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http.cpp
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// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you 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.
#include <list>
#include <memory>
#include <sstream>
#include <string>
#include <tuple>
#include <vector>
#include <mesos/attributes.hpp>
#include <mesos/type_utils.hpp>
#include <mesos/agent/agent.hpp>
#include <mesos/authorizer/authorizer.hpp>
#include <mesos/executor/executor.hpp>
#include <mesos/v1/agent/agent.hpp>
#include <mesos/v1/executor/executor.hpp>
#include <process/collect.hpp>
#include <process/help.hpp>
#include <process/http.hpp>
#include <process/logging.hpp>
#include <process/limiter.hpp>
#include <process/owned.hpp>
#include <process/metrics/metrics.hpp>
#include <stout/foreach.hpp>
#include <stout/json.hpp>
#include <stout/jsonify.hpp>
#include <stout/lambda.hpp>
#include <stout/net.hpp>
#include <stout/numify.hpp>
#include <stout/stringify.hpp>
#include <stout/strings.hpp>
#include "common/build.hpp"
#include "common/http.hpp"
#include "internal/devolve.hpp"
#include "mesos/mesos.hpp"
#include "mesos/resources.hpp"
#include "slave/slave.hpp"
#include "slave/validation.hpp"
#include "version/version.hpp"
using process::AUTHENTICATION;
using process::AUTHORIZATION;
using process::Clock;
using process::DESCRIPTION;
using process::Future;
using process::HELP;
using process::Logging;
using process::Owned;
using process::TLDR;
using process::http::Accepted;
using process::http::BadRequest;
using process::http::Forbidden;
using process::http::InternalServerError;
using process::http::MethodNotAllowed;
using process::http::NotAcceptable;
using process::http::NotImplemented;
using process::http::OK;
using process::http::Pipe;
using process::http::ServiceUnavailable;
using process::http::UnsupportedMediaType;
using process::metrics::internal::MetricsProcess;
using std::list;
using std::string;
using std::tie;
using std::tuple;
using std::vector;
namespace mesos {
static void json(JSON::ObjectWriter* writer, const TaskInfo& task)
{
writer->field("id", task.task_id().value());
writer->field("name", task.name());
writer->field("slave_id", task.slave_id().value());
writer->field("resources", Resources(task.resources()));
if (task.has_command()) {
writer->field("command", task.command());
}
if (task.has_executor()) {
writer->field("executor_id", task.executor().executor_id().value());
}
if (task.has_discovery()) {
writer->field("discovery", JSON::Protobuf(task.discovery()));
}
}
namespace internal {
namespace slave {
// Pull in the process definitions.
using process::http::Response;
using process::http::Request;
// Filtered representation of an Executor. Tasks within this executor
// are filtered based on whether the user is authorized to view them.
struct ExecutorWriter
{
ExecutorWriter(
const Owned<ObjectApprover>& taskApprover,
const Executor* executor,
const Framework* framework)
: taskApprover_(taskApprover),
executor_(executor),
framework_(framework) {}
void operator()(JSON::ObjectWriter* writer) const
{
writer->field("id", executor_->id.value());
writer->field("name", executor_->info.name());
writer->field("source", executor_->info.source());
writer->field("container", executor_->containerId.value());
writer->field("directory", executor_->directory);
writer->field("resources", executor_->resources);
if (executor_->info.has_labels()) {
writer->field("labels", executor_->info.labels());
}
writer->field("tasks", [this](JSON::ArrayWriter* writer) {
foreach (Task* task, executor_->launchedTasks.values()) {
if (!approveViewTask(taskApprover_, *task, framework_->info)) {
continue;
}
writer->element(*task);
}
});
writer->field("queued_tasks", [this](JSON::ArrayWriter* writer) {
foreach (const TaskInfo& task, executor_->queuedTasks.values()) {
if (!approveViewTaskInfo(taskApprover_, task, framework_->info)) {
continue;
}
writer->element(task);
}
});
writer->field("completed_tasks", [this](JSON::ArrayWriter* writer) {
foreach (const std::shared_ptr<Task>& task, executor_->completedTasks) {
if (!approveViewTask(taskApprover_, *task, framework_->info)) {
continue;
}
writer->element(*task);
}
// NOTE: We add 'terminatedTasks' to 'completed_tasks' for
// simplicity.
