Examples with Envelope i5.las2peer.api.persistency.Envelope used on opensource projects

Example 1 with Envelope

use of i5.las2peer.api.persistency.Envelope in project Distributed-Noracle-Backend by Distributed-Noracle.

the class NoracleAgentService method unsubscribeFromSpace.

@Override
public void unsubscribeFromSpace(String spaceId) throws ServiceInvocationException {
    Agent mainAgent = Context.get().getMainAgent();
    if (spaceId == null || spaceId.isEmpty()) {
        throw new InvocationBadArgumentException("No space id given");
    } else if (mainAgent instanceof AnonymousAgent) {
        throw new ServiceAccessDeniedException("You have to be logged in to unsubscribe to a space");
    }
    String envIdentifier = buildSubscriptionId(mainAgent.getIdentifier());
    Envelope env;
    SpaceSubscriptionList subscriptionList;
    try {
        try {
            env = Context.get().requestEnvelope(envIdentifier);
            subscriptionList = (SpaceSubscriptionList) env.getContent();
        } catch (EnvelopeNotFoundException e) {
            return;
        }
    } catch (EnvelopeAccessDeniedException e) {
        throw new ServiceAccessDeniedException("Envelope Access Denied");
    } catch (EnvelopeOperationFailedException e) {
        throw new InternalServiceException("Could not read envelope for space unsubscription", e);
    }
    Iterator<SpaceSubscription> itSubscription = subscriptionList.iterator();
    while (itSubscription.hasNext()) {
        SpaceSubscription subscription = itSubscription.next();
        if (subscription.getSpaceId().equals(spaceId)) {
            itSubscription.remove();
        }
    }
    env.setContent(subscriptionList);
    try {
        Context.get().storeEnvelope(env, mainAgent);
    } catch (EnvelopeAccessDeniedException e) {
        throw new ServiceAccessDeniedException("Envelope Access Denied");
    } catch (EnvelopeOperationFailedException e) {
        throw new InternalServiceException("Could not store space subscription envelope", e);
    }
}

Example 2 with Envelope

use of i5.las2peer.api.persistency.Envelope in project Distributed-Noracle-Backend by Distributed-Noracle.

the class NoracleQuestionService method createQuestion.

@Override
public Question createQuestion(String questionSpaceId, String text) throws ServiceInvocationException {
    Agent mainAgent = Context.get().getMainAgent();
    if (questionSpaceId == null || questionSpaceId.isEmpty()) {
        throw new InvocationBadArgumentException("No question space id given");
    } else if (text == null || text.isEmpty()) {
        throw new InvocationBadArgumentException("No question text given");
    } else if (mainAgent instanceof AnonymousAgent) {
        throw new ServiceNotAuthorizedException("You have to be logged in to create a question");
    }
    Space targetSpace;
    Serializable rmiResult = Context.get().invoke(new ServiceNameVersion(NoracleSpaceService.class.getCanonicalName(), NoracleService.API_VERSION), "getSpace", questionSpaceId);
    if (rmiResult instanceof Space) {
        targetSpace = (Space) rmiResult;
    } else {
        throw new InternalServiceException("Unexpected result (" + rmiResult.getClass().getCanonicalName() + ") of RMI call");
    }
    String targetReaderGroupId = targetSpace.getSpaceReaderGroupId();
    GroupAgent targetReaderGroup;
    try {
        targetReaderGroup = (GroupAgent) Context.get().requestAgent(targetReaderGroupId, mainAgent);
    } catch (AgentNotFoundException | AgentOperationFailedException e) {
        throw new InternalServiceException("Could not fetch reader group agent for space", e);
    } catch (ClassCastException e) {
        throw new InternalServiceException("Agent for space reader group is not a GroupAgent", e);
    } catch (AgentAccessDeniedException e) {
        throw new ServiceAccessDeniedException("Agent not in space reader group", e);
    }
    String questionId = buildQuestionId();
    Envelope env;
    try {
        env = Context.get().createEnvelope(getQuestionEnvelopeIdentifier(questionId), mainAgent);
    } catch (EnvelopeAccessDeniedException e) {
        throw new ServiceAccessDeniedException("Envelope Access Denied");
    } catch (EnvelopeOperationFailedException e) {
        throw new InternalServiceException("Could not create envelope for question", e);
    }
    env.addReader(targetReaderGroup);
    Question question = new Question(questionId, text, questionSpaceId, mainAgent.getIdentifier(), Instant.now().toString());
    env.setContent(question);
    try {
        Context.get().storeEnvelope(env, mainAgent);
    } catch (EnvelopeAccessDeniedException e) {
        throw new ServiceAccessDeniedException("Envelope Access Denied");
    } catch (EnvelopeOperationFailedException e) {
        throw new InternalServiceException("Could not store question envelope", e);
    }
    if (questionSpaceId != null && !questionSpaceId.isEmpty()) {
        linkQuestionToSpace(questionSpaceId, questionId);
    }
    return question;
}

