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source: trunk/FACT++/src/rootifysql.cc@ 19191

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Last change on this file since 19191 was 19186, checked in by tbretz, 7 years ago
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1	#include "Database.h"
2
3	#include <boost/algorithm/string/join.hpp>
4	#include <boost/regex.hpp>
5	#include <boost/tokenizer.hpp>
6	#include <boost/algorithm/string.hpp>
7
8	#include "tools.h"
9	#include "Time.h"
10	#include "Configuration.h"
11
12	#include <TROOT.h>
13	#include <TSystem.h>
14	#include <TFile.h>
15	#include <TTree.h>
16
17	using namespace std;
18
19	// ------------------------------------------------------------------------
20
21	void SetupConfiguration(Configuration &conf)
22	{
23	po::options_description control("Database options");
24	control.add_options()
25	("uri,u", var<string>()->required(), "Database link as in\n\tuser:password@server[:port]/database[?compress=0\|1].")
26	("query,q", var<string>(""), "MySQL query (overwrites --file)")
27	("file", var<string>("rootify.sql"), "An ASCII file with the MySQL query (overwrites --query)")
28	("ignore-null,i", po_switch(), "Do not skip rows containing any NULL field")
29	("display,d", po_switch(), "Displays contents on the screen (most usefull in combination with mysql statements as SHOW or EXPLAIN)")
30	("write,w", var<string>(""), "Write output to an ascii file")
31	("delimiter", var<string>(""), "The delimiter used if contents are displayed with --display (default=\\t)")
32	("explain", po_switch(), "Requests an EXPLAIN from the server (shows the server optimized query)\nsee also https://dev.mysql.com/doc/refman/explain-output.html")
33	("profiling", po_switch(), "Turn on profiling and print profile")
34	("var.*", var<string>(), "Predefined SQL user variables (@VAR)")
35	("env.*", vars<string>(), "Predefined environment for substitutions in the query ($ENV)")
36	("list.*", var<string>(), "Predefined environment for substitutions in the query ($ENV). The list is read from the given file (one list entry per line)")
37	("print-connection", po_switch(), "Print database connection information")
38	("verbose,v", var<uint16_t>(1), "Verbosity (0: quiet, 1: default, 2: more, 3, ...)")
39	;
40
41	po::options_description root("Root file options");
42	root.add_options()
43	("out,o", var<string>("rootify.root"), "Output root file name")
44	("force,f", po_switch(), "Force overwriting an existing root file ('RECREATE')")
45	("update", po_switch(), "Update an existing root file with the new tree ('UPDATE')")
46	("compression,c", var<uint16_t>(1), "zlib compression level for the root file")
47	("tree,t", var<string>("Result"), "Name of the root tree")
48	("ignore", vars<string>(), "Ignore the given columns")
49	("null,n", po_switch(), "Redirect the output file to /dev/null (mainly for debugging purposes, e.g. performance studies)")
50	("no-fill", po_switch(), "Do not fill events into the root file (mainly for debugging purposes, e.g. performance studies)")
51	;
52
53	po::positional_options_description p;
54	p.add("file", 1); // The 1st positional options (n=1)
55	p.add("out", 1); // The 2nd positional options (n=1)
56
57	conf.AddOptions(control);
58	conf.AddOptions(root);
59	conf.SetArgumentPositions(p);
60	}
61
62	void PrintUsage()
63	{
64	cout <<
65	"rootifysql - Converts the result of a mysql query into a root file\n"
66	"\n"
67	"For convenience, this documentation uses the extended version of the options, "
68	"refer to the output below to get the abbreviations.\n"
69	"\n"
70	"Writes the result of a mysql query into a root file. For each column, a branch is "
71	"created of type double with the field name as name. This is usually the column name "
72	"if not specified otherwise by the AS mysql directive.\n"
73	"\n"
74	"Columns with CHAR or VARCHAR as field type are ignored. DATETIME, DATE and TIME "
75	"columns are converted to unix time (time_t). Rows containing any file which is "
76	"NULL are skipped if not suppressed by the --ignore-null option. Ideally, the query "
77	"is compiled in a way that no NULL field is returned. With the --display option the "
78	"result of the request is printed on the screen (NULL skipping still in action). "
79	"This can be useful to create an ascii file or to show results as 'SHOW DATABASES' "
80	"or 'EXPLAIN table'. To redirect the contents into an ascii file, the option -v0 "
81	"is useful. To suppress writing to an output file --null can be used.\n"
82	"\n"
83	"The default is to read the query from a file called rootify.sql. Except if a different "
84	"filename is specified by the --file option or a query is given with --query.\n"
85	"\n"
86	"As a trick, the rootify.sql file can be made excutable (chmod u+x rootify.sql). "
87	"If the first line contains '#!rootifysql', the script can be executed directly.\n"
88	"\n"
89	"Columns whose name start with @ are skipped. If you want them in your output file "
90	"give them a name using AS, e.g. 'SELECT @A:=5 AS A'.\n"
91	"\n"
92	"You can use variables in your sql query like @MyVar and define them on the "
93	"command line. In this example with --var.MyVar=5\n"
94	"\n"
95	"You can use environment definitions for substitutions in your SQL query. "
96	"For example --env.TEST=5 would replace $TEST or ${TEST} in your query by 5."