// TODO(vinod): Use foreachvalue instead once LinkedHashmap
// supports it.
foreach (Task* task, executor_->terminatedTasks.values()) {
if (!approveViewTask(taskApprover_, *task, framework_->info)) {
continue;
}
writer->element(*task);
}
});
}
const Owned<ObjectApprover>& taskApprover_;
const Executor* executor_;
const Framework* framework_;
};
// Filtered representation of FrameworkInfo.
// Executors and Tasks are filtered based on whether the
// user is authorized to view them.
struct FrameworkWriter
{
FrameworkWriter(
const Owned<ObjectApprover>& taskApprover,
const Owned<ObjectApprover>& executorApprover,
const Framework* framework)
: taskApprover_(taskApprover),
executorApprover_(executorApprover),
framework_(framework) {}
void operator()(JSON::ObjectWriter* writer) const
{
writer->field("id", framework_->id().value());
writer->field("name", framework_->info.name());
writer->field("user", framework_->info.user());
writer->field("failover_timeout", framework_->info.failover_timeout());
writer->field("checkpoint", framework_->info.checkpoint());
writer->field("role", framework_->info.role());
writer->field("hostname", framework_->info.hostname());
writer->field("executors", [this](JSON::ArrayWriter* writer) {
foreachvalue (Executor* executor, framework_->executors) {
if (!approveViewExecutorInfo(
executorApprover_, executor->info, framework_->info)) {
continue;
}
ExecutorWriter executorWriter(
taskApprover_,
executor,
framework_);
writer->element(executorWriter);
}
});
writer->field(
"completed_executors", [this](JSON::ArrayWriter* writer) {
foreach (
const Owned<Executor>& executor, framework_->completedExecutors) {
if (!approveViewExecutorInfo(
executorApprover_, executor->info, framework_->info)) {
continue;
}
ExecutorWriter executorWriter(
taskApprover_,
executor.get(),
framework_);
writer->element(executorWriter);
}
});
}
const Owned<ObjectApprover>& taskApprover_;
const Owned<ObjectApprover>& executorApprover_;
const Framework* framework_;
};
void Slave::Http::log(const Request& request)
{
Option<string> userAgent = request.headers.get("User-Agent");
Option<string> forwardedFor = request.headers.get("X-Forwarded-For");
LOG(INFO) << "HTTP " << request.method << " for " << request.url.path
<< " from " << request.client
<< (userAgent.isSome()
? " with User-Agent='" + userAgent.get() + "'"
: "")
<< (forwardedFor.isSome()
? " with X-Forwarded-For='" + forwardedFor.get() + "'"
: "");
}
string Slave::Http::API_HELP()
{
return HELP(
TLDR(
"Endpoint for API calls against the agent."),
DESCRIPTION(
"Returns 200 OK if the call is successful"),
AUTHENTICATION(true));
}
Future<Response> Slave::Http::api(
const Request& request,
const Option<string>& principal) const
{
// TODO(anand): Add metrics for rejected requests.
