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package eu.dnetlib.msro.worker.nodes;
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import java.lang.reflect.Field;
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import java.util.HashSet;
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import java.util.Map;
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import java.util.Map.Entry;
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import java.util.Set;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.springframework.beans.factory.BeanNameAware;
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import com.google.common.collect.Maps;
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import com.google.gson.Gson;
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import com.googlecode.sarasvati.Engine;
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import com.googlecode.sarasvati.NodeToken;
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import com.googlecode.sarasvati.mem.MemNode;
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public abstract class SarasvatiJobNode extends MemNode implements BeanNameAware {
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/**
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* logger.
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*/
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private static final Log log = LogFactory.getLog(SarasvatiJobNode.class);
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private String beanName;
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/**
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* parameter values injected as json map into subclasses instance beans.
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*/
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private String params;
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/**
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* parameter values retrieved from the sarasvati Env.
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*/
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private String envParams;
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@Override
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public void execute(final Engine engine, final NodeToken token) {
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final String prefix = "system:node:" + getName() + ":";
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for (Field field : getClass().getDeclaredFields()) {
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try {
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field.setAccessible(true);
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token.getEnv().setAttribute(prefix + field.getName(), "" + field.get(this));
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} catch (Exception e) {
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log.warn("Error accessing value of field: " + field.getName());
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}
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}
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}
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/**
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* builds a parameter map overriding values having the same name in the following order: sysparams < envparams < params
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*
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* @param token
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* @return
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*/
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protected Map<String, String> parseJsonParameters(final NodeToken token) {
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final Map<String, String> res = Maps.newHashMap();
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for (Entry<?, ?> e : asMapEntries(getEnvParams())) {
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final String param = e.getValue().toString();
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if (token.getEnv().hasAttribute(param)) {
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res.put(e.getKey().toString(), token.getEnv().getAttribute(param));
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} else {
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res.put(e.getKey().toString(), token.getFullEnv().getAttribute(param));
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}
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}
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for (Entry<?, ?> e : asMapEntries(getParams())) {
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res.put(e.getKey().toString(), e.getValue().toString());
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}
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return res;
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}
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@SuppressWarnings("unchecked")
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private Set<Map.Entry<?, ?>> asMapEntries(final String s) {
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return isSet(s) ? new Gson().fromJson(s, Map.class).entrySet() : new HashSet<Map.Entry<?, ?>>();
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}
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private boolean isSet(final String s) {
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return s != null && !s.isEmpty();
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}
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// ///////////////
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public String getBeanName() {
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return beanName;
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}
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@Override
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public void setBeanName(final String beanName) {
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this.beanName = beanName;
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}
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public String getParams() {
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return params;
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}
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public void setParams(final String params) {
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this.params = params;
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}
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public String getEnvParams() {
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return envParams;
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}
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public void setEnvParams(final String envParams) {
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this.envParams = envParams;
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}
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}
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