97	"If you specify one environment variable more than once, a list is created. "
98	"For example --env.TEST=1 --env.TEST=2 --env.TEST=3 would substitute "
99	"$TEST or ${TEST} by '1, 2, 3'. This is useful for the SQL `IN` keyword. "
100	"You can also read the values for an enviroment substitution from a file "
101	"(one element per line), e.g. --env.TEST=file.txt. Empty lines and lines "
102	"starting with a # are skipped.\n"
103	"\n"
104	"Comments in the query-file can be placed according to the SQL standard inline "
105	"/comment/ or introduced with # (shell script style) or -- (SQL style).\n"
106	"\n"
107	"In case of success, 0 is returned, a value>0 otherwise.\n"
108	"\n"
109	"Usage: rootifysql [rootify.sql [rootify.root]] [-u URI] [-q query\|-f file] [-i] [-o out] [-f] [-cN] [-t tree] [-vN]\n"
110	"\n"
111	;
112	cout << endl;
113	}
114
115	struct ExplainParser
116	{
117	string sql;
118
119	vector<string> vec;
120
121	string substitute(string _str, const boost::regex &expr)
122	{
123	boost::smatch match;
124	while (boost::regex_search(_str, match, expr, boost::regex_constants::format_first_only))
125	{
126	const auto &len = match.length();
127	const auto &pos = match.position();
128	const auto &str = match.str();
129
130	const auto it = find(vec.cbegin(), vec.cend(), str);
131	const size_t id = it==vec.cend() ? vec.size() : it-vec.cbegin();
132
133	_str.replace(pos, len, "{"+to_string(id)+"}");
134
135	if (it==vec.cend())
136	vec.push_back(str);//.substr(1, str.size()-2));
137	}
138
139	return _str;
140	}
141
142	string substitute(const string &str, const string &expr)
143	{
144	return substitute(str, boost::regex(expr));
145	}
146
147	vector<string> queries;
148
149	string resub(string str)
150	{
151	// search for "KEYWORD expression"
152	boost::regex reg("\\{[0-9]+\\}");
153
154	boost::smatch match;
155	while (boost::regex_search(str, match, reg, boost::regex_constants::format_first_only))
156	{
157	const auto &len = match.length();
158	const auto &pos = match.position();
159	const auto &arg = match.str(); // Argument
160
161	const auto idx = atoi(arg.c_str()+1);
162
163	str.replace(pos, len, resub(vec[idx]));
164	}
165
166	return str;
167	}
168
169	void expression(string expr, size_t indent=0)
170	{
171	if (expr[0]=='{')
172	{
173	const auto idx = atoi(expr.c_str()+1);
174
175	// This is a subquery
176	if (vec[idx].substr(0,3)=="(/*")
177	{
178	cout << setw(indent) << ' ' << "(\n";
179	find_tokens(vec[idx], indent+4);
180	cout << setw(indent) << ' ' << ") ";
181	}
182	else
183	// This is just something to substitute back
184	if (vec[idx].substr(0,2)=="({")
185	{
186	cout << setw(indent) << ' ' << "(" << resub(vec[idx]) << ") ";
187	}
188	else
189	{
190	if (indent>0)
191	cout << setw(indent) << ' ';
192	cout << resub(vec[idx]);
193	}
194	}
195	else
196	{
197	if (indent>0)
198	cout << setw(indent) << ' ';
199	cout << resub(expr);
200	}
201	}
202
203	void find_tokens(string str, size_t indent=0)
204	{
205	// ( COMMENT )?( TOKEN )?(( {NNN} \| NNN )( AS\|ON ( {NNN}) ))?(,)?)
