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PayPal SDK for integrating with the REST APIs
package com.paypal.base;
import com.paypal.base.util.ResourceLoader;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.security.AccessControlException;
import java.util.*;
/**
* ConfigManager loads configuration from 'sdk_config.properties'
* file found in the classpath. There are certain default parameters that the
* system chooses to use if not seen a part of the configuration. They are
* enumerated below with the defaults is parenthesis
*
* http.ConnectionTimeOut(5000 ms), http.Retry(2), http.ReadTimeOut(30000 ms),
* http.MaxConnections(100), http.IPAddress(127.0.0.1),
* http.GoogleAppEngine(false)
*
*/
public final class ConfigManager {
private static final Logger log = LoggerFactory.getLogger(ConfigManager.class);
/**
* Singleton instance variable
*/
private static ConfigManager conf;
/**
* Underlying property implementation
*/
private Properties properties;
/**
* Initialized notifier
*/
private boolean propertyLoaded = false;
/**
* Map View of internal {@link Properties}
*/
private Map mapView = null;
/**
* Map View of internal Default {@link Properties}
*/
private static Map defaultMapView = null;
/**
* Default {@link Properties}
*/
private static final Properties DEFAULT_PROPERTIES;
// Initialize DEFAULT_PROPERTIES
static {
DEFAULT_PROPERTIES = new Properties();
DEFAULT_PROPERTIES.put(Constants.HTTP_CONNECTION_TIMEOUT, "5000");
DEFAULT_PROPERTIES.put(Constants.HTTP_CONNECTION_RETRY, "2");
DEFAULT_PROPERTIES.put(Constants.HTTP_CONNECTION_READ_TIMEOUT, "30000");
DEFAULT_PROPERTIES.put(Constants.HTTP_CONNECTION_MAX_CONNECTION, "100");
DEFAULT_PROPERTIES.put(Constants.DEVICE_IP_ADDRESS, "127.0.0.1");
DEFAULT_PROPERTIES.put(Constants.GOOGLE_APP_ENGINE, "false");
DEFAULT_PROPERTIES.put(Constants.SSLUTIL_JRE, "SunJSSE");
DEFAULT_PROPERTIES.put(Constants.SSLUTIL_PROTOCOL, "TLS");
DEFAULT_PROPERTIES.put(Constants.PAYPAL_TRUST_CERT_URL, "DigiCertSHA2ExtendedValidationServerCA.crt");
DEFAULT_PROPERTIES.put(Constants.PAYPAL_WEBHOOK_CERTIFICATE_AUTHTYPE, "RSA");
defaultMapView = new HashMap();
for (Object object : DEFAULT_PROPERTIES.keySet()) {
defaultMapView.put(object.toString().trim(), DEFAULT_PROPERTIES
.getProperty(object.toString()).trim());
}
}
/**
* Private constructor
*/
private ConfigManager() {
/*
* Load configuration for default 'sdk_config.properties'
*/
ResourceLoader resourceLoader = new ResourceLoader(
Constants.DEFAULT_CONFIGURATION_FILE);
properties = new Properties();
try {
InputStream inputStream = resourceLoader.getInputStream();
properties.load(inputStream);
} catch (IOException e) {
// We tried reading the config, but it seems like you dont have it. Skipping...
log.debug(Constants.DEFAULT_CONFIGURATION_FILE + " not present. Skipping...");
} catch (AccessControlException e) {
log.debug("Unable to read " + Constants.DEFAULT_CONFIGURATION_FILE + ". Skipping...");
} finally {
setPropertyLoaded(true);
}
}
/**
* Singleton accessor method
*
* @return ConfigManager object
*/
public static ConfigManager getInstance() {
synchronized (ConfigManager.class) {
if (conf == null) {
conf = new ConfigManager();
}
}
return conf;
}
/**
* Returns the Default {@link Properties} of System Configuration
*
* @return Default {@link Properties}
*/
public static Properties getDefaultProperties() {
return DEFAULT_PROPERTIES;
}
/**
* Returns a {@link Map} view of Default {@link Properties}
*
* @return {@link Map} view of Default {@link Properties}
*/
public static Map getDefaultSDKMap() {
return new HashMap(defaultMapView);
}
/**
* Combines some {@link Properties} with Default {@link Properties}
*
* @param receivedProperties
* Properties used to combine with Default {@link Properties}
*
* @return Combined {@link Properties}
*/
public static Properties combineDefaultProperties(
Properties receivedProperties) {
Properties combinedProperties = new Properties(getDefaultProperties());
if ((receivedProperties != null) && (receivedProperties.size() > 0)) {
ByteArrayOutputStream bos = new ByteArrayOutputStream(1024);
try {
receivedProperties.store(bos, null);
combinedProperties.load(new ByteArrayInputStream(bos
.toByteArray()));
} catch (IOException e) {
// Something failed trying to load the properties. Skipping...