if (slave->state == Slave::RECOVERING) {
return ServiceUnavailable("Agent has not finished recovery");
}
if (request.method != "POST") {
return MethodNotAllowed({"POST"}, request.method);
}
v1::agent::Call v1Call;
Option<string> contentType = request.headers.get("Content-Type");
if (contentType.isNone()) {
return BadRequest("Expecting 'Content-Type' to be present");
}
if (contentType.get() == APPLICATION_PROTOBUF) {
if (!v1Call.ParseFromString(request.body)) {
return BadRequest("Failed to parse body into Call protobuf");
}
} else if (contentType.get() == APPLICATION_JSON) {
Try<JSON::Value> value = JSON::parse(request.body);
if (value.isError()) {
return BadRequest("Failed to parse body into JSON: " + value.error());
}
Try<v1::agent::Call> parse =
::protobuf::parse<v1::agent::Call>(value.get());
if (parse.isError()) {
return BadRequest("Failed to convert JSON into Call protobuf: " +
parse.error());
}
v1Call = parse.get();
} else {
return UnsupportedMediaType(
string("Expecting 'Content-Type' of ") +
APPLICATION_JSON + " or " + APPLICATION_PROTOBUF);
}
agent::Call call = devolve(v1Call);
Option<Error> error = validation::agent::call::validate(call);
if (error.isSome()) {
return BadRequest("Failed to validate agent::Call: " + error.get().message);
}
LOG(INFO) << "Processing call " << call.type();
ContentType acceptType;
if (request.acceptsMediaType(APPLICATION_JSON)) {
acceptType = ContentType::JSON;
} else if (request.acceptsMediaType(APPLICATION_PROTOBUF)) {
acceptType = ContentType::PROTOBUF;
} else {
return NotAcceptable(
string("Expecting 'Accept' to allow ") +
"'" + APPLICATION_PROTOBUF + "' or '" + APPLICATION_JSON + "'");
}
switch (call.type()) {
case agent::Call::UNKNOWN:
return NotImplemented();
case agent::Call::GET_HEALTH:
return getHealth(call, principal, acceptType);
case agent::Call::GET_FLAGS:
return getFlags(call, principal, acceptType);
case agent::Call::GET_VERSION:
return getVersion(call, principal, acceptType);
case agent::Call::GET_METRICS:
return getMetrics(call, principal, acceptType);
case agent::Call::GET_LOGGING_LEVEL:
return getLoggingLevel(call, principal, acceptType);
case agent::Call::SET_LOGGING_LEVEL:
return setLoggingLevel(call, principal, acceptType);
case agent::Call::LIST_FILES:
return NotImplemented();
case agent::Call::READ_FILE:
return NotImplemented();
case agent::Call::GET_STATE:
return NotImplemented();
case agent::Call::GET_CONTAINERS:
return getContainers(call, principal, acceptType);
}
UNREACHABLE();
}
string Slave::Http::EXECUTOR_HELP() {
return HELP(
TLDR(
"Endpoint for the Executor HTTP API."),
DESCRIPTION(
"This endpoint is used by the executors to interact with the",
"agent via Call/Event messages.",
"Returns 200 OK iff the initial SUBSCRIBE Call is successful.",
"This would result in a streaming response via chunked",
"transfer encoding. The executors can process the response",
"incrementally.",
"Returns 202 Accepted for all other Call messages iff the",
"request is accepted."),
AUTHENTICATION(false));
}
Future<Response> Slave::Http::executor(const Request& request) const
{
// TODO(anand): Add metrics for rejected requests.
if (request.method != "POST") {
return MethodNotAllowed({"POST"}, request.method);
}
v1::executor::Call v1Call;
Option<string> contentType = request.headers.get("Content-Type");
if (contentType.isNone()) {
return BadRequest("Expecting 'Content-Type' to be present");
}
if (contentType.get() == APPLICATION_PROTOBUF) {
if (!v1Call.ParseFromString(request.body)) {
return BadRequest("Failed to parse body into Call protobuf");
}
} else if (contentType.get() == APPLICATION_JSON) {
Try<JSON::Value> value = JSON::parse(request.body);
if (value.isError()) {
return BadRequest("Failed to parse body into JSON: " + value.error());
}
Try<v1::executor::Call> parse =
::protobuf::parse<v1::executor::Call>(value.get());
if (parse.isError()) {
return BadRequest("Failed to convert JSON into Call protobuf: " +
parse.error());
}
v1Call = parse.get();
} else {
return UnsupportedMediaType(
string("Expecting 'Content-Type' of ") +
APPLICATION_JSON + " or " + APPLICATION_PROTOBUF);
}
const executor::Call call = devolve(v1Call);
Option<Error> error = validation::executor::call::validate(call);
if (error.isSome()) {
return BadRequest("Failed to validate Executor::Call: " +
error.get().message);
}
ContentType acceptType;
if (call.type() == executor::Call::SUBSCRIBE) {
// We default to JSON since an empty 'Accept' header
// results in all media types considered acceptable.
if (request.acceptsMediaType(APPLICATION_JSON)) {
acceptType = ContentType::JSON;
} else if (request.acceptsMediaType(APPLICATION_PROTOBUF)) {
acceptType = ContentType::PROTOBUF;
} else {
return NotAcceptable(
string("Expecting 'Accept' to allow ") +
"'" + APPLICATION_PROTOBUF + "' or '" + APPLICATION_JSON + "'");
}
} else {
if (slave->state == Slave::RECOVERING) {
return ServiceUnavailable("Agent has not finished recovery");
}
}
// We consolidate the framework/executor lookup logic here because
// it is common for all the call handlers.