206	//regex reg("(\\/\\\\ select\\#[0-9]+\\ \\\\/\\ *)?([a-zA-Z ]+)?((\\{[0-9]+\\}\|[0-9]+)(\\ ?([Aa][Ss]\|[Oo][Nn])\\ ?(\\{[0-9]+\\}))?(,)?)");
207
208	const string _com = "\\/\\\\ select\\#[0-9]+\\ \\\\/\\ *";
209
210	const string _tok = "[a-zA-Z_ ]+";
211
212	const string _nnn = "\\{[0-9]+\\}\|[0-9]+";
213
214	const string _as = "\\ ?([Aa][Ss])\\ ?";
215
216	// ( _nnn ) ( _as ( _nnn ))?(,)? // can also match noting in between two {NNN}
217	const string _exp = "("+_nnn+")" + "("+_as+"("+_nnn+"))?(,)?";
218
219	// Matche: ( _com )? ( ( _tok )? ( _exp ) \| ( _tok ) )
220	boost::regex reg("("+_com+")?" + "(" + "("+_tok+")?"+"("+_exp+")" + "\|" + "("+_tok+")" + ")");
221
222	boost::smatch match;
223	while (boost::regex_search(str, match, reg, boost::regex_constants::format_first_only))
224	{
225
226	const auto &com = match.str(1); // comment
227	const auto &tok1 = Tools::Trim(match.str(3)); // token with expression
228	const auto &arg1 = match.str(5); // argument 1
229	const auto &as = match.str(7); // as
230	const auto &arg2 = match.str(8); // argument 2
231	const auto &comma = match.str(9); // comma
232	const auto &tok2 = Tools::Trim(match.str(10)); // token without expression
233
234	if (!com.empty())
235	cout << setw(indent) << ' ' << "\033[34m" << com << "\033[0m" << '\n';
236
237	if (!tok1.empty())
238	cout << setw(indent) << ' ' << "\033[32m" << tok1 << "\033[0m" << '\n';
239	if (!tok2.empty())
240	cout << setw(indent) << ' ' << "\033[32m" << tok2 << "\033[0m" << '\n';
241
242	if (!arg1.empty())
243	{
244	expression(arg1, indent+4);
245
246	if (!as.empty())
247	cout << " \033[33m" << as << "\033[0m ";
248
249	if (!arg2.empty())
250	expression(arg2);
251
252	if (!comma.empty())
253	cout << ',';
254
255	cout << '\n';
256	}
257
258	str = str.substr(match.position()+match.length());
259	}
260	}
261
262
263	ExplainParser(const string &_sql) : sql(_sql)
264	{
265	// substitute all strings
266	sql = substitute(sql, "'[^']*'");
267
268	// substitute all escaped sequences (`something`.`something-else`)
269	sql = substitute(sql, "`[^`]`(\\.`[^`]`)*");
270
271	// substitute all paranthesis
272	sql = substitute(sql, "[a-zA-Z0-9_]\\([^\\(\\)]\\)");
273
274	//cout << sql << "\n\n";
275	find_tokens(sql);
276	cout << endl;
277	}
278	};
279
280	// Remove queries...
281	void format(string sql)
282	{
283	ExplainParser p(sql);
284
285	/*
286
287	SELECT
288	[ALL \| DISTINCT \| DISTINCTROW ]
289	[HIGH_PRIORITY]
290	[STRAIGHT_JOIN]
291	[SQL_SMALL_RESULT] [SQL_BIG_RESULT] [SQL_BUFFER_RESULT]
292	[SQL_CACHE \| SQL_NO_CACHE] [SQL_CALC_FOUND_ROWS]
293	select_expr [, select_expr ...]