}
}
return combinedProperties;
}
/**
* Loads the internal properties with the passed {@link InputStream}
*
* @deprecated This code was used for older integrations. Not valid anymore. To be removed in the next major release.
* @param is
* InputStream
*
* @throws IOException
*/
public void load(InputStream is) throws IOException {
properties = new Properties();
properties.load(is);
if (!propertyLoaded) {
setPropertyLoaded(true);
}
}
/**
* Initializes the internal properties with the passed {@link Properties}
* instance
*
* @deprecated This code was used for older integrations. Not valid anymore. To be removed in the next major release.
* @param properties
* Properties instance
*
*/
public void load(Properties properties) {
if (properties == null) {
throw new IllegalArgumentException(
"Initialization properties cannot be null");
}
this.properties = properties;
if (!propertyLoaded) {
setPropertyLoaded(true);
}
}
/**
* Constructs a {@link Map} object from the underlying {@link Properties}.
* The {@link Properties} object is loaded for 'sdk_config.properties' file
* in the classpath
*
* @return {@link Map}
*/
public Map getConfigurationMap() {
if (mapView == null) {
synchronized (DEFAULT_PROPERTIES) {
mapView = new HashMap();
if (properties != null) {
for (Object object : properties.keySet()) {
mapView.put(object.toString().trim(), properties
.getProperty(object.toString()).trim());
}
}
}
}
return new HashMap(mapView);
}
/**
* Returns a value for the corresponding key
*
* @deprecated This code was used for older integrations. Not valid anymore. To be removed in the next major release.
*
* @param key
* String key
* @return String value
*/
public String getValue(String key) {
return properties.getProperty(key);
}
/**
* Mimics the call to {@link Properties}.getProperty(key, defaultValue)
*
* @deprecated This code was used for older integrations. Not valid anymore. To be removed in the next major release.
*
* @param key
* String key to search in properties file
* @param defaultValue
* Default value to be sent in case of a miss
* @return String value corresponding to the key or default value
*/
public String getValueWithDefault(String key, String defaultValue) {
return properties.getProperty(key, defaultValue);
}
/**
* Gets all the values in the particular category in configuration (eg:
* acct)
*
* @deprecated This code was used for older integrations. Not valid anymore. To be removed in the next major release.
*
* @param category
* @return Map
*/
public Map getValuesByCategory(String category) {
String key;
HashMap map = new HashMap();
for (Object obj : properties.keySet()) {
key = (String) obj;
if (key.contains(category)) {
map.put(key, properties.getProperty(key));
}
}
return map;
}
/**
* Returns the key prefixes for all configured accounts
*
* @deprecated This code is not used anymore. This was used for older sdk_config.properties parsing.
*
* @return {@link Set} of Accounts
*/
public Set getNumOfAcct() {
String key;
Set set = new HashSet();
for (Object obj : properties.keySet()) {
key = (String) obj;
if (key.contains("acct")) {
int pos = key.indexOf('.');
String acct = key.substring(0, pos);
set.add(acct);
}
}
return set;
}
/**
* @deprecated This code was used for older integrations. Not valid anymore. To be removed in the next major release.
* @return boolean
*/
public boolean isPropertyLoaded() {
return propertyLoaded;
}
private void setPropertyLoaded(boolean propertyLoaded) {
this.propertyLoaded = propertyLoaded;
}
}
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