Framework* framework = slave->getFramework(call.framework_id());
if (framework == nullptr) {
return BadRequest("Framework cannot be found");
}
Executor* executor = framework->getExecutor(call.executor_id());
if (executor == nullptr) {
return BadRequest("Executor cannot be found");
}
if (executor->state == Executor::REGISTERING &&
call.type() != executor::Call::SUBSCRIBE) {
return Forbidden("Executor is not subscribed");
}
switch (call.type()) {
case executor::Call::SUBSCRIBE: {
Pipe pipe;
OK ok;
ok.headers["Content-Type"] = stringify(acceptType);
ok.type = Response::PIPE;
ok.reader = pipe.reader();
HttpConnection http {pipe.writer(), acceptType};
slave->subscribe(http, call.subscribe(), framework, executor);
return ok;
}
case executor::Call::UPDATE: {
slave->statusUpdate(protobuf::createStatusUpdate(
call.framework_id(),
call.update().status(),
slave->info.id()),
None());
return Accepted();
}
case executor::Call::MESSAGE: {
slave->executorMessage(
slave->info.id(),
framework->id(),
executor->id,
call.message().data());
return Accepted();
}
case executor::Call::UNKNOWN: {
LOG(WARNING) << "Received 'UNKNOWN' call";
return NotImplemented();
}
}
UNREACHABLE();
}
string Slave::Http::FLAGS_HELP()
{
return HELP(
TLDR("Exposes the agent's flag configuration."),
None(),
AUTHENTICATION(true),
AUTHORIZATION(
"The request principal should be authorized to view all flags.",
"See the authorization documentation for details."));
}
Future<Response> Slave::Http::flags(
const Request& request,
const Option<string>& principal) const
{
// TODO(nfnt): Remove check for enabled
// authorization as part of MESOS-5346.
if (request.method != "GET" && slave->authorizer.isSome()) {
return MethodNotAllowed({"GET"}, request.method);
}
if (slave->authorizer.isNone()) {
return OK(_flags(), request.url.query.get("jsonp"));
}
authorization::Request authRequest;
authRequest.set_action(authorization::VIEW_FLAGS);
if (principal.isSome()) {
authRequest.mutable_subject()->set_value(principal.get());
}
return slave->authorizer.get()->authorized(authRequest)
.then(defer(
slave->self(),
[this, request](bool authorized) -> Future<Response> {
if (authorized) {
return OK(_flags(), request.url.query.get("jsonp"));
} else {
return Forbidden();
}
}));
}
JSON::Object Slave::Http::_flags() const
{
JSON::Object object;
{
JSON::Object flags;
foreachvalue (const flags::Flag& flag, slave->flags) {
Option<string> value = flag.stringify(slave->flags);
if (value.isSome()) {
flags.values[flag.effective_name().value] = value.get();
}
}
object.values["flags"] = std::move(flags);
}
return object;
}
Future<Response> Slave::Http::getFlags(
const agent::Call& call,
const Option<string>& principal,
ContentType contentType) const
{
CHECK_EQ(agent::Call::GET_FLAGS, call.type());
return OK(serialize(contentType,
evolve<v1::agent::Response::GET_FLAGS>(_flags())),
stringify(contentType));
}
string Slave::Http::HEALTH_HELP()
{
return HELP(
TLDR(
"Health check of the Agent."),
DESCRIPTION(
"Returns 200 OK iff the Agent is healthy.",
"Delayed responses are also indicative of poor health."),
AUTHENTICATION(false));
}
Future<Response> Slave::Http::health(const Request& request) const
