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package org.onap.ccsdk.sli.adaptors.messagerouter.consumer.provider.impl;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.nio.charset.StandardCharsets;
import java.util.Properties;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class ConsumerFactory {
private static final Logger LOG = LoggerFactory.getLogger(ConsumerFactory.class);
// Default values to minimize required configuration
private static final int DEFAULT_FETCH_PAUSE = 5000;
private static final int DEFAULT_CONNECT_TIMEOUT = 30000;
private static final int DEFAULT_READ_TIMEOUT = 180000;
private static final int DEFAULT_LIMIT = 5; // Limits the number of messages pulled in a single GET request
private static final int DEFAULT_TIMEOUT_QUERY_PARAM_VALUE = 15000;
private static final String DEFAULT_AUTH_METHOD = "basic";
// Required properties
protected final String username;
protected final String password;
protected final String host;
private final String group;
private final String id;
// Optional properties
protected Integer connectTimeout;
protected Integer readTimeout;
private Integer fetchPause;
private Integer limit;
private Integer timeoutQueryParamValue;
private String filter;
protected String auth;
public String getAuth() {
return auth;
}
public void setAuth(String auth) {
this.auth = auth;
}
public Integer getConnectTimeout() {
return connectTimeout;
}
public void setConnectTimeout(Integer connectTimeout) {
this.connectTimeout = connectTimeout;
}
public Integer getReadTimeout() {
return readTimeout;
}
public void setReadTimeout(Integer readTimeout) {
this.readTimeout = readTimeout;
}
public Integer getFetchPause() {
return fetchPause;
}
public void setFetchPause(Integer fetchPause) {
this.fetchPause = fetchPause;
}
public Integer getLimit() {
return limit;
}
public void setLimit(Integer limit) {
this.limit = limit;
}
public Integer getTimeoutQueryParamValue() {
return timeoutQueryParamValue;
}
public void setTimeoutQueryParamValue(Integer timeoutQueryParamValue) {
this.timeoutQueryParamValue = timeoutQueryParamValue;
}
public String getFilter() {
return filter;
}
public void setFilter(String filter) {
processFilter(filter);
}
public ConsumerFactory(String username, String password, String host, String group, String id, Integer connectTimeout, Integer readTimeout) {
this.username = username;
this.password = password;
this.host = host;
this.group = group;
this.id = id;
setDefaults();
}
public ConsumerFactory(Properties properties) {
// Required properties
username = properties.getProperty("username");
password = properties.getProperty("password");
host = properties.getProperty("host");
auth = properties.getProperty("auth");
group = properties.getProperty("group");
id = properties.getProperty("id");
// Optional properties
connectTimeout = readOptionalInteger(properties, "connectTimeoutSeconds");
readTimeout = readOptionalInteger(properties, "readTimeoutMinutes");
fetchPause = readOptionalInteger(properties, "fetchPause");
limit = readOptionalInteger(properties, "limit");
timeoutQueryParamValue = readOptionalInteger(properties, "timeout");
processFilter(properties.getProperty("filter"));
setDefaults();
}
private Integer readOptionalInteger(Properties properties, String propertyName) {
String stringValue = properties.getProperty(propertyName);
if (stringValue != null && stringValue.length() > 0) {
try {
return Integer.valueOf(stringValue);
} catch (NumberFormatException e) {
LOG.error("property " + propertyName + " had the value " + stringValue + " that could not be converted to an Integer", e);
}
}
return null;
}
public PollingConsumerImpl createPollingClient() {
return new PollingConsumerImpl(username, password, host, auth, connectTimeout, readTimeout, fetchPause, group, id, filter, limit, timeoutQueryParamValue);
}
public PullingConsumerImpl createPullingClient() {
return new PullingConsumerImpl(username, password, host, auth, connectTimeout, readTimeout, group, id, filter, limit, timeoutQueryParamValue);
}
private void processFilter(String filterString) {
if (filterString != null) {
if (filterString.length() > 0) {
try {
filter = URLEncoder.encode(filterString, StandardCharsets.UTF_8.name());
} catch (UnsupportedEncodingException e) {
LOG.warn("Couldn't encode filter string. Filter will be ignored.", e);
filter = null;
}
} else {
filter = null;
}
}
}
private void setDefaults() {
if (connectTimeout == null) {
connectTimeout = DEFAULT_CONNECT_TIMEOUT;
}
if (readTimeout == null) {
readTimeout = DEFAULT_READ_TIMEOUT;
}
if (fetchPause == null) {
fetchPause = DEFAULT_FETCH_PAUSE;
}
if (limit == null) {
limit = DEFAULT_LIMIT;
}
if (timeoutQueryParamValue == null) {
timeoutQueryParamValue = DEFAULT_TIMEOUT_QUERY_PARAM_VALUE;
}
if (auth == null) {
auth = DEFAULT_AUTH_METHOD;
}
}
}
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