Examples with ConfigurationException org.apache.knox.gateway.config.ConfigurationException used on opensource projects

Example 1 with ConfigurationException

use of org.apache.knox.gateway.config.ConfigurationException in project knox by apache.

the class RESTInvoker method invoke.

JSONObject invoke(String url, String username, String passwordAlias) {
    JSONObject result = null;
    CloseableHttpResponse response = null;
    try {
        HttpGet request = new HttpGet(url);
        // If no configured username, then use default username alias
        String password = null;
        if (username == null) {
            if (aliasService != null) {
                try {
                    char[] defaultUser = aliasService.getPasswordFromAliasForGateway(DEFAULT_USER_ALIAS);
                    if (defaultUser != null) {
                        username = new String(defaultUser);
                    }
                } catch (AliasServiceException e) {
                    log.aliasServiceUserError(DEFAULT_USER_ALIAS, e.getLocalizedMessage());
                }
            }
            // If username is still null
            if (username == null) {
                log.aliasServiceUserNotFound();
                throw new ConfigurationException("No username is configured for Ambari service discovery.");
            }
        }
        if (aliasService != null) {
            // If no password alias is configured, then try the default alias
            if (passwordAlias == null) {
                passwordAlias = DEFAULT_PWD_ALIAS;
            }
            try {
                char[] pwd = aliasService.getPasswordFromAliasForGateway(passwordAlias);
                if (pwd != null) {
                    password = new String(pwd);
                }
            } catch (AliasServiceException e) {
                log.aliasServicePasswordError(passwordAlias, e.getLocalizedMessage());
            }
        }
        // If the password could not be determined
        if (password == null) {
            log.aliasServicePasswordNotFound();
            throw new ConfigurationException("No password is configured for Ambari service discovery.");
        }
        // Add an auth header if credentials are available
        String encodedCreds = org.apache.commons.codec.binary.Base64.encodeBase64String((username + ":" + password).getBytes());
        request.addHeader(new BasicHeader("Authorization", "Basic " + encodedCreds));
        // Ambari CSRF protection
        request.addHeader("X-Requested-By", "Knox");
        response = httpClient.execute(request);
        if (HttpStatus.SC_OK == response.getStatusLine().getStatusCode()) {
            HttpEntity entity = response.getEntity();
            if (entity != null) {
                result = (JSONObject) JSONValue.parse((EntityUtils.toString(entity)));
                log.debugJSON(result.toJSONString());
            } else {
                log.noJSON(url);
            }
        } else {
            log.unexpectedRestResponseStatusCode(url, response.getStatusLine().getStatusCode());
        }
    } catch (ConnectTimeoutException e) {
        log.restInvocationTimedOut(url, e);
    } catch (IOException e) {
        log.restInvocationError(url, e);
    } finally {
        if (response != null) {
            try {
                response.close();
            } catch (IOException e) {
            // Ignore
            }
        }
    }
    return result;
}

Example 2 with ConfigurationException

use of org.apache.knox.gateway.config.ConfigurationException in project knox by apache.

the class DefaultConfigurationInjector method injectFieldValue.

private void injectFieldValue(Field field, Object target, ConfigurationAdapter adapter, ConfigurationBinding binding) throws ConfigurationException {
    Configure annotation = field.getAnnotation(Configure.class);
    if (annotation != null) {
        Alias alias = field.getAnnotation(Alias.class);
        String name = getConfigName(field, alias);
        String bind = getBindName(target, name, binding);
        Object value = retrieveValue(target, bind, name, field.getType(), adapter, binding);
        if (value == null) {
            Optional optional = field.getAnnotation(Optional.class);
            if (optional == null) {
                throw new ConfigurationException(String.format("Failed to find configuration for %s bound to %s of %s via %s", bind, name, target.getClass().getName(), adapter.getClass().getName()));
            }
        } else {
            try {
                if (!field.isAccessible()) {
                    field.setAccessible(true);
                }
                field.set(target, value);
            } catch (Exception e) {
                throw new ConfigurationException(String.format("Failed to inject field configuration property %s of %s", name, target.getClass().getName()), e);
            }
        }
    }
}

Example 3 with ConfigurationException

use of org.apache.knox.gateway.config.ConfigurationException in project knox by apache.

the class ConfigurationAdapterFactory method get.

public static ConfigurationAdapter get(Object config) throws ConfigurationException {
    if (config == null) {
        throw new NullPointerException("Configuration adapter instantiation impossible for null config object.");
    }
    try {
        Map<Class<?>, Class<? extends ConfigurationAdapter>> adapters = getAdapters();
        Class configType = config.getClass();
        Class adapterType = findAdapterTypeForConfigTypeOrParent(adapters, configType);
        if (adapterType == null) {
            throw new ConfigurationException("No configuration adapter found for config type " + configType.getName());
        }
        Constructor c = findConstructorForConfigType(adapterType, configType);
        if (!c.isAccessible()) {
            c.setAccessible(true);
        }
        Object adapter = c.newInstance(config);
        return ConfigurationAdapter.class.cast(adapter);
    } catch (ConfigurationException e) {
        throw e;
    } catch (Exception e) {
        throw new ConfigurationException("Configuration adapter instantiation failed.", e);
    }
}

Example 4 with ConfigurationException

use of org.apache.knox.gateway.config.ConfigurationException in project knox by apache.

the class DefaultConfigurationInjector method injectMethodValue.

private void injectMethodValue(Method method, Object target, ConfigurationAdapter adapter, ConfigurationBinding binding) throws ConfigurationException {
    Configure methodTag = method.getAnnotation(Configure.class);
    if (methodTag != null) {
        Alias aliasTag = method.getAnnotation(Alias.class);
        String methodName = getConfigName(method, aliasTag);
        Class[] argTypes = method.getParameterTypes();
        Object[] args = new Object[argTypes.length];
        Annotation[][] argTags = method.getParameterAnnotations();
        for (int i = 0; i < argTypes.length; i++) {
            String argName = getConfigName(methodName, argTags[i]);
            String bndName = getBindName(target, argName, binding);
            Object argValue = retrieveValue(target, bndName, argName, argTypes[i], adapter, binding);
            if (argValue == null) {
                Default defTag = findAnnotation(argTags[i], Default.class);
                if (defTag != null) {
                    String strValue = defTag.value();
                    argValue = convertValue(target, argName, strValue, argTypes[i]);
                } else {
                    throw new ConfigurationException(String.format("Failed to find configuration for %s as %s of %s via %s", bndName, argName, target.getClass().getName(), adapter.getClass().getName()));
                }
            }
            args[i] = argValue;
        }
        if (!method.isAccessible()) {
            method.setAccessible(true);
        }
        try {
            method.invoke(target, args);
        } catch (Exception e) {
            throw new ConfigurationException(String.format("Failed to inject method configuration via %s of %s", methodName, target.getClass().getName()), e);
        }
    }
}