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/**
* This file is part of Graylog.
*
* Graylog is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Graylog is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Graylog. If not, see .
*/
package org.graylog.plugins.pipelineprocessor.rest;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiParam;
import org.apache.shiro.authz.annotation.RequiresAuthentication;
import org.apache.shiro.authz.annotation.RequiresPermissions;
import org.graylog.plugins.pipelineprocessor.ast.Rule;
import org.graylog.plugins.pipelineprocessor.ast.functions.Function;
import org.graylog.plugins.pipelineprocessor.audit.PipelineProcessorAuditEventTypes;
import org.graylog.plugins.pipelineprocessor.db.RuleDao;
import org.graylog.plugins.pipelineprocessor.db.RuleMetricsConfigDto;
import org.graylog.plugins.pipelineprocessor.db.RuleMetricsConfigService;
import org.graylog.plugins.pipelineprocessor.db.RuleService;
import org.graylog.plugins.pipelineprocessor.parser.FunctionRegistry;
import org.graylog.plugins.pipelineprocessor.parser.ParseException;
import org.graylog.plugins.pipelineprocessor.parser.PipelineRuleParser;
import org.graylog2.audit.jersey.AuditEvent;
import org.graylog2.audit.jersey.NoAuditEvent;
import org.graylog2.database.NotFoundException;
import org.graylog2.plugin.rest.PluginRestResource;
import org.graylog2.shared.rest.resources.RestResource;
import org.joda.time.DateTime;
import org.joda.time.DateTimeZone;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.inject.Inject;
import javax.validation.constraints.NotNull;
import javax.ws.rs.BadRequestException;
import javax.ws.rs.Consumes;
import javax.ws.rs.DELETE;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.PUT;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import java.util.Collection;
import java.util.stream.Collectors;
@Api(value = "Pipelines/Rules", description = "Rules for the pipeline message processor")
@Path("/system/pipelines/rule")
@Consumes(MediaType.APPLICATION_JSON)
@Produces(MediaType.APPLICATION_JSON)
@RequiresAuthentication
public class RuleResource extends RestResource implements PluginRestResource {
private static final Logger log = LoggerFactory.getLogger(RuleResource.class);
private final RuleService ruleService;
private final RuleMetricsConfigService ruleMetricsConfigService;
private final PipelineRuleParser pipelineRuleParser;
private final FunctionRegistry functionRegistry;
@Inject
public RuleResource(RuleService ruleService,
RuleMetricsConfigService ruleMetricsConfigService,
PipelineRuleParser pipelineRuleParser,
FunctionRegistry functionRegistry) {
this.ruleService = ruleService;
this.ruleMetricsConfigService = ruleMetricsConfigService;
this.pipelineRuleParser = pipelineRuleParser;
this.functionRegistry = functionRegistry;
}
@ApiOperation(value = "Create a processing rule from source", notes = "")
@POST
@RequiresPermissions(PipelineRestPermissions.PIPELINE_RULE_CREATE)
@AuditEvent(type = PipelineProcessorAuditEventTypes.RULE_CREATE)
public RuleSource createFromParser(@ApiParam(name = "rule", required = true) @NotNull RuleSource ruleSource) throws ParseException {
final Rule rule;
try {
rule = pipelineRuleParser.parseRule(ruleSource.id(), ruleSource.source(), false);
} catch (ParseException e) {
throw new BadRequestException(Response.status(Response.Status.BAD_REQUEST).entity(e.getErrors()).build());
}
final DateTime now = DateTime.now(DateTimeZone.UTC);
final RuleDao newRuleSource = RuleDao.builder()
.title(rule.name()) // use the name from the parsed rule source.
