Examples with Rule org.apache.nifi.update.attributes.Rule used on opensource projects

Example 1 with Rule

use of org.apache.nifi.update.attributes.Rule in project nifi by apache.

the class RuleResource method searchRules.

@GET
@Produces({ MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML })
@Path("/rules/search-results")
public Response searchRules(@QueryParam("processorId") final String processorId, @QueryParam("q") final String term) {
    // get the web context
    final NiFiWebConfigurationContext configurationContext = (NiFiWebConfigurationContext) servletContext.getAttribute("nifi-web-configuration-context");
    // build the web context config
    final NiFiWebRequestContext requestContext = getRequestContext(processorId);
    // load the criteria
    final Criteria criteria = getCriteria(configurationContext, requestContext);
    final List<Rule> rules = criteria.getRules();
    // generate the rules
    List<RuleDTO> ruleDtos = null;
    if (rules != null) {
        ruleDtos = new ArrayList<>(rules.size());
        for (final Rule rule : rules) {
            if (StringUtils.containsIgnoreCase(rule.getName(), term)) {
                final RuleDTO ruleDto = DtoFactory.createRuleDTO(rule);
                ruleDtos.add(ruleDto);
            }
        }
    }
    // sort the rules
    Collections.sort(ruleDtos, new Comparator<RuleDTO>() {

        @Override
        public int compare(RuleDTO r1, RuleDTO r2) {
            final Collator collator = Collator.getInstance(Locale.US);
            return collator.compare(r1.getName(), r2.getName());
        }
    });
    // create the response entity
    final RulesEntity responseEntity = new RulesEntity();
    responseEntity.setProcessorId(processorId);
    responseEntity.setRules(ruleDtos);
    // generate the response
    final ResponseBuilder response = Response.ok(responseEntity);
    return noCache(response).build();
}

Example 2 with Rule

use of org.apache.nifi.update.attributes.Rule in project nifi by apache.

the class RuleResource method getRules.

@GET
@Produces({ MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML })
@Path("/rules")
public Response getRules(@QueryParam("processorId") final String processorId, @DefaultValue("false") @QueryParam("verbose") final Boolean verbose) {
    // get the web context
    final NiFiWebConfigurationContext configurationContext = (NiFiWebConfigurationContext) servletContext.getAttribute("nifi-web-configuration-context");
    // build the web context config
    final NiFiWebRequestContext requestContext = getRequestContext(processorId);
    // load the criteria
    final Criteria criteria = getCriteria(configurationContext, requestContext);
    final List<Rule> rules = criteria.getRules();
    // generate the rules
    List<RuleDTO> ruleDtos = null;
    if (rules != null) {
        ruleDtos = new ArrayList<>(rules.size());
        for (final Rule rule : rules) {
            final RuleDTO ruleDto = DtoFactory.createRuleDTO(rule);
            ruleDtos.add(ruleDto);
            // prune if appropriate
            if (!verbose) {
                ruleDto.setConditions(null);
                ruleDto.setActions(null);
            }
        }
    }
    // create the response entity
    final RulesEntity responseEntity = new RulesEntity();
    responseEntity.setProcessorId(processorId);
    responseEntity.setRules(ruleDtos);
    // generate the response
    final ResponseBuilder response = Response.ok(responseEntity);
    return noCache(response).build();
}

Example 3 with Rule

use of org.apache.nifi.update.attributes.Rule in project nifi by apache.

the class RuleResource method getRule.

@GET
@Produces({ MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML })
@Path("/rules/{id}")
public Response getRule(@PathParam("id") final String ruleId, @QueryParam("processorId") final String processorId, @DefaultValue("false") @QueryParam("verbose") final Boolean verbose) {
    // get the web context
    final NiFiWebConfigurationContext configurationContext = (NiFiWebConfigurationContext) servletContext.getAttribute("nifi-web-configuration-context");
    // build the web context config
    final NiFiWebRequestContext requestContext = getRequestContext(processorId);
    // load the criteria and get the rule
    final Criteria criteria = getCriteria(configurationContext, requestContext);
    final Rule rule = criteria.getRule(ruleId);
    if (rule == null) {
        throw new NotFoundException();
    }
    // convert to a dto
    final RuleDTO ruleDto = DtoFactory.createRuleDTO(rule);
    // prune if appropriate
    if (!verbose) {
        ruleDto.setConditions(null);
        ruleDto.setActions(null);
    }
    // create the response entity
    final RuleEntity responseEntity = new RuleEntity();
    responseEntity.setProcessorId(processorId);
    responseEntity.setRule(ruleDto);
    // generate the response
    final ResponseBuilder response = Response.ok(responseEntity);
    return noCache(response).build();
}

Example 4 with Rule

use of org.apache.nifi.update.attributes.Rule in project nifi by apache.

the class RuleResource method updateRule.

