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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#ifndef CEPH_CRUSH_COMPILER_H
#define CEPH_CRUSH_COMPILER_H
#include "crush/CrushWrapper.h"
#include "crush/grammar.h"
#include <map>
#include <iostream>
class CrushCompiler {
CrushWrapper& crush;
ostream& err;
int verbose;
bool unsafe_tunables;
// decompile
enum dcb_state_t {
DCB_STATE_IN_PROGRESS = 0,
DCB_STATE_DONE
};
int decompile_weight_set_weights(crush_weight_set weight_set,
ostream &out);
int decompile_weight_set(crush_weight_set *weight_set,
__u32 size,
ostream &out);
int decompile_choose_arg(crush_choose_arg *arg,
int bucket_id,
ostream &out);
int decompile_ids(int *ids,
__u32 size,
ostream &out);
int decompile_choose_arg_map(crush_choose_arg_map arg_map,
ostream &out);
int decompile_choose_args(const std::pair<const long unsigned int, crush_choose_arg_map> &i,
ostream &out);
int decompile_bucket_impl(int i, ostream &out);
int decompile_bucket(int cur,
std::map<int, dcb_state_t>& dcb_states,
ostream &out);
// compile
typedef char const* iterator_t;
typedef tree_match<iterator_t> parse_tree_match_t;
typedef parse_tree_match_t::tree_iterator iter_t;
typedef parse_tree_match_t::node_t node_t;
map<string, int> item_id;
map<int, string> id_item;
map<int, unsigned> item_weight;
map<string, int> type_id;
map<string, int> rule_id;
std::map<int32_t, map<int32_t, int32_t> > class_bucket; // bucket id -> class id -> shadow bucket id
string string_node(node_t &node);
int int_node(node_t &node);
float float_node(node_t &node);
int parse_tunable(iter_t const& i);
int parse_device(iter_t const& i);
int parse_bucket_type(iter_t const& i);
int parse_bucket(iter_t const& i);
int parse_rule(iter_t const& i);
int parse_weight_set_weights(iter_t const& i, int bucket_id, crush_weight_set *weight_set);
int parse_weight_set(iter_t const& i, int bucket_id, crush_choose_arg *arg);
int parse_choose_arg_ids(iter_t const& i, int bucket_id, crush_choose_arg *args);
int parse_choose_arg(iter_t const& i, crush_choose_arg *args);
int parse_choose_args(iter_t const& i);
void find_used_bucket_ids(iter_t const& i);
int parse_crush(iter_t const& i);
void dump(iter_t const& i, int ind=1);
string consolidate_whitespace(string in);
int adjust_bucket_item_place(iter_t const &i);
public:
CrushCompiler(CrushWrapper& c, ostream& eo, int verbosity=0)
: crush(c), err(eo), verbose(verbosity),
unsafe_tunables(false) {}
~CrushCompiler() {}
void enable_unsafe_tunables() {
unsafe_tunables = true;
}
int decompile(ostream& out);
int compile(istream& in, const char *infn=0);
};
#endif
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