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/*
* Copyright 2009 Mike Cumings
*
* 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
*
* http://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.kenai.jbosh;
import java.util.HashMap;
import java.util.Map;
/**
* Terminal binding conditions and their associated messages.
*/
final class TerminalBindingCondition {
/**
* Map of condition names to condition instances.
*/
private static final Map<String, TerminalBindingCondition>
COND_TO_INSTANCE = new HashMap<String, TerminalBindingCondition>();
/**
* Map of HTTP response codes to condition instances.
*/
private static final Map<Integer, TerminalBindingCondition>
CODE_TO_INSTANCE = new HashMap<Integer, TerminalBindingCondition>();
static final TerminalBindingCondition BAD_REQUEST =
createWithCode("bad-request", "The format of an HTTP header or "
+ "binding element received from the client is unacceptable "
+ "(e.g., syntax error).", Integer.valueOf(400));
static final TerminalBindingCondition HOST_GONE =
create("host-gone", "The target domain specified in the 'to' "
+ "attribute or the target host or port specified in the 'route' "
+ "attribute is no longer serviced by the connection manager.");
static final TerminalBindingCondition HOST_UNKNOWN =
create("host-unknown", "The target domain specified in the 'to' "
+ "attribute or the target host or port specified in the 'route' "
+ "attribute is unknown to the connection manager.");
static final TerminalBindingCondition IMPROPER_ADDRESSING =
create("improper-addressing", "The initialization element lacks a "
+ "'to' or 'route' attribute (or the attribute has no value) but "
+ "the connection manager requires one.");
static final TerminalBindingCondition INTERNAL_SERVER_ERROR =
create("internal-server-error", "The connection manager has "
+ "experienced an internal error that prevents it from servicing "
+ "the request.");
static final TerminalBindingCondition ITEM_NOT_FOUND =
createWithCode("item-not-found", "(1) 'sid' is not valid, (2) "
+ "'stream' is not valid, (3) 'rid' is larger than the upper limit "
+ "of the expected window, (4) connection manager is unable to "
+ "resend response, (5) 'key' sequence is invalid.",
Integer.valueOf(404));
static final TerminalBindingCondition OTHER_REQUEST =
create("other-request", "Another request being processed at the "
+ "same time as this request caused the session to terminate.");
static final TerminalBindingCondition POLICY_VIOLATION =
createWithCode("policy-violation", "The client has broken the "
+ "session rules (polling too frequently, requesting too "
+ "frequently, sending too many simultaneous requests).",
Integer.valueOf(403));
static final TerminalBindingCondition REMOTE_CONNECTION_FAILED =
create("remote-connection-failed", "The connection manager was "
+ "unable to connect to, or unable to connect securely to, or has "
+ "lost its connection to, the server.");
static final TerminalBindingCondition REMOTE_STREAM_ERROR =
create("remote-stream-error", "Encapsulated transport protocol "
+ "error.");
static final TerminalBindingCondition SEE_OTHER_URI =
create("see-other-uri", "The connection manager does not operate "
+ "at this URI (e.g., the connection manager accepts only SSL or "
+ "TLS connections at some https: URI rather than the http: URI "
+ "requested by the client).");
static final TerminalBindingCondition SYSTEM_SHUTDOWN =
create("system-shutdown", "The connection manager is being shut "
+ "down. All active HTTP sessions are being terminated. No new "
+ "sessions can be created.");
static final TerminalBindingCondition UNDEFINED_CONDITION =
create("undefined-condition", "Unknown or undefined error "
+ "condition.");
/**
* Condition name.
*/
private final String cond;
/**
* Descriptive message.
*/
private final String msg;
/**
* Private constructor to pre
*/
private TerminalBindingCondition(
final String condition,
final String message) {
cond = condition;
msg = message;
}
/**
* Helper method to call the helper method to add entries.
*/
private static TerminalBindingCondition create(
final String condition,
final String message) {
return createWithCode(condition, message, null);
}
/**
* Helper method to add entries.
*/
private static TerminalBindingCondition createWithCode(
final String condition,
final String message,
final Integer code) {
if (condition == null) {
throw(new IllegalArgumentException(
"condition may not be null"));
}
if (message == null) {
throw(new IllegalArgumentException(
"message may not be null"));
}
if (COND_TO_INSTANCE.get(condition) != null) {
throw(new IllegalStateException(
"Multiple definitions of condition: " + condition));
}
TerminalBindingCondition result =
new TerminalBindingCondition(condition, message);
COND_TO_INSTANCE.put(condition, result);
if (code != null) {
if (CODE_TO_INSTANCE.get(code) != null) {
throw(new IllegalStateException(
"Multiple definitions of code: " + code));
}
CODE_TO_INSTANCE.put(code, result);
}
return result;
}
/**
* Lookup the terminal binding condition instance with the condition
* name specified.
*
* @param condStr condition name
* @return terminal binding condition instance, or {@code null} if no
* instance is known by the name specified
*/
static TerminalBindingCondition forString(final String condStr) {
return COND_TO_INSTANCE.get(condStr);
}
/**
* Lookup the terminal binding condition instance associated with the
* HTTP response code specified.
*
* @param httpRespCode HTTP response code
* @return terminal binding condition instance, or {@code null} if no
* instance is known by the response code specified
*/
static TerminalBindingCondition forHTTPResponseCode(final int httpRespCode) {
return CODE_TO_INSTANCE.get(Integer.valueOf(httpRespCode));
}
/**
* Get the name of the condition.
*
* @return condition name
*/
String getCondition() {
return cond;
}
/**
* Get the human readable error message associated with this condition.
*
* @return error message
*/
String getMessage() {
return msg;
}
}
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