294	[FROM table_references
295	[PARTITION partition_list]
296	[WHERE where_condition]
297	[GROUP BY {col_name \| expr \| position}, ... [WITH ROLLUP]]
298	[HAVING where_condition]
299	[WINDOW window_name AS (window_spec)
300	[, window_name AS (window_spec)] ...]
301	[ORDER BY {col_name \| expr \| position}
302	[ASC \| DESC], ... [WITH ROLLUP]]
303	[LIMIT {[offset,] row_count \| row_count OFFSET offset}]
304	[INTO OUTFILE 'file_name'
305	[CHARACTER SET charset_name]
306	export_options
307	\| INTO DUMPFILE 'file_name'
308	\| INTO var_name [, var_name]]
309	[FOR {UPDATE \| SHARE} [OF tbl_name [, tbl_name] ...] [NOWAIT \| SKIP LOCKED]
310	\| LOCK IN SHARE MODE]]
311	*/
312
313	/*
314	table_references:
315	escaped_table_reference [, escaped_table_reference] ...
316
317	escaped_table_reference:
318	table_reference
319	\| { OJ table_reference }
320
321	table_reference:
322	table_factor
323	\| join_table
324
325	table_factor:
326	tbl_name [PARTITION (partition_names)]
327	[[AS] alias] [index_hint_list]
328	\| table_subquery [AS] alias [(col_list)]
329	\| ( table_references )
330
331	join_table:
332	table_reference [INNER \| CROSS] JOIN table_factor [join_condition]
333	\| table_reference STRAIGHT_JOIN table_factor
334	\| table_reference STRAIGHT_JOIN table_factor ON conditional_expr
335	\| table_reference {LEFT\|RIGHT} [OUTER] JOIN table_reference join_condition
336	\| table_reference NATURAL [INNER \| {LEFT\|RIGHT} [OUTER]] JOIN table_factor
337
338	join_condition:
339	ON conditional_expr
340	\| USING (column_list)
341
342	index_hint_list:
343	index_hint [, index_hint] ...
344
345	index_hint:
346	USE {INDEX\|KEY}
347	[FOR {JOIN\|ORDER BY\|GROUP BY}] ([index_list])
348	\| IGNORE {INDEX\|KEY}
349	[FOR {JOIN\|ORDER BY\|GROUP BY}] (index_list)
350	\| FORCE {INDEX\|KEY}
351	[FOR {JOIN\|ORDER BY\|GROUP BY}] (index_list)
352
353	index_list:
354	index_name [, index_name] ...
355	*/
356
357	}
358
359	int finish(Database &connection, const uint16_t &verbose, const bool &profiling, const bool &print_connection)
360	{
361	if (verbose>0)
362	{
363	try
364	{
365	const auto resw =
366	connection.query("SHOW WARNINGS").store();
367
368	if (resw.num_rows()>0)
369	cout << "\n" << resw.num_rows() << " Warning(s) issued:\n\n";
370
371	for (size_t i=0; i<resw.num_rows(); i++)
372	{
373	const mysqlpp::Row &roww = resw[i];
374
375	cout << roww["Level"] << '[' << roww["Code"] << "]: ";
376	cout << roww["Message"] << '\n';
377	}
378	cout << endl;
379
380	}
381	catch (const exception &e)
382	{
383	cerr << "\nSHOW WARNINGS\n\n";
384	cerr << "SQL query failed:\n" << e.what() << endl;
385	return 1;
386	}
387	}
388
389	if (profiling)
390	{
391	try
392	{
393	const auto N =
394	connection.query("SHOW PROFILES").store().num_rows();
395
396	const auto resp =
397	connection.query("SHOW PROFILE ALL FOR QUERY "+to_string(verbose?N-1:N)).store();
398
399	cout << '\n';
400	cout << left;
401	cout << setw(26) << "Status" << ' ';
402	cout << right;
403	cout << setw(11) << "Duration" << ' ';
404	cout << setw(11) << "CPU User" << ' ';
405	cout << setw(11) << "CPU System" << '\n';
406	cout << "--------------------------------------------------------------\n";
407	for (size_t i=0; i<resp.num_rows(); i++)
408	{
409	const mysqlpp::Row &rowp = resp[i];
410
411	cout << left;
412	cout << setw(26) << rowp["Status"] << ' ';
413	cout << right;
414	cout << setw(11) << rowp["Duration"] << ' ';
415	cout << setw(11) << rowp["CPU_user"] << ' ';
416	cout << setw(11) << rowp["CPU_system"] << '\n';
417	}
