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arangodb
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we can shrink cluster

This commit is contained in:
Kaveh Vahedipour 2016-06-10 18:20:37 +02:00
parent 6d41a5e580
commit 2e866c4067
1 changed files with 39 additions and 2 deletions
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41
arangod/Agency/CleanOutServer.cpp
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@ -125,8 +125,35 @@ JOB_STATUS CleanOutServer::status () {
}
bool CleanOutServer::create () {
bool CleanOutServer::create () { // Only through shrink cluster
LOG_TOPIC(INFO, Logger::AGENCY)
<< "Todo: Clean out server " + _server + " for shrinkage";
std::string path = _agencyPrefix + toDoPrefix + _jobId;
_jb = std::make_shared<Builder>();
_jb->openArray();
_jb->openObject();
_jb->add(path, VPackValue(VPackValueType::Object));
_jb->add("type", VPackValue("cleanOutServer"));
_jb->add("server", VPackValue(_server));
_jb->add("jobId", VPackValue(_jobId));
_jb->add("creator", VPackValue(_creator));
_jb->add("timeCreated",
VPackValue(timepointToString(std::chrono::system_clock::now())));
_jb->close(); _jb->close(); _jb->close();
write_ret_t res = transact(_agent, *_jb);
if (res.accepted && res.indices.size()==1 && res.indices[0]) {
return true;
}
LOG_TOPIC(INFO, Logger::AGENCY) << "Failed to insert job " + _jobId;
return false;
}
bool CleanOutServer::start() {
@ -136,7 +163,17 @@ bool CleanOutServer::start() {
// Get todo entry
todo.openArray();
_snapshot(toDoPrefix + _jobId).toBuilder(todo);
if (_jb == nullptr) {
try {
_snapshot(toDoPrefix + _jobId).toBuilder(todo);
} catch (std::exception const&) {
LOG_TOPIC(INFO, Logger::AGENCY) <<
"Failed to get key " + toDoPrefix + _jobId + " from agency snapshot";
return false;
}
} else {
todo.add(_jb->slice()[0].valueAt(0));
}
todo.close();
// Enter pending, remove todo, block toserver