.description(ruleSource.description())
.source(ruleSource.source())
.createdAt(now)
.modifiedAt(now)
.build();
final RuleDao save = ruleService.save(newRuleSource);
log.debug("Created new rule {}", save);
return RuleSource.fromDao(pipelineRuleParser, save);
}
@ApiOperation(value = "Parse a processing rule without saving it", notes = "")
@POST
@Path("/parse")
@NoAuditEvent("only used to parse a rule, no changes made in the system")
public RuleSource parse(@ApiParam(name = "rule", required = true) @NotNull RuleSource ruleSource) throws ParseException {
final Rule rule;
try {
// be silent about parse errors here, many requests will result in invalid syntax
rule = pipelineRuleParser.parseRule(ruleSource.id(), ruleSource.source(), true);
} catch (ParseException e) {
throw new BadRequestException(Response.status(Response.Status.BAD_REQUEST).entity(e.getErrors()).build());
}
final DateTime now = DateTime.now(DateTimeZone.UTC);
return RuleSource.builder()
.title(rule.name())
.description(ruleSource.description())
.source(ruleSource.source())
.createdAt(now)
.modifiedAt(now)
.build();
}
@ApiOperation(value = "Get all processing rules")
@GET
@RequiresPermissions(PipelineRestPermissions.PIPELINE_RULE_READ)
public Collection getAll() {
final Collection ruleDaos = ruleService.loadAll();
return ruleDaos.stream()
.map(ruleDao -> RuleSource.fromDao(pipelineRuleParser, ruleDao))
.collect(Collectors.toList());
}
@ApiOperation(value = "Get a processing rule", notes = "It can take up to a second until the change is applied")
@Path("/{id}")
@GET
public RuleSource get(@ApiParam(name = "id") @PathParam("id") String id) throws NotFoundException {
checkPermission(PipelineRestPermissions.PIPELINE_RULE_READ, id);
return RuleSource.fromDao(pipelineRuleParser, ruleService.load(id));
}
@ApiOperation("Retrieve the named processing rules in bulk")
@Path("/multiple")
@POST
@NoAuditEvent("only used to get multiple pipeline rules")
public Collection getBulk(@ApiParam("rules") BulkRuleRequest rules) {
Collection ruleDaos = ruleService.loadNamed(rules.rules());
return ruleDaos.stream()
.map(ruleDao -> RuleSource.fromDao(pipelineRuleParser, ruleDao))
.filter(rule -> isPermitted(PipelineRestPermissions.PIPELINE_RULE_READ, rule.id()))
.collect(Collectors.toList());
}
@ApiOperation(value = "Modify a processing rule", notes = "It can take up to a second until the change is applied")
@Path("/{id}")
@PUT
@AuditEvent(type = PipelineProcessorAuditEventTypes.RULE_UPDATE)
public RuleSource update(@ApiParam(name = "id") @PathParam("id") String id,
@ApiParam(name = "rule", required = true) @NotNull RuleSource update) throws NotFoundException {
checkPermission(PipelineRestPermissions.PIPELINE_RULE_EDIT, id);
final RuleDao ruleDao = ruleService.load(id);
final Rule rule;
try {
rule = pipelineRuleParser.parseRule(id, update.source(), false);
} catch (ParseException e) {
throw new BadRequestException(Response.status(Response.Status.BAD_REQUEST).entity(e.getErrors()).build());
}
final RuleDao toSave = ruleDao.toBuilder()
.title(rule.name())
.description(update.description())
.source(update.source())
.modifiedAt(DateTime.now(DateTimeZone.UTC))
.build();
final RuleDao savedRule = ruleService.save(toSave);
return RuleSource.fromDao(pipelineRuleParser, savedRule);
}
@ApiOperation(value = "Delete a processing rule", notes = "It can take up to a second until the change is applied")
@Path("/{id}")
@DELETE
@AuditEvent(type = PipelineProcessorAuditEventTypes.RULE_DELETE)
public void delete(@ApiParam(name = "id") @PathParam("id") String id) throws NotFoundException {
checkPermission(PipelineRestPermissions.PIPELINE_RULE_DELETE, id);
ruleService.load(id);
ruleService.delete(id);
}
@ApiOperation("Get function descriptors")
@Path("/functions")
@GET
public Collection