418	cout << "--------------------------------------------------------------\n";
419	cout << endl;
420	}
421	catch (const exception &e)
422	{
423	cerr << "\nSHOW PROFILE ALL\n\n";
424	cerr << "SQL query failed:\n" << e.what() << '\n' <<endl;
425	return 2;
426	}
427	}
428
429	if (print_connection)
430	{
431	try
432	{
433	// Exchange _send and _received as it is the view of the server
434	const auto &res1 = connection.query("SHOW STATUS LIKE 'Bytes_%'").store();
435	cout << left << setw(16) << res1[1]["Variable_name"] << ' ' << Tools::Scientific(res1[0]["Value"]) << endl;
436	cout << left << setw(16) << res1[0]["Variable_name"] << ' ' << Tools::Scientific(res1[1]["Value"]) << endl;
437	cout << endl;
438	}
439	catch (const exception &e)
440	{
441	cerr << "\nSHOW STATUS LIKE 'Bytes_%'\n\n";
442	cerr << "SQL query failed:\n" << e.what() << endl;
443	return 3;
444	}
445	}
446
447	if (verbose>0)
448	cout << "Success!\n" << endl;
449	return 0;
450
451	}
452
453	int main(int argc, const char* argv[])
454	{
455	Time start;
456
457	gROOT->SetBatch();
458
459	Configuration conf(argv[0]);
460	conf.SetPrintUsage(PrintUsage);
461	SetupConfiguration(conf);
462
463	if (!conf.DoParse(argc, argv))
464	return 127;
465
466	// ----------------------------- Evaluate options --------------------------
467	const string uri = conf.Get<string>("uri");
468	const string out = conf.Get<string>("out");
469	const string file = conf.Get<string>("file");
470	const string tree = conf.Get<string>("tree");
471	const bool force = conf.Get<bool>("force");
472	const bool ignorenull = conf.Get<bool>("ignore-null");
473	const bool update = conf.Get<bool>("update");
474	const bool display = conf.Get<bool>("display");
475	const string write = conf.Get<string>("write");
476	const bool noout = conf.Get<bool>("null");
477	const bool nofill = conf.Get<bool>("no-fill");
478	const bool explain = conf.Get<bool>("explain");
479	const bool profiling = conf.Get<bool>("profiling");
480	const uint16_t verbose = conf.Get<uint16_t>("verbose");
481	const uint16_t compression = conf.Get<uint16_t>("compression");
482	const string delimiter = conf.Get<string>("delimiter");
483	const vector<string> _ignore = conf.Vec<string>("ignore");
484	const bool print_connection = conf.Get<bool>("print-connection");
485	//const vector<Map> mymap = conf.Vec<Map>("map");
486
487	// -------------------------------------------------------------------------
488
489	const auto vars = conf.GetWildcardOptions("var.*");
490
491	vector<string> variables;
492	for (auto var=vars.cbegin(); var!=vars.cend(); var++)
493	variables.emplace_back('@'+var->substr(4)+":="+Tools::Trim(conf.Get<string>(*var)));
494
495	// -------------------------------------------------------------------------
496
497	if (verbose>0)
498	{
499	cout << "\n------------------------ Rootify SQL -------------------------" << endl;
500	cout << "Start Time: " << Time::sql << Time(Time::local) << endl;
501	}
502
503	string query = conf.Get<string>("query");
504	if (query.empty())
505	{
506	if (verbose>0)
507	cout << "Reading query from file '" << file << "'." << endl;
508
509	ifstream fin(file);
510	if (!fin)
511	{
512	cerr << "Could not open query in '" << file << "': " << strerror(errno) << endl;
513	return 4;
514	}
515	getline(fin, query, (char)fin.eof());
516	}
517
518	if (query.empty())
519	{
520	cerr << "No query specified." << endl;
521	return 5;
522	}
523
524	// -------------------------------------------------------------------------
525
526	map<string, vector<string>> envs;
527