{
return OK();
}
Future<Response> Slave::Http::getHealth(
const agent::Call& call,
const Option<string>& principal,
ContentType contentType) const
{
CHECK_EQ(agent::Call::GET_HEALTH, call.type());
agent::Response response;
response.set_type(agent::Response::GET_HEALTH);
response.mutable_get_health()->set_healthy(true);
return OK(serialize(contentType, evolve(response)),
stringify(contentType));
}
Future<Response> Slave::Http::getVersion(
const agent::Call& call,
const Option<string>& principal,
ContentType contentType) const
{
CHECK_EQ(agent::Call::GET_VERSION, call.type());
return OK(serialize(contentType,
evolve<v1::agent::Response::GET_VERSION>(version())),
stringify(contentType));
}
Future<Response> Slave::Http::getMetrics(
const agent::Call& call,
const Option<string>& principal,
ContentType contentType) const
{
CHECK_EQ(agent::Call::GET_METRICS, call.type());
CHECK(call.has_get_metrics());
Option<Duration> timeout;
if (call.get_metrics().has_timeout()) {
timeout = Nanoseconds(call.get_metrics().timeout().nanoseconds());
}
return process::metrics::snapshot(timeout)
.then([contentType](const hashmap<string, double>& metrics) -> Response {
agent::Response response;
response.set_type(agent::Response::GET_METRICS);
agent::Response::GetMetrics* _getMetrics =
response.mutable_get_metrics();
foreachpair (const string& key, double value, metrics) {
Metric* metric = _getMetrics->add_metrics();
metric->set_name(key);
metric->set_value(value);
}
return OK(serialize(contentType, evolve(response)),
stringify(contentType));
});
}
Future<Response> Slave::Http::getLoggingLevel(
const agent::Call& call,
const Option<string>& principal,
ContentType contentType) const
{
CHECK_EQ(agent::Call::GET_LOGGING_LEVEL, call.type());
agent::Response response;
response.set_type(agent::Response::GET_LOGGING_LEVEL);
response.mutable_get_logging_level()->set_level(FLAGS_v);
return OK(serialize(contentType, evolve(response)),
stringify(contentType));
}
Future<Response> Slave::Http::setLoggingLevel(
const agent::Call& call,
const Option<string>& principal,
ContentType /*contentType*/) const
{
CHECK_EQ(agent::Call::SET_LOGGING_LEVEL, call.type());
CHECK(call.has_set_logging_level());
uint32_t level = call.set_logging_level().level();
Duration duration =
Nanoseconds(call.set_logging_level().duration().nanoseconds());
return dispatch(process::logging(), &Logging::set_level, level, duration)
.then([]() -> Response {
return OK();
});
}
string Slave::Http::STATE_HELP() {
return HELP(
TLDR(
"Information about state of the Agent."),
DESCRIPTION(
"This endpoint shows information about the frameworks, executors",
"and the agent's master as a JSON object.",
"The information shown might be filtered based on the user",
"accessing the endpoint.",
"",
"Example (**Note**: this is not exhaustive):",
"",
"```",
"{",
" \"version\" : \"0.28.0\",",
" \"git_sha\" : \"9d5889b5a265849886a533965f4aefefd1fbd103\",",
" \"git_branch\" : \"refs/heads/master\",",
" \"git_tag\" : \"0.28.0\",",
" \"build_date\" : \"2016-02-15 10:00:28\"",
" \"build_time\" : 1455559228,",
" \"build_user\" : \"mesos-user\",",
" \"start_time\" : 1455647422.88396,",
