apache/shenyu · error · ShenyuException

e.getMessage()

Error message

e.getMessage()

What it means

NacosDataChangedInit.dataIdNotExist checks whether a plugin's dataId already exists in Nacos by calling configService.getConfig. On NacosException, the original message is wrapped in a ShenyuException and rethrown, surfacing Nacos client errors during the initial data check.

Solutions

1. Check Nacos server address/namespace/group configuration (nacos.server-addr, namespace) in application.yml.
2. Verify Nacos is reachable: curl http://<nacos-host>:8848/nacos and check firewalls.
3. Read the wrapped e.getMessage() and LOG output — it carries the underlying NacosException reason; fix that cause.
4. If Nacos auth is enabled, supply username/password credentials for the config service.

Example fix

// before
try { ... } catch (NacosException e) {
    throw new ShenyuException(e.getMessage());
}
// after — surface cause chain for diagnosis
catch (NacosException e) {
    throw new ShenyuException("Nacos config check failed for dataId " + pluginDataId, e);
}

// pre-check
if (!nacosReachable(serverAddr, timeoutMs)) { throw new IllegalStateException("Nacos unreachable at " + serverAddr); }

null

try { return dataIdNotExist(pluginName); } catch (ShenyuException e) { log.error("Nacos init check failed: {}", e.getMessage(), e); /* decide: abort startup or default to not-exist */ }

When it happens

Trigger: Calling dataIdNotExist(pluginName) (during admin startup init) when the Nacos server is unreachable, credentials/namespace are wrong, or the Nacos SDK returns any NacosException (timeouts, connection refused, invalid group).

Common situations: Nacos server down or on a different host/port, wrong namespace configured, network/firewall blocking 8848, Nacos auth enabled but no credentials supplied, or group name mismatch.

Related errors

• e.getMessage()
• apollo client getItemValue time out
• sync.consul.url can not be null.
• sync.consul.url formatter is not incorrect.
• e.getMessage()

AI-assisted analysis of apache/shenyu@567142e072 (2026-09-12). Data as JSON: /api/errors/326b2c54f0f3b31c. Report an issue: GitHub.

Appendix: source

Thrown at shenyu-admin-listener/shenyu-admin-listener-nacos/src/main/java/org/apache/shenyu/admin/listener/nacos/NacosDataChangedInit.java:67

        this.configService = configService;
    }

    @Override
    protected boolean notExist() {
        return Stream.of(NacosPathConstants.PLUGIN_DATA_ID, NacosPathConstants.AUTH_DATA_ID, NacosPathConstants.META_DATA_ID, NacosPathConstants.PROXY_SELECTOR_DATA_ID)
                .map(NodeDataPathUtils::appendListStuff)
                .allMatch(this::dataIdNotExist);
    }

    private boolean dataIdNotExist(final String pluginDataId) {
        try {
            return Objects.isNull(
                    configService.getConfig(pluginDataId,
                            NacosPathConstants.GROUP,
                            NacosPathConstants.DEFAULT_TIME_OUT));
        } catch (NacosException e) {
            LOG.error("Get data from nacos error.", e);
            throw new ShenyuException(e.getMessage());
        }
    }

}

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