528	const auto &envs1 = conf.GetWildcardOptions("env.*");
529	for (auto env=envs1.cbegin(); env!=envs1.cend(); env++)
530	envs[env->substr(4)] = conf.Vec<string>(*env);
531
532	const auto &envs2 = conf.GetWildcardOptions("list.*");
533	for (auto env=envs2.cbegin(); env!=envs2.cend(); env++)
534	{
535	const string fname = conf.Get<string>(*env);
536	const string &ident = env->substr(5);
537
538	ifstream fin(fname);
539	if (!fin)
540	{
541	cerr << "Could not open environment in '" << fname << "' for ${" << ident << "}: " << strerror(errno) << endl;
542	return 6;
543	}
544	for (string line; getline(fin, line); )
545	{
546	const auto &l = Tools::Trim(line);
547	if (!l.empty() && l[0]!='#')
548	envs[ident].push_back(line);
549	}
550
551	if (verbose>0)
552	cout << "Found " << envs[ident].size() << " list element(s) for ${" << ident << "}" << endl;
553	}
554
555	for (auto env=envs.cbegin(); env!=envs.cend(); env++)
556	{
557	boost::regex rexpr("\\$(\\{"+env->first+"\\}\|"+env->first+"\\b)");
558	query = boost::regex_replace(query, rexpr, boost::join(env->second, ", "));
559	}
560
561	// -------------------------- Check for file permssion ---------------------
562	// Strictly speaking, checking for write permission and existance is not necessary,
563	// but it is convenient that the user does not find out that it failed after
564	// waiting long for the query result
565	//
566	// I am using root here instead of boost to be
567	// consistent with the access pattern by TFile
568	TString path(noout?"/dev/null":out.c_str());
569	gSystem->ExpandPathName(path);
570
571	if (!noout)
572	{
573	FileStat_t stat;
574	const Int_t exist = !gSystem->GetPathInfo(path, stat);
575	const Bool_t _write = !gSystem->AccessPathName(path, kWritePermission) && R_ISREG(stat.fMode);
576
577	if ((update && !exist) \|\| (update && exist && !_write) \|\| (force && exist && !_write))
578	{
579	cerr << "File '" << path << "' is not writable." << endl;
580	return 7;
581	}
582
583	if (!update && !force && exist)
584	{
585	cerr << "File '" << path << "' already exists." << endl;
586	return 8;
587	}
588	}
589
590	Time start2;
591
592	// --------------------------- Connect to database -------------------------------------------------
593
594	if (*query.rbegin()!='\n')
595	query += '\n';
596
597	if (verbose>0)
598	{
599	cout << "Connecting to database...\n";
600	cout << "Client Version: " << mysqlpp::Connection().client_version() << endl;
601	}
602
603	Database connection(uri); // Keep alive while fetching rows
604
605	if (verbose>0)
606	cout << "Server Version: " << connection.server_version() << endl;
607
608	if (print_connection)
609	{
610	try
611	{
612	const auto &res1 = connection.query("SHOW STATUS LIKE 'Compression'").store();
613	cout << "Compression of database connection is " << string(res1[0][1]) << endl;
614
615	const auto &res2 = connection.query("SHOW STATUS LIKE 'Ssl_cipher'").store();
616	cout << "Connection to databases is " << (string(res2[0][1]).empty()?"UNENCRYPTED":"ENCRYPTED ("+string(res2[0][1])+")") << endl;
617	}
618	catch (const exception &e)
619	{
620	cerr << "\nSHOW STATUS LIKE 'Compression'\n\n";
621	cerr << "SQL query failed:\n" << e.what() << endl;
622	return 9;
623	}
624	}
625
626	try
627	{
628	if (profiling)
629	connection.query("SET PROFILING=1").execute();
630	}
631	catch (const exception &e)
632	{
633	cerr << "\nSET profiling=1\n\n";
634	cerr << "SQL query failed:\n" << e.what() << endl;
635	return 10;
636	}
637
638	// -------------------------- Set user defined variables -------------------