@PUT
@Consumes({ MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML })
@Produces({ MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML })
@Path("/rules/{id}")
public Response updateRule(@Context final UriInfo uriInfo, @PathParam("id") final String ruleId, final RuleEntity requestEntity) {
    // get the web context
    final NiFiWebConfigurationContext nifiWebContext = (NiFiWebConfigurationContext) servletContext.getAttribute("nifi-web-configuration-context");
    // ensure the rule has been specified
    if (requestEntity == null || requestEntity.getRule() == null) {
        throw new WebApplicationException(badRequest("The rule must be specified."));
    }
    final RuleDTO ruleDto = requestEntity.getRule();
    // ensure the id has been specified
    if (ruleDto.getId() == null) {
        throw new WebApplicationException(badRequest("The rule id must be specified."));
    }
    if (!ruleDto.getId().equals(ruleId)) {
        throw new WebApplicationException(badRequest("The rule id in the path does not equal the rule id in the request body."));
    }
    // ensure the rule name was specified
    if (ruleDto.getName() == null || ruleDto.getName().isEmpty()) {
        throw new WebApplicationException(badRequest("The rule name must be specified and cannot be blank."));
    }
    // ensure there are some conditions
    if (ruleDto.getConditions() == null || ruleDto.getConditions().isEmpty()) {
        throw new WebApplicationException(badRequest("The rule conditions must be set."));
    }
    // ensure there are some actions
    if (ruleDto.getActions() == null || ruleDto.getActions().isEmpty()) {
        throw new WebApplicationException(badRequest("The rule actions must be set."));
    }
    // build the web context config
    final NiFiWebConfigurationRequestContext requestContext = getConfigurationRequestContext(requestEntity.getProcessorId(), requestEntity.getRevision(), requestEntity.getClientId());
    // load the criteria
    final UpdateAttributeModelFactory factory = new UpdateAttributeModelFactory();
    final Criteria criteria = getCriteria(nifiWebContext, requestContext);
    // attempt to locate the rule
    Rule rule = criteria.getRule(ruleId);
    // if the rule isn't found add it
    boolean newRule = false;
    if (rule == null) {
        newRule = true;
        rule = new Rule();
        rule.setId(ruleId);
    }
    try {
        // evaluate the conditions and actions before modifying the rule
        final Set<Condition> conditions = factory.createConditions(ruleDto.getConditions());
        final Set<Action> actions = factory.createActions(ruleDto.getActions());
        // update the rule
        rule.setName(ruleDto.getName());
        rule.setConditions(conditions);
        rule.setActions(actions);
    } catch (final IllegalArgumentException iae) {
        throw new WebApplicationException(iae, badRequest(iae.getMessage()));
    }
    // add the new rule if application
    if (newRule) {
        criteria.addRule(rule);
    }
    // save the criteria
    saveCriteria(requestContext, criteria);
    // create the response entity
    final RuleEntity responseEntity = new RuleEntity();
    responseEntity.setClientId(requestEntity.getClientId());
    responseEntity.setRevision(requestEntity.getRevision());
    responseEntity.setProcessorId(requestEntity.getProcessorId());
    responseEntity.setRule(DtoFactory.createRuleDTO(rule));
    // generate the response
    final ResponseBuilder response;
    if (newRule) {
        final UriBuilder uriBuilder = uriInfo.getAbsolutePathBuilder();
        response = Response.created(uriBuilder.path(ruleId).build()).entity(responseEntity);
    } else {
        response = Response.ok(responseEntity);
    }
    return noCache(response).build();
}

Example 5 with Rule

use of org.apache.nifi.update.attributes.Rule in project nifi by apache.

the class UpdateAttribute method evaluateCriteria.

// Evaluates the specified Criteria on the specified flowfile. Clones the
// specified flow file for each rule that is applied.
private boolean evaluateCriteria(final ProcessSession session, final ProcessContext context, final Criteria criteria, final FlowFile flowfile, final Map<FlowFile, List<Rule>> matchedRules, final Map<String, String> statefulAttributes) {
    final ComponentLog logger = getLogger();
    final List<Rule> rules = criteria.getRules();
    // consider each rule and hold a copy of the flowfile for each matched rule
    for (final Rule rule : rules) {
        // evaluate the rule
        if (evaluateRule(context, rule, flowfile, statefulAttributes)) {
            final FlowFile flowfileToUse;
            // determine if we should use the original flow file or clone
            if (FlowFilePolicy.USE_ORIGINAL.equals(criteria.getFlowFilePolicy()) || matchedRules.isEmpty()) {
                flowfileToUse = flowfile;
            } else {
                // clone the original for this rule
                flowfileToUse = session.clone(flowfile);
            }
            // store the flow file to use when executing this rule
            List<Rule> rulesForFlowFile = matchedRules.get(flowfileToUse);
            if (rulesForFlowFile == null) {
                rulesForFlowFile = new ArrayList<>();
                matchedRules.put(flowfileToUse, rulesForFlowFile);
            }
            rulesForFlowFile.add(rule);
            // log if appropriate
            if (debugEnabled) {
                logger.debug(this + " all conditions met for rule '" + rule.getName() + "'. Using flow file - " + flowfileToUse);
            }
        }
    }
    return !matchedRules.isEmpty();
}