" \"id\" : \"e2c38084-f6ea-496f-bce3-b6e07cea5e01-S0\",",
" \"pid\" : \"slave(1)@127.0.1.1:5051\",",
" \"hostname\" : \"localhost\",",
" \"resources\" : {",
" \"ports\" : \"[31000-32000]\",",
" \"mem\" : 127816,",
" \"disk\" : 804211,",
" \"cpus\" : 32",
" },",
" \"attributes\" : {},",
" \"master_hostname\" : \"localhost\",",
" \"log_dir\" : \"/var/log\",",
" \"external_log_file\" : \"mesos.log\",",
" \"frameworks\" : [],",
" \"completed_frameworks\" : [],",
" \"flags\" : {",
" \"gc_disk_headroom\" : \"0.1\",",
" \"isolation\" : \"posix/cpu,posix/mem\",",
" \"containerizers\" : \"mesos\",",
" \"docker_socket\" : \"/var/run/docker.sock\",",
" \"gc_delay\" : \"1weeks\",",
" \"docker_remove_delay\" : \"6hrs\",",
" \"port\" : \"5051\",",
" \"systemd_runtime_directory\" : \"/run/systemd/system\",",
" \"initialize_driver_logging\" : \"true\",",
" \"cgroups_root\" : \"mesos\",",
" \"fetcher_cache_size\" : \"2GB\",",
" \"cgroups_hierarchy\" : \"/sys/fs/cgroup\",",
" \"qos_correction_interval_min\" : \"0ns\",",
" \"cgroups_cpu_enable_pids_and_tids_count\" : \"false\",",
" \"sandbox_directory\" : \"/mnt/mesos/sandbox\",",
" \"docker\" : \"docker\",",
" \"help\" : \"false\",",
" \"docker_stop_timeout\" : \"0ns\",",
" \"master\" : \"127.0.0.1:5050\",",
" \"logbufsecs\" : \"0\",",
" \"docker_registry\" : \"https://registry-1.docker.io\",",
" \"frameworks_home\" : \"\",",
" \"cgroups_enable_cfs\" : \"false\",",
" \"perf_interval\" : \"1mins\",",
" \"docker_kill_orphans\" : \"true\",",
" \"switch_user\" : \"true\",",
" \"logging_level\" : \"INFO\",",
" \"hadoop_home\" : \"\",",
" \"strict\" : \"true\",",
" \"executor_registration_timeout\" : \"1mins\",",
" \"recovery_timeout\" : \"15mins\",",
" \"revocable_cpu_low_priority\" : \"true\",",
" \"docker_store_dir\" : \"/tmp/mesos/store/docker\",",
" \"image_provisioner_backend\" : \"copy\",",
" \"authenticatee\" : \"crammd5\",",
" \"quiet\" : \"false\",",
" \"executor_shutdown_grace_period\" : \"5secs\",",
" \"fetcher_cache_dir\" : \"/tmp/mesos/fetch\",",
" \"default_role\" : \"*\",",
" \"work_dir\" : \"/tmp/mesos\",",
" \"launcher_dir\" : \"/path/to/mesos/build/src\",",
" \"registration_backoff_factor\" : \"1secs\",",
" \"oversubscribed_resources_interval\" : \"15secs\",",
" \"enforce_container_disk_quota\" : \"false\",",
" \"container_disk_watch_interval\" : \"15secs\",",
" \"disk_watch_interval\" : \"1mins\",",
" \"cgroups_limit_swap\" : \"false\",",
" \"hostname_lookup\" : \"true\",",
" \"perf_duration\" : \"10secs\",",
" \"appc_store_dir\" : \"/tmp/mesos/store/appc\",",
" \"recover\" : \"reconnect\",",
" \"version\" : \"false\"",
" },",
"}",
"```"),
AUTHENTICATION(true),
AUTHORIZATION(
"This endpoint might be filtered based on the user accessing it.",
"For example a user might only see the subset of frameworks,",
"tasks, and executors they are allowed to view.",
"See the authorization documentation for details."));
}
Future<Response> Slave::Http::state(
const Request& request,
const Option<string>& principal) const
{
if (slave->state == Slave::RECOVERING) {
return ServiceUnavailable("Agent has not finished recovery");
}
// Retrieve `ObjectApprover`s for authorizing frameworks and tasks.