639	if (variables.size()>0)
640	{
641	if (verbose>0)
642	cout << "Setting user defined variables..." << endl;
643
644	const string varset =
645	"SET\n "+boost::algorithm::join(variables, ",\n ");
646
647	try
648	{
649	connection.query(varset).execute();
650	}
651	catch (const exception &e)
652	{
653	cerr << '\n' << varset << "\n\n";
654	cerr << "SQL query failed:\n" << e.what() << endl;
655	return 11;
656	}
657
658	if (verbose>2)
659	cout << '\n' << varset << '\n' << endl;
660	}
661
662	// ------------------------- Explain query if requested --------------------
663
664	if (explain)
665	{
666	try
667	{
668	const auto res0 =
669	connection.query("EXPLAIN FORMAT=JSON "+query).store();
670
671	cout << res0[0][0] << endl;
672	cout << endl;
673
674	const mysqlpp::StoreQueryResult res1 =
675	connection.query("EXPLAIN "+query).store();
676
677	for (size_t i=0; i<res1.num_rows(); i++)
678	{
679	const mysqlpp::Row &row = res1[i];
680
681	cout << "\nid : " << row["id"];
682	cout << "\nselect type : " << row["select_type"];
683
684	if (!row["table"].is_null())
685	cout << "\ntable : " << row["table"];
686
687	if (!row["partitions"].is_null())
688	cout << "\npartitions : " << row["partitions"];
689
690	if (!row["key"].is_null())
691	cout << "\nselected key : " << row["key"] << " [len=" << row["key_len"] << "] out of (" << row["possible_keys"] << ")";
692
693	if (!row["type"].is_null())
694	cout << "\njoin type : " << row["type"];
695
696	//if (!row["possible_keys"].is_null())
697	// cout << "\npossible_keys: " << row["possible_keys"];
698
699	//if (!row["key_len"].is_null())
700	// cout << "\nkey_len : " << row["key_len"];
701
702	if (!row["ref"].is_null())
703	cout << "\nref : (" << row["ref"] << ") compared to the index";
704
705	if (!row["rows"].is_null())
706	cout << "\nrows : " << row["rows"];
707
708	if (!row["filtered"].is_null())
709	cout << "\nfiltered : " << row["filtered"];
710
711	if (!row["extra"].is_null())
712	cout << "\nExtra : " << row["extra"];
713
714	cout << endl;
715	}
716
717	cout << endl;
718
719	const mysqlpp::StoreQueryResult res2 =
720	connection.query("SHOW WARNINGS").store();
721
722	for (size_t i=0; i<res2.num_rows(); i++)
723	{
724	const mysqlpp::Row &row = res2[i];
725
726	// 1003 //
727	cout << row["Level"] << '[' << row["Code"] << "]:\n";
728	if (uint32_t(row["Code"])==1003)
729	format(row["Message"].c_str());
730	else
731	cout << row["Message"] << '\n' << endl;
732
733	}
734
735	}
736	catch (const exception &e)
737	{
738	cerr << '\n' << query << "\n\n";
739	cerr << "SQL query failed:\n" << e.what() << endl;
740	return 12;
741	}
742
743	return 0;
744	}
745
746	// -------------------------- Request data from database -------------------
747	if (verbose>0)
748	cout << "Requesting data..." << endl;
749
750	if (verbose>2)
751	cout << '\n' << query << endl;
752
753	const mysqlpp::UseQueryResult res =
754	connection.query(query).use();
755
756	// -------------------------------------------------------------------------
757
758	if (verbose>0)
759	{
760	cout << "Opening file '" << path << "' [compression=" << compression << "]...\n";
761	cout << "Writing data to tree '" << tree << "'" << endl;
762	}
763
764	// ----------------------------- Open output file --------------------------
765	TFile tfile(path, update?"UPDATE":(force?"RECREATE":"CREATE"), "Rootify SQL", compression);
766	if (tfile.IsZombie())
767	return 13;
768
769	// -------------------------------------------------------------------------
770
