/**
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.airlift.airship.agent;
import com.google.common.base.Preconditions;
import com.google.common.collect.Lists;
import com.google.inject.Inject;
import io.airlift.airship.shared.InstallationRepresentation;
import io.airlift.airship.shared.SlotStatus;
import io.airlift.airship.shared.SlotStatusRepresentation;
import javax.ws.rs.Consumes;
import javax.ws.rs.DELETE;
import javax.ws.rs.GET;
import javax.ws.rs.HeaderParam;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.UriInfo;
import java.net.URI;
import java.util.List;
import java.util.UUID;
import static io.airlift.airship.shared.HttpUriBuilder.uriBuilderFrom;
import static io.airlift.airship.shared.VersionsUtil.AIRSHIP_AGENT_VERSION_HEADER;
import static io.airlift.airship.shared.VersionsUtil.AIRSHIP_SLOT_VERSION_HEADER;
import static io.airlift.airship.shared.VersionsUtil.checkAgentVersion;
import static io.airlift.airship.shared.VersionsUtil.checkSlotVersion;
@Path("/v1/agent/slot")
public class SlotResource
{
private final Agent agent;
@Inject
public SlotResource(Agent agent)
{
Preconditions.checkNotNull(agent, "agent is null");
this.agent = agent;
}
@POST
@Consumes(MediaType.APPLICATION_JSON)
@Produces(MediaType.APPLICATION_JSON)
public Response installSlot(@HeaderParam(AIRSHIP_AGENT_VERSION_HEADER) String agentVersion, InstallationRepresentation installation, @Context UriInfo uriInfo)
{
Preconditions.checkNotNull(installation, "installation must not be null");
checkAgentVersion(agent.getAgentStatus(), agentVersion);
SlotStatus slotStatus = agent.install(installation.toInstallation());
return Response
.created(getSelfUri(slotStatus.getId(), uriInfo.getBaseUri()))
.entity(SlotStatusRepresentation.from(slotStatus))
.header(AIRSHIP_AGENT_VERSION_HEADER, agent.getAgentStatus().getVersion())
.header(AIRSHIP_SLOT_VERSION_HEADER, slotStatus.getVersion())
.build();
}
@Path("{slotId}")
@DELETE
public Response terminateSlot(@HeaderParam(AIRSHIP_AGENT_VERSION_HEADER) String agentVersion,
@HeaderParam(AIRSHIP_SLOT_VERSION_HEADER) String slotVersion,
@PathParam("slotId") UUID slotId)
{
Preconditions.checkNotNull(slotId, "slotId must not be null");
Slot slot = agent.getSlot(slotId);
if (slot == null) {
return Response.status(Response.Status.NOT_FOUND).build();
}
checkAgentVersion(agent.getAgentStatus(), agentVersion);
checkSlotVersion(slot.status(), slotVersion);
SlotStatus slotStatus = agent.terminateSlot(slotId);
if (slotStatus == null) {
return Response.status(Response.Status.NOT_FOUND).build();
}
return Response.ok(SlotStatusRepresentation.from(slotStatus))
.header(AIRSHIP_AGENT_VERSION_HEADER, agent.getAgentStatus().getVersion())
.header(AIRSHIP_SLOT_VERSION_HEADER, slotStatus.getVersion())
.build();
}
@Path("{slotId}")
@GET
@Produces(MediaType.APPLICATION_JSON)
public Response getSlotStatus(@PathParam("slotId") UUID slotId, @Context UriInfo uriInfo)
{
Preconditions.checkNotNull(slotId, "slotId must not be null");
Slot slot = agent.getSlot(slotId);
if (slot == null) {
return Response.status(Response.Status.NOT_FOUND).build();
}
SlotStatus slotStatus = slot.status();
return Response.ok(SlotStatusRepresentation.from(slotStatus))
.header(AIRSHIP_AGENT_VERSION_HEADER, agent.getAgentStatus().getVersion())
.header(AIRSHIP_SLOT_VERSION_HEADER, slotStatus.getVersion())
.build();
}
@GET
@Produces(MediaType.APPLICATION_JSON)
public Response getAllSlotsStatus(@Context UriInfo uriInfo)
{
List<SlotStatusRepresentation> representations = Lists.newArrayList();
for (Slot slot : agent.getAllSlots()) {
SlotStatus slotStatus = slot.status();
representations.add(SlotStatusRepresentation.from(slotStatus));
}
return Response.ok(representations)
.header(AIRSHIP_AGENT_VERSION_HEADER, agent.getAgentStatus().getVersion())
.build();
}
private static URI getSelfUri(UUID slotId, URI baseUri)
{
return uriBuilderFrom(baseUri).appendPath("/v1/agent/slot/").appendPath(slotId.toString()).build();
}
}