它们是 Ubuntu AWS 中的 16.04 个实例）。
停止 API 管理器（在其他机器上运行）
在此 API 管理器中编辑 api-manager.xml，并在环境部分添加新网关
启动 API 管理器
尝试在新网关中部署 API（我们只在“发布”选项卡的“网关”部分检查新网关）

然后我们得到一个错误，因为它试图重新创建一个以前存在的缓存

TID: [-1234] [] [2018-04-19 16:53:35,698] ERROR {org.wso2.carbon.governance.registry.extensions.aspects.DefaultLifeCycle} -  org.wso2.carbon.registry.core.exceptions.RegistryException: Execution failed for action : Publish Embedded error : FaultGatewaysException:{"PUBLISHED":{"Prototype":"Error while updating API in the gateway. Error while updating API in the gateway. Cache resourceCache already exists","Production":"Error while updating API in the gateway. Error while updating API in the gateway. Cache resourceCache already exists","Sandbox":"Error while updating API in the gateway. Error while updating API in the gateway. Cache resourceCache already exists"},"UNPUBLISHED":{}} {org.wso2.carbon.governance.registry.extensions.aspects.DefaultLifeCycle}

这是我们的网关配置

<APIGateway>
<!-- The environments to which an API will be published -->
<Environments>
  <!-- Environments can be of different types. Allowed values are 'hybrid', 'production' and 'sandbox'.
             An API deployed on a 'production' type gateway will only support production keys
             An API deployed on a 'sandbox' type gateway will only support sandbox keys
             An API deployed on a 'hybrid' type gateway will support both production and sandbox keys. -->
  <!-- api-console element specifies whether the environment should be listed in API Console or not -->
  <Environment type="production" api-console="true">
    <Name>Prototype</Name>
    <Description>Prototype</Description>
    <ServerURL>https://apisandbox.example.com:9446/services/</ServerURL>
    <GatewayEndpoint>https://apisandbox.example.com:8246</GatewayEndpoint>
    <Username>${admin.username}</Username>
    <Password>${admin.password}</Password>
  </Environment>
  <Environment type="sandbox" api-console="true">
    <Name>Sandbox</Name>
    <Description>Sandbox</Description>
    <ServerURL>https://apisandbox.example.com:9446/services/</ServerURL>
    <GatewayEndpoint>https://apisandbox.example.com:8246</GatewayEndpoint>
    <Username>${admin.username}</Username>
    <Password>${admin.password}</Password>
  </Environment>
  <Environment type="production" api-console="false">
    <Name>Production</Name>
    <Description>Production</Description>
    <ServerURL>https://apigateway.example.com:9447/services/</ServerURL>
    <GatewayEndpoint>https://apigateway.example.com:8247</GatewayEndpoint>
    <Username>${admin.username}</Username>
    <Password>${admin.password}</Password>
  </Environment>
</Environments>

更糟。发生此错误后，自然的操作是降级为 CREATED API，并尝试在所有网关中再次发布。

在这种情况下，我们得到 Exception occurred while trying to invoke service method updateApiFromString之前运行个网关的错误

添加新网关的正确方法是什么？还有，我怎样才能清除损坏的状态？

Answer 1

Add/update Wso2 碳面板（主机名：9443/carbon url）中的 APILifeCycle，代码如下。转到扩展→生命周期和 edit/add APILifeCycle .

<aspect name="APILifeCycle" class="org.wso2.carbon.governance.registry.extensions.aspects.DefaultLifeCycle">
    <configuration type="literal">
        <lifecycle>
            <scxml xmlns="http://www.w3.org/2005/07/scxml"
                   version="1.0"
                   initialstate="Created">
                <state id="Created">
                    <datamodel>
                        <data name="checkItems">
                            <item name="Deprecate old versions after publish the API" forEvent="">
                            </item>
                            <item name="Require re-subscription when publish the API" forEvent="">
                            </item>
                        </data>
                        <data name="transitionExecution">
                            <execution forEvent="Deploy as a Prototype"
                                       class="org.wso2.carbon.apimgt.impl.executors.APIExecutor">
                            </execution>
                            <execution forEvent="Publish"
                                       class="org.wso2.carbon.apimgt.impl.executors.APIExecutor">
                            </execution>
                        </data>
                    </datamodel>
                    <transition event="Publish" target="Published"/>
                    <transition event="Deploy as a Prototype" target="Prototyped"/>
                </state>
                <state id="Prototyped">
                    <datamodel>
                        <data name="checkItems">
                            <item name="Deprecate old versions after publish the API" forEvent="">
                            </item>
                            <item name="Require re-subscription when publish the API" forEvent="">
                            </item>
                        </data>
                        <data name="transitionExecution">
                            <execution forEvent="Publish"
                                       class="org.wso2.carbon.apimgt.impl.executors.APIExecutor">
                            </execution>
                            <execution forEvent="Demote to Created"
                                       class="org.wso2.carbon.apimgt.impl.executors.APIExecutor">
                            </execution>
                        </data>
                    </datamodel>
                    <transition event="Publish" target="Published"/>
                    <transition event="Demote to Created" target="Created"/>
                    <transition event="Deploy as a Prototype" target="Prototyped"/>
                </state>

                <state id="Published">
                    <datamodel>
                        <data name="transitionExecution">
                            <execution forEvent="Block"
                                       class="org.wso2.carbon.apimgt.impl.executors.APIExecutor">
                            </execution>
                            <execution forEvent="Deprecate"
                                       class="org.wso2.carbon.apimgt.impl.executors.APIExecutor">
                            </execution>
                            <execution forEvent="Demote to Created"
                                       class="org.wso2.carbon.apimgt.impl.executors.APIExecutor">
                            </execution>
                            <execution forEvent="Deploy as a Prototype"
                                       class="org.wso2.carbon.apimgt.impl.executors.APIExecutor">
                            </execution>
                        </data>
                    </datamodel>
                    <transition event="Block" target="Blocked"/>
                    <transition event="Deploy as a Prototype" target="Prototyped"/>
                    <transition event="Demote to Created" target="Created"/>
                    <transition event="Deprecate" target="Deprecated"/>
                    <transition event="Publish" target="Published"/>

                </state>
                <state id="Blocked">
                    <datamodel>
                        <data name="transitionExecution">
                            <execution forEvent="Re-Publish"
                                       class="org.wso2.carbon.apimgt.impl.executors.APIExecutor">
                            </execution>
                            <execution forEvent="Deprecate"
                                       class="org.wso2.carbon.apimgt.impl.executors.APIExecutor">
                            </execution>
                        </data>
                    </datamodel>
                    <transition event="Deprecate" target="Deprecated"/>
                    <transition event="Re-Publish" target="Published"/>
                </state>
                <state id="Deprecated">
                    <datamodel>
                        <data name="transitionExecution">
                            <execution forEvent="Retire"
                                       class="org.wso2.carbon.apimgt.impl.executors.APIExecutor">
                            </execution>
                        </data>
                    </datamodel>
                    <transition event="Retire" target="Retired"/>
                </state>
                <state id="Retired">
                </state>
            </scxml>
        </lifecycle>
    </configuration>
</aspect>

关注这个https://docs.wso2.com/display/AM200/Extending+the+API+Life+Cycle

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