135 lines
4.0 KiB
C++
135 lines
4.0 KiB
C++
// Copyright (c) Vitaliy Filippov, 2019+
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// License: VNPL-1.1 (see README.md for details)
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//
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// NFS proxy over VitastorKV database - header
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#pragma once
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#include "nfs/nfs.h"
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#define KV_ROOT_INODE 1
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#define SHARED_FILE_MAGIC_V1 0x711A5158A6EDF17E
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struct nfs_kv_write_state;
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struct list_cookie_t
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{
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uint64_t dir_ino, cookieverf, cookie;
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};
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inline bool operator < (const list_cookie_t & a, const list_cookie_t & b)
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{
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return a.dir_ino < b.dir_ino || a.dir_ino == b.dir_ino &&
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(a.cookieverf < b.cookieverf || a.cookieverf == b.cookieverf && a.cookie < b.cookie);
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};
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struct list_cookie_val_t
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{
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std::string key;
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};
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struct shared_alloc_queue_t
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{
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nfs_kv_write_state *st;
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int state;
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};
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struct kv_inode_extend_t
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{
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int refcnt = 0;
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uint64_t cur_extend = 0, next_extend = 0, done_extend = 0;
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std::vector<std::function<void()>> waiters;
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};
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struct kv_idgen_t
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{
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uint64_t next_id = 1, allocated_id = 0;
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uint64_t min_id = 1;
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std::vector<uint64_t> unallocated_ids;
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};
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struct kv_fs_state_t
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{
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nfs_proxy_t *proxy = NULL;
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int touch_timer_id = -1;
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uint64_t fs_kv_inode = 0;
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uint64_t fs_inode_count = 0;
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int readdir_getattr_parallel = 8, id_alloc_batch_size = 200;
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uint64_t pool_block_size = 0;
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uint64_t pool_alignment = 0;
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uint64_t shared_inode_threshold = 0;
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uint64_t touch_interval = 1000;
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std::map<list_cookie_t, list_cookie_val_t> list_cookies;
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std::map<pool_id_t, kv_idgen_t> idgen;
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std::vector<shared_alloc_queue_t> allocating_shared;
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uint64_t cur_shared_inode = 0, cur_shared_offset = 0;
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std::map<inode_t, kv_inode_extend_t> extends;
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std::set<inode_t> touch_queue;
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std::vector<uint8_t> zero_block;
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std::vector<uint8_t> scrap_block;
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void init(nfs_proxy_t *proxy, json11::Json cfg);
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void touch_inodes();
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~kv_fs_state_t();
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};
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struct shared_file_header_t
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{
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uint64_t magic = 0;
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uint64_t inode = 0;
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uint64_t alloc = 0;
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};
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struct nfs_rmw_t
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{
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nfs_proxy_t *parent = NULL;
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uint64_t ino = 0;
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uint64_t offset = 0;
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uint8_t *buf = NULL;
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uint64_t size = 0;
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uint8_t *part_buf = NULL;
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uint64_t version = 0;
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nfs_rmw_t *other = NULL;
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std::function<void(nfs_rmw_t *)> cb;
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int res = 0;
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};
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nfsstat3 vitastor_nfs_map_err(int err);
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nfstime3 nfstime_from_str(const std::string & s);
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std::string nfstime_to_str(nfstime3 t);
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std::string nfstime_now_str();
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int kv_map_type(const std::string & type);
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fattr3 get_kv_attributes(nfs_client_t *self, uint64_t ino, json11::Json attrs);
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std::string kv_direntry_key(uint64_t dir_ino, const std::string & filename);
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std::string kv_direntry_filename(const std::string & key);
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std::string kv_inode_key(uint64_t ino);
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std::string kv_fh(uint64_t ino);
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uint64_t kv_fh_inode(const std::string & fh);
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bool kv_fh_valid(const std::string & fh);
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void allocate_new_id(nfs_client_t *self, pool_id_t pool_id, std::function<void(int res, uint64_t new_id)> cb);
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void kv_read_inode(nfs_proxy_t *proxy, uint64_t ino,
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std::function<void(int res, const std::string & value, json11::Json ientry)> cb,
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bool allow_cache = false);
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uint64_t align_shared_size(nfs_client_t *self, uint64_t size);
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void nfs_do_rmw(nfs_rmw_t *rmw);
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int kv_nfs3_getattr_proc(void *opaque, rpc_op_t *rop);
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int kv_nfs3_setattr_proc(void *opaque, rpc_op_t *rop);
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int kv_nfs3_lookup_proc(void *opaque, rpc_op_t *rop);
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int kv_nfs3_readlink_proc(void *opaque, rpc_op_t *rop);
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int kv_nfs3_read_proc(void *opaque, rpc_op_t *rop);
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int kv_nfs3_write_proc(void *opaque, rpc_op_t *rop);
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int kv_nfs3_create_proc(void *opaque, rpc_op_t *rop);
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int kv_nfs3_mkdir_proc(void *opaque, rpc_op_t *rop);
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int kv_nfs3_symlink_proc(void *opaque, rpc_op_t *rop);
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int kv_nfs3_mknod_proc(void *opaque, rpc_op_t *rop);
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int kv_nfs3_remove_proc(void *opaque, rpc_op_t *rop);
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int kv_nfs3_rmdir_proc(void *opaque, rpc_op_t *rop);
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int kv_nfs3_rename_proc(void *opaque, rpc_op_t *rop);
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int kv_nfs3_link_proc(void *opaque, rpc_op_t *rop);
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int kv_nfs3_readdir_proc(void *opaque, rpc_op_t *rop);
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int kv_nfs3_readdirplus_proc(void *opaque, rpc_op_t *rop);
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