1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
2 // vim: ts=8 sw=2 smarttab
4 #ifndef CEPH_JOURNAL_JOURNAL_TRIMMER_H
5 #define CEPH_JOURNAL_JOURNAL_TRIMMER_H
7 #include "include/int_types.h"
8 #include "include/rados/librados.hpp"
9 #include "include/Context.h"
10 #include "common/AsyncOpTracker.h"
11 #include "common/Mutex.h"
12 #include "journal/JournalMetadata.h"
13 #include "cls/journal/cls_journal_types.h"
20 class JournalTrimmer {
22 typedef cls::journal::ObjectSetPosition ObjectSetPosition;
24 JournalTrimmer(librados::IoCtx &ioctx, const std::string &object_oid_prefix,
25 const JournalMetadataPtr &journal_metadata);
28 void shut_down(Context *on_finish);
30 void remove_objects(bool force, Context *on_finish);
31 void committed(uint64_t commit_tid);
34 typedef std::function<Context*()> CreateContext;
36 struct MetadataListener : public JournalMetadataListener {
37 JournalTrimmer *journal_trimmer;
39 MetadataListener(JournalTrimmer *journal_trimmer)
40 : journal_trimmer(journal_trimmer) {
42 void handle_update(JournalMetadata *) override {
43 journal_trimmer->handle_metadata_updated();
47 struct C_CommitPositionSafe : public Context {
48 JournalTrimmer *journal_trimmer;
50 C_CommitPositionSafe(JournalTrimmer *_journal_trimmer)
51 : journal_trimmer(_journal_trimmer) {
52 journal_trimmer->m_async_op_tracker.start_op();
54 ~C_CommitPositionSafe() override {
55 journal_trimmer->m_async_op_tracker.finish_op();
58 void finish(int r) override {
64 librados::IoCtx m_ioctx;
66 std::string m_object_oid_prefix;
68 JournalMetadataPtr m_journal_metadata;
69 MetadataListener m_metadata_listener;
71 AsyncOpTracker m_async_op_tracker;
75 bool m_remove_set_pending;
76 uint64_t m_remove_set;
77 Context *m_remove_set_ctx;
79 bool m_shutdown = false;
81 CreateContext m_create_commit_position_safe_context = [this]() {
82 return new C_CommitPositionSafe(this);
85 void trim_objects(uint64_t minimum_set);
86 void remove_set(uint64_t object_set);
88 void handle_metadata_updated();
89 void handle_set_removed(int r, uint64_t object_set);
92 } // namespace journal
94 #endif // CEPH_JOURNAL_JOURNAL_TRIMMER_H