Future<Owned<ObjectApprover>> frameworksApprover;
Future<Owned<ObjectApprover>> tasksApprover;
Future<Owned<ObjectApprover>> executorsApprover;
Future<Owned<ObjectApprover>> flagsApprover;
if (slave->authorizer.isSome()) {
authorization::Subject subject;
if (principal.isSome()) {
subject.set_value(principal.get());
}
frameworksApprover = slave->authorizer.get()->getObjectApprover(
subject, authorization::VIEW_FRAMEWORK);
tasksApprover = slave->authorizer.get()->getObjectApprover(
subject, authorization::VIEW_TASK);
executorsApprover = slave->authorizer.get()->getObjectApprover(
subject, authorization::VIEW_EXECUTOR);
flagsApprover = slave->authorizer.get()->getObjectApprover(
subject, authorization::VIEW_FLAGS);
} else {
frameworksApprover = Owned<ObjectApprover>(new AcceptingObjectApprover());
tasksApprover = Owned<ObjectApprover>(new AcceptingObjectApprover());
executorsApprover = Owned<ObjectApprover>(new AcceptingObjectApprover());
flagsApprover = Owned<ObjectApprover>(new AcceptingObjectApprover());
}
return collect(
frameworksApprover,
tasksApprover,
executorsApprover,
flagsApprover)
.then(defer(slave->self(),
[this, request](const tuple<Owned<ObjectApprover>,
Owned<ObjectApprover>,
Owned<ObjectApprover>,
Owned<ObjectApprover>>& approvers) -> Response {
// This lambda is consumed before the outer lambda
// returns, hence capture by reference is fine here.
auto state = [this, &approvers](JSON::ObjectWriter* writer) {
// Get approver from tuple.
Owned<ObjectApprover> frameworksApprover;
Owned<ObjectApprover> tasksApprover;
Owned<ObjectApprover> executorsApprover;
Owned<ObjectApprover> flagsApprover;
tie(frameworksApprover,
tasksApprover,
executorsApprover,
flagsApprover) = approvers;
writer->field("version", MESOS_VERSION);
if (build::GIT_SHA.isSome()) {
writer->field("git_sha", build::GIT_SHA.get());
}
if (build::GIT_BRANCH.isSome()) {
writer->field("git_branch", build::GIT_BRANCH.get());
}
if (build::GIT_TAG.isSome()) {
writer->field("git_tag", build::GIT_TAG.get());
}
writer->field("build_date", build::DATE);
writer->field("build_time", build::TIME);
writer->field("build_user", build::USER);
writer->field("start_time", slave->startTime.secs());
writer->field("id", slave->info.id().value());
writer->field("pid", string(slave->self()));
writer->field("hostname", slave->info.hostname());
writer->field("resources", Resources(slave->info.resources()));
writer->field("attributes", Attributes(slave->info.attributes()));
if (slave->master.isSome()) {
Try<string> hostname =
net::getHostname(slave->master.get().address.ip);
if (hostname.isSome()) {
writer->field("master_hostname", hostname.get());
}
}
if (approveViewFlags(flagsApprover)) {
if (slave->flags.log_dir.isSome()) {
writer->field("log_dir", slave->flags.log_dir.get());
}
if (slave->flags.external_log_file.isSome()) {
writer->field(
"external_log_file", slave->flags.external_log_file.get());
}
writer->field("flags", [this](JSON::ObjectWriter* writer) {
foreachvalue (const flags::Flag& flag, slave->flags) {
Option<string> value = flag.stringify(slave->flags);
if (value.isSome()) {
writer->field(flag.effective_name().value, value.get());
}
}
});
}
// Model all of the frameworks.
writer->field(
"frameworks",
[this, &frameworksApprover, &executorsApprover, &tasksApprover](
JSON::ArrayWriter* writer) {
foreachvalue (Framework* framework, slave->frameworks) {
// Skip unauthorized frameworks.
if (!approveViewFrameworkInfo(
frameworksApprover, framework->info)) {
continue;
}
FrameworkWriter frameworkWriter(
tasksApprover,
executorsApprover,
framework);
writer->element(frameworkWriter);
}
});
// Model all of the completed frameworks.
writer->field(
"completed_frameworks",
[this, &frameworksApprover, &executorsApprover, &tasksApprover](
JSON::ArrayWriter* writer) {
foreach (const Owned<Framework>& framework,
slave->completedFrameworks) {
// Skip unauthorized frameworks.
if (!approveViewFrameworkInfo(
frameworksApprover, framework->info)) {
continue;
}
FrameworkWriter frameworkWriter(
tasksApprover,
executorsApprover,
framework.get());
writer->element(frameworkWriter);
}
});
};
return OK(jsonify(state), request.url.query.get("jsonp"));
}));