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// Licensed to the Software Freedom Conservancy (SFC) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The SFC licenses this file
// to you 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 org.openqa.grid.internal.utils.configuration;
import com.google.common.annotations.VisibleForTesting;
import com.google.gson.GsonBuilder;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;
import com.google.gson.JsonSyntaxException;
import com.google.gson.annotations.Expose;
import org.openqa.grid.common.exception.GridConfigurationException;
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.function.Function;
import java.util.stream.Collectors;
import java.util.stream.Stream;
public class StandaloneConfiguration {
public static final String DEFAULT_STANDALONE_CONFIG_FILE = "org/openqa/grid/common/defaults/DefaultStandalone.json";
/*
* IMPORTANT - Keep these constant values in sync with the ones specified in
* 'defaults/DefaultStandalone.json' -- if for no other reasons documentation & consistency.
*/
/**
* Default client timeout
*/
@VisibleForTesting
static final Integer DEFAULT_TIMEOUT = 1800;
/**
* Default browser timeout
*/
@VisibleForTesting
static final Integer DEFAULT_BROWSER_TIMEOUT = 0;
/**
* Default standalone role
*/
@VisibleForTesting
static final String DEFAULT_ROLE = "standalone";
/**
* Default standalone port
*/
@VisibleForTesting
static final Integer DEFAULT_PORT = 4444;
/**
* Default state of LogeLevel.FINE log output toggle
*/
@VisibleForTesting
static final Boolean DEFAULT_DEBUG_TOGGLE = false;
/*
* config parameters which do not serialize to json
*/
@Expose( serialize = false )
// initially defaults to false from boolean primitive type
private boolean avoidProxy;
@Expose( serialize = false )
// initially defaults to false from boolean primitive type
private boolean browserSideLog;
@Expose( serialize = false )
// initially defaults to false from boolean primitive type
private boolean captureLogsOnQuit;
/*
* config parameters which serialize and deserialize to/from json
*/
/**
* Browser timeout. Default 0 (indefinite wait).
*/
@Expose
public Integer browserTimeout = DEFAULT_BROWSER_TIMEOUT;
/**
* Enable {@code LogLevel.FINE} log messages. Default {@code false}.
*/
@Expose
public Boolean debug = DEFAULT_DEBUG_TOGGLE;
/**
* Max threads for Jetty. Defaults to {@code null}.
*/
@Expose
public Integer jettyMaxThreads;
/**
* Filename to use for logging. Defaults to {@code null}.
*/
@Expose
public String log;
/**
* Port to bind to. Default determined by configuration type.
*/
@Expose
public Integer port = DEFAULT_PORT;
/**
* Server role. Default determined by configuration type.
*/
@Expose
public String role = DEFAULT_ROLE;
/**
* Client timeout. Default 1800 sec.
*/
@Expose
public Integer timeout = DEFAULT_TIMEOUT;
/**
* Creates a new configuration using the default values.
*/
public StandaloneConfiguration() {
// nothing to do.
}
/**
* @param filePath node config json file to load configuration from
*/
public static StandaloneConfiguration loadFromJSON(String filePath) {
return loadFromJSON(loadJSONFromResourceOrFile(filePath));
}
/**
* @param json JsonObject to load configuration from
*/
public static StandaloneConfiguration loadFromJSON(JsonObject json) {
try {
GsonBuilder builder = new GsonBuilder();
StandaloneConfiguration config =
builder.excludeFieldsWithoutExposeAnnotation().create().fromJson(json, StandaloneConfiguration.class);
return config;
} catch (Throwable e) {
throw new GridConfigurationException("Error with the JSON of the config : " + e.getMessage(),
e);
}
}
/**
* copy another configuration's values into this one if they are set.