Example 3 with Envelope

use of i5.las2peer.api.persistency.Envelope in project Distributed-Noracle-Backend by Distributed-Noracle.

the class NoracleQuestionService method changeQuestionDepth.

@Override
public Question changeQuestionDepth(String questionId, int depth) throws ServiceInvocationException {
    if (questionId == null) {
        throw new InvocationBadArgumentException("No question id given");
    }
    try {
        Envelope questionEnvelope = Context.get().requestEnvelope(getQuestionEnvelopeIdentifier(questionId));
        Question question = (Question) questionEnvelope.getContent();
        question.setDepth(depth);
        question.setTimestampLastModified(Instant.now().toString());
        questionEnvelope.setContent(question);
        Context.get().storeEnvelope(questionEnvelope);
        return question;
    } catch (EnvelopeNotFoundException e) {
        throw new ResourceNotFoundException("Question not found");
    } catch (EnvelopeAccessDeniedException e) {
        throw new ServiceAccessDeniedException("Envelope Access Denied");
    } catch (EnvelopeOperationFailedException e) {
        throw new InternalServiceException("Could not fetch question envelope", e);
    }
}

Example 4 with Envelope

use of i5.las2peer.api.persistency.Envelope in project Distributed-Noracle-Backend by Distributed-Noracle.

the class NoracleQuestionService method changeQuestionText.

@Override
public Question changeQuestionText(String questionId, String text) throws ServiceInvocationException {
    if (questionId == null) {
        throw new InvocationBadArgumentException("No question id given");
    }
    try {
        Envelope questionEnvelope = Context.get().requestEnvelope(getQuestionEnvelopeIdentifier(questionId));
        Question question = (Question) questionEnvelope.getContent();
        question.setText(text);
        question.setTimestampLastModified(Instant.now().toString());
        questionEnvelope.setContent(question);
        Context.get().storeEnvelope(questionEnvelope);
        return question;
    } catch (EnvelopeNotFoundException e) {
        throw new ResourceNotFoundException("Question not found");
    } catch (EnvelopeAccessDeniedException e) {
        throw new ServiceAccessDeniedException("Envelope Access Denied");
    } catch (EnvelopeOperationFailedException e) {
        throw new InternalServiceException("Could not fetch question envelope", e);
    }
}

Example 5 with Envelope

use of i5.las2peer.api.persistency.Envelope in project Distributed-Noracle-Backend by Distributed-Noracle.

the class NoracleQuestionService method linkQuestionToSpace.

public boolean linkQuestionToSpace(String spaceId, String questionId) {
    int questionNumber;
    for (questionNumber = 1; questionNumber < MAX_QUESTIONS_PER_SPACE; questionNumber++) {
        try {
            Context.get().requestEnvelope(buildSpaceQuestionNumberId(spaceId, questionNumber));
        } catch (EnvelopeNotFoundException e) {
            // found free question number
            break;
        } catch (Exception e) {
        // XXX logging
        }
    }
    try {
        Envelope spaceQuestionEnv = Context.get().createEnvelope(buildSpaceQuestionNumberId(spaceId, questionNumber));
        spaceQuestionEnv.setPublic();
        spaceQuestionEnv.setContent(questionId);
        Context.get().storeEnvelope(spaceQuestionEnv);
        return true;
    } catch (EnvelopeOperationFailedException | EnvelopeAccessDeniedException e) {
        // TODO exception handling
        e.printStackTrace();
    }
    return false;
}