/**
* {@inheritDoc}
*
* @see
* org.opencastproject.capture.admin.api.CaptureAgentStateService#setAgentState(java.lang.String,
* java.lang.String)
*/
public int setAgentState(String agentName, String state) {
// Checks the state is not null nor empty
if (StringUtils.isBlank(state)) {
logger.debug("Unable to set agent state, state is blank or null.");
return BAD_PARAMETER;
} else if (StringUtils.isBlank(agentName)) {
logger.debug("Unable to set agent state, agent name is blank or null.");
return BAD_PARAMETER;
} else if (!KNOWN_STATES.contains(state)) {
logger.warn("can not set agent to an invalid state: ", state);
return BAD_PARAMETER;
} else {
logger.debug("Agent '{}' state set to '{}'", agentName, state);
}
AgentImpl agent = getAgent(agentName);
if (agent == null) {
// If the agent doesn't exists, but the name is not null nor empty, create a new one.
logger.debug("Creating Agent {} with state {}.", agentName, state);
Organization org = securityService.getOrganization();
AgentImpl a = new AgentImpl(agentName, org.getId(), state, "", new Properties());
updateAgentInDatabase(a);
} else if (!agent.getState().equals(state)) {
// the agent is known, so set the state
logger.debug("Setting Agent {} to state {}.", agentName, state);
agent.setState(state);
updateAgentInDatabase(agent);
}
return OK;
}
public boolean setAgentUrl(String agentName, String agentUrl) {
AgentImpl agent = getAgent(agentName);
if (agent == null) {
return false;
} else {
agent.setUrl(agentUrl);
updateAgentInDatabase(agent);
}
return true;
}
/**
* {@inheritDoc}
*
* @see org.osgi.service.cm.ManagedServiceFactory#updated(java.lang.String, java.util.Dictionary)
*/
@Override
public void updated(String pid, Dictionary properties) throws ConfigurationException {
// Get the agent properties
String nameConfig = (String) properties.get("id");
if (isEmpty(nameConfig)) {
throw new ConfigurationException("id", "must be specified");
}
nameConfig = nameConfig.trim();
String urlConfig = (String) properties.get("url");
if (isEmpty(urlConfig)) {
throw new ConfigurationException("url", "must be specified");
}
urlConfig = urlConfig.trim();
String orgConfig = (String) properties.get("organization");
if (isEmpty(orgConfig)) {
throw new ConfigurationException("organization", "must be specified");
}
orgConfig = orgConfig.trim();
String schedulerRolesConfig = (String) properties.get("schedulerRoles");
if (isEmpty(schedulerRolesConfig)) {
throw new ConfigurationException("schedulerRoles", "must be specified");
}
schedulerRolesConfig = schedulerRolesConfig.trim();
// If we don't already have a mapping for this PID, create one
if (!pidMap.containsKey(pid)) {
pidMap.put(pid, nameConfig);
}
AgentImpl agent = getAgent(nameConfig, orgConfig);
if (agent == null) {
agent = new AgentImpl(nameConfig, orgConfig, UNKNOWN, urlConfig, new Properties());
} else {
agent.url = urlConfig.trim();
agent.organization = orgConfig.trim();
agent.state = UNKNOWN;
String[] schedulerRoles = schedulerRolesConfig.split(",");
for (String role : schedulerRoles) {
agent.schedulerRoles.add(role.trim());
}
}
// Update the database
logger.info("Roles '{}' may schedule '{}'", schedulerRolesConfig, agent.name);
updateAgentInDatabase(agent);
}
/**
* {@inheritDoc}
*
* @see org.opencastproject.capture.admin.api.CaptureAgentStateService#getKnownAgents()
*/
public Map<String, Agent> getKnownAgents() {
EntityManager em = null;
User user = securityService.getUser();
Organization org = securityService.getOrganization();
String orgAdmin = org.getAdminRole();
String[] roles = user.getRoles();
try {
em = emf.createEntityManager();
Query q = em.createNamedQuery("Agent.byOrganization");
q.setParameter("org", securityService.getOrganization().getId());
// Filter the results in memory if this user is not an administrator
List<AgentImpl> agents = q.getResultList();
if (!user.hasRole(SecurityConstants.GLOBAL_ADMIN_ROLE) && !user.hasRole(orgAdmin)) {
for (Iterator<AgentImpl> iter = agents.iterator(); iter.hasNext(); ) {
AgentImpl agent = iter.next();
Set<String> schedulerRoles = agent.getSchedulerRoles();
// If there are no roles associated with this capture agent, it is available to anyone who
// can pass the
// coarse-grained web layer security
if (schedulerRoles == null || schedulerRoles.isEmpty()) {
continue;
}
boolean hasSchedulerRole = false;
for (String role : roles) {
if (schedulerRoles.contains(role)) {
hasSchedulerRole = true;
break;
}
}
if (!hasSchedulerRole) {
iter.remove();
}
}
}
// Build the map that the API defines as agent name->agent
Map<String, Agent> map = new TreeMap<String, Agent>();
for (AgentImpl agent : agents) {
map.put(agent.getName(), agent);
}
return map;
} finally {
if (em != null) em.close();
}
}
/**
* {@inheritDoc}
*
* @see org.opencastproject.capture.admin.api.CaptureAgentStateService#setAgentConfiguration
*/
public int setAgentConfiguration(String agentName, Properties configuration) {
AgentImpl agent = getAgent(agentName);
if (agent != null) {
logger.debug("Setting Agent {}'s capabilities", agentName);
agent.setConfiguration(configuration);
updateAgentInDatabase(agent);
} else {
// If the agent doesn't exists, but the name is not null nor empty, create a new one.
if (StringUtils.isBlank(agentName)) {
logger.debug("Unable to set agent state, agent name is blank or null.");
return BAD_PARAMETER;
}
logger.debug("Creating Agent {} with state {}.", agentName, UNKNOWN);
Organization org = securityService.getOrganization();
AgentImpl a = new AgentImpl(agentName, org.getId(), UNKNOWN, "", configuration);
updateAgentInDatabase(a);
}
return OK;
}
/**
* Updates or adds an agent to the database.
*
* @param agent The Agent you wish to modify or add in the database.
*/
protected void updateAgentInDatabase(AgentImpl agent) {
EntityManager em = null;
EntityTransaction tx = null;
try {
em = emf.createEntityManager();
tx = em.getTransaction();
tx.begin();
AgentImpl existing = getAgent(agent.getName(), agent.getOrganization(), em);
if (existing == null) {
em.persist(agent);
} else {
existing.setConfiguration(agent.getConfiguration());
existing.setLastHeardFrom(agent.getLastHeardFrom());
existing.setState(agent.getState());
existing.setSchedulerRoles(agent.getSchedulerRoles());
existing.setUrl(agent.getUrl());
em.merge(existing);
}
tx.commit();
} catch (RollbackException e) {
logger.warn("Unable to commit to DB in updateAgent.");
throw e;
} finally {
if (em != null) em.close();
}
}