*/
public void merge(StandaloneConfiguration other) {
if (other == null) {
return;
}
if (isMergeAble(other.browserTimeout, browserTimeout)) {
browserTimeout = other.browserTimeout;
}
if (isMergeAble(other.jettyMaxThreads, jettyMaxThreads)) {
jettyMaxThreads = other.jettyMaxThreads;
}
if (isMergeAble(other.timeout, timeout)) {
timeout = other.timeout;
}
// role, port, log, debug, version, enablePassThrough, and help are not merged, they are only consumed by the
// immediately running process and should never affect a remote
}
/**
* Determines if one object can be merged onto another object. Checks for {@code null},
* and empty (Collections & Maps) to make decision.
*
* @param other the object to merge. must be the same type as the 'target'
* @param target the object to merge on to. must be the same type as the 'other'
* @return whether the 'other' can be merged onto the 'target'
*/
protected boolean isMergeAble(Object other, Object target) {
// don't merge a null value
if (other == null) {
return false;
} else {
// allow any non-null value to merge over a null target.
if (target == null) {
return true;
}
}
// we know we have two objects with value.. Make sure the types are the same and
// perform additional checks.
if (! target.getClass().getSuperclass().getTypeName()
.equals(other.getClass().getSuperclass().getTypeName())) {
return false;
}
if (target instanceof Collection) {
return !((Collection) other).isEmpty();
}
if (target instanceof Map) {
return !((Map) other).isEmpty();
}
return true;
}
public String toString(String format) {
StringBuilder sb = new StringBuilder();
sb.append(toString(format, "browserTimeout", browserTimeout));
sb.append(toString(format, "debug", debug));
sb.append(toString(format, "jettyMaxThreads", jettyMaxThreads));
sb.append(toString(format, "log", log));
sb.append(toString(format, "port", port));
sb.append(toString(format, "role", role));
sb.append(toString(format, "timeout", timeout));
return sb.toString();
}
@Override
public String toString() {
return toString(" -%1$s %2$s");
}
public StringBuilder toString(String format, String name, Object value) {
StringBuilder sb = new StringBuilder();
List iterator;
if (value instanceof List) {
iterator = (List)value;
} else {
iterator = Arrays.asList(value);
}
for (Object v : iterator) {
if (v != null &&
!(v instanceof Map && ((Map) v).isEmpty()) &&
!(v instanceof Collection && ((Collection) v).isEmpty())) {
sb.append(String.format(format, name, v));
}
}
return sb;
}
/**
* Return a JsonElement representation of the configuration. Does not serialize nulls.
*/
public JsonElement toJson() {
GsonBuilder builder = new GsonBuilder();
addJsonTypeAdapter(builder);
//Note: it's important that nulls ARE NOT serialized, for backwards compatibility
return builder.excludeFieldsWithoutExposeAnnotation().create().toJsonTree(this);
}
protected void addJsonTypeAdapter(GsonBuilder builder) {
// no default implementation
}
/**
* load a JSON file from the resource or file system.
*
* @param resource file or jar resource location
* @return A JsonObject representing the passed resource argument.
*/
protected static JsonObject loadJSONFromResourceOrFile(String resource) {
try {
return new JsonParser().parse(readFileOrResource(resource)).getAsJsonObject();
} catch (JsonSyntaxException e) {
throw new GridConfigurationException("Wrong format for the JSON input : " + e.getMessage(), e);
}
}
private static String readFileOrResource(String resource) {
Stream> suppliers = Stream.of(
(path) -> {
try {
return new FileInputStream(path);
} catch (FileNotFoundException e) {
return null;
} },
(path) -> Thread.currentThread().getContextClassLoader()
.getResourceAsStream("org/openqa/grid/common/" + path),
(path) -> Thread.currentThread().getContextClassLoader().getResourceAsStream(path)
);
InputStream in = suppliers
.map(supplier -> supplier.apply(resource))
.filter(Objects::nonNull)
.findFirst()
.orElseThrow(() -> new RuntimeException(resource + " is not a valid resource."));
try(BufferedReader buffreader = new BufferedReader(new InputStreamReader(in))) {
return buffreader.lines().collect(Collectors.joining("\n"));
} catch (IOException e) {
throw new GridConfigurationException("Cannot read file or resource " + resource + ", " + e.getMessage(), e);
} finally {
try {
in.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}