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db: tablets: Add printers

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Example:

TRACE 2023-03-30 12:06:33,918 [shard 0] tablets - Read tablet metadata: {
  8cd5b560-cee2-11ed-9cd5-7f37187f2167: {
    [0]: last_token=-6917529027641081857, replicas={4fe5c4d5-7030-4ddd-8117-ba22c29f4f57:0},
    [1]: last_token=-4611686018427387905, replicas={3160b965-1925-4677-884b-c761e2bf4272:0},
    [2]: last_token=-2305843009213693953, replicas={3160b965-1925-4677-884b-c761e2bf4272:0},
    [3]: last_token=-1, replicas={4fe5c4d5-7030-4ddd-8117-ba22c29f4f57:0},
    [4]: last_token=2305843009213693951, replicas={3160b965-1925-4677-884b-c761e2bf4272:0},
    [5]: last_token=4611686018427387903, replicas={4fe5c4d5-7030-4ddd-8117-ba22c29f4f57:0},
    [6]: last_token=6917529027641081855, replicas={4fe5c4d5-7030-4ddd-8117-ba22c29f4f57:0},
    [7]: last_token=9223372036854775807, replicas={3160b965-1925-4677-884b-c761e2bf4272:0}
  }
}
This commit is contained in:
Tomasz Grabiec
2023-03-24 17:00:27 +01:00
parent 9d786c1ebc
commit f3fbfdaa37
2 changed files with 45 additions and 0 deletions
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42
locator/tablets.cc
View File

@@ -115,4 +115,46 @@ const tablet_transition_info* tablet_map::get_tablet_transition_info(tablet_id i
return &i->second;
}
std::ostream& operator<<(std::ostream& out, tablet_id id) {
return out << size_t(id);
}
std::ostream& operator<<(std::ostream& out, const tablet_replica& r) {
return out << r.host << ":" << r.shard;
}
std::ostream& operator<<(std::ostream& out, const tablet_map& r) {
if (r.tablet_count() == 0) {
return out << "{}";
}
out << "{";
bool first = true;
tablet_id tid = r.first_tablet();
for (auto&& tablet : r._tablets) {
if (!first) {
out << ",";
}
out << format("\n [{}]: last_token={}, replicas={}", tid, r.get_last_token(tid), tablet.replicas);
if (auto tr = r.get_tablet_transition_info(tid)) {
out << format(", new_replicas={}, pending={}", tr->next, tr->pending_replica);
}
first = false;
tid = *r.next_tablet(tid);
}
return out << "\n }";
}
std::ostream& operator<<(std::ostream& out, const tablet_metadata& tm) {
out << "{";
bool first = true;
for (auto&& [id, map] : tm._tablets) {
if (!first) {
out << ",";
}
out << "\n " << id << ": " << map;
first = false;
}
return out << "\n}";
}
}

3
locator/tablets.hh
View File

@@ -43,6 +43,7 @@ struct tablet_replica {
bool operator==(const tablet_replica&) const = default;
};
std::ostream& operator<<(std::ostream&, tablet_id);
std::ostream& operator<<(std::ostream&, const tablet_replica&);
using tablet_replica_set = utils::small_vector<tablet_replica, 3>;
@@ -175,6 +176,7 @@ public:
// Destroys gently.
// The tablet map is not usable after this call and should be destroyed.
future<> clear_gently();
friend std::ostream& operator<<(std::ostream&, const tablet_map&);
private:
void check_tablet_id(tablet_id) const;
};
@@ -209,6 +211,7 @@ public:
future<> clear_gently();
public:
bool operator==(const tablet_metadata&) const = default;
friend std::ostream& operator<<(std::ostream&, const tablet_metadata&);
};
}