771	// get the first row to get the field description
772	mysqlpp::Row row = res.fetch_row();
773	if (!row)
774	{
775	cerr << "Empty set returned... nothing to write." << endl;
776	return finish(connection, verbose, profiling, print_connection)+20;
777	}
778
779	if (verbose>0)
780	cout << "Trying to setup " << row.size() << " branches..." << endl;
781
782	if (verbose>1)
783	cout << endl;
784
785	const mysqlpp::FieldNames &l = *row.field_list().list;
786
787	vector<double> buf(l.size());
788	vector<uint8_t> typ(l.size(),'n'); // n=number [double], d is used for DateTime
789
790	UInt_t cols = 0;
791
792
793	// -------------------- Configure branches of TTree ------------------------
794	TTree *ttree = new TTree(tree.c_str(), query.c_str());
795
796	size_t skipat = 0;
797	size_t skipreg = 0;
798	for (size_t i=0; i<l.size(); i++)
799	{
800	const string t = row[i].type().sql_name();
801
802	if (t.find("DATETIME")!=string::npos)
803	typ[i] = 'd';
804	else
805	if (t.find("DATE")!=string::npos)
806	typ[i] = 'D';
807	else
808	if (t.find("TIME")!=string::npos)
809	typ[i] = 'T';
810	else
811	if (t.find("VARCHAR")!=string::npos)
812	typ[i] = 'V';
813	else
814	if (t.find("CHAR")!=string::npos)
815	typ[i] = 'C';
816
817	bool found = false;
818	for (auto pattern=_ignore.cbegin(); pattern!=_ignore.cend(); pattern++)
819	{
820	if (boost::regex_match(l[i], boost::regex(*pattern)))
821	{
822	found = true;
823	typ[i] = '-';
824	skipreg++;
825	break;
826	}
827	}
828
829	if (l[i][0]=='@')
830	{
831	typ[i] = '@';
832	skipat++;
833	}
834
835	const bool use = l[i][0]!='@' && typ[i]!='V' && typ[i]!='C' && !found;
836
837	if (verbose>1)
838	cout << (use?" + ":" - ") << l[i].c_str() << " [" << t << "] {" << typ[i] << "}\n";
839
840	if (use)
841	{
842	// string name = l[i];
843	// for (const auto &m: mymap)
844	// name = boost::regex_replace(l[i], boost::regex(m.first), m.second);
845
846	ttree->Branch(l[i].c_str(), buf.data()+i);
847	cols++;
848	}
849	}
850	// -------------------------------------------------------------------------
851
852	if (verbose>1)
853	cout << endl;
854	if (verbose>0)
855	{
856	if (skipreg)
857	cout << skipreg << " branches skipped due to ignore list." << endl;
858	if (skipat)
859	cout << skipat << " branches skipped due to name starting with @." << endl;
860	cout << "Configured " << cols << " branches.\nFilling branches..." << endl;
861	}
862
863	ofstream fout(write);
864	if (!write.empty() && !fout)
865	cout << "WARNING: Writing to '" << write << "' failed: " << strerror(errno) << endl;
866
867	if (display)
868	{
869	cout << endl;
870	cout << "#";
871	for (size_t i=0; i<l.size(); i++)
872	cout << ' ' << l[i].c_str();
873	cout << endl;
874	}
875
876	if (!write.empty())
877	{
878	fout << "#";
879	for (size_t i=0; i<l.size(); i++)
880	fout << ' ' << l[i].c_str();
881	fout << endl;
882	}
883
884	// ---------------------- Fill TTree with DB data --------------------------
885	size_t count = 0;
886	size_t skip = 0;
887	do
888	{
889	count++;
890
891	ostringstream sout;
892
893	size_t idx=0;
894	for (auto col=row.begin(); col!=row.end(); col++, idx++)
895	{
896	if (display \|\| !write.empty())
897	{
898	if (idx>0)
899	sout << (delimiter.empty()?"\t":delimiter);
900	sout << col->c_str();
901	}
902
903	if (!ignorenull && col->is_null())
904	{
905	skip++;
906	break;
907	}
908
909	switch (typ[idx])
910	{
911	case 'd':
912	buf[idx] = time_t((mysqlpp::DateTime)(*col));
913	break;
914
915	case 'D':
916	buf[idx] = time_t((mysqlpp::Date)(*col));
917	break;
918
919	case 'T':
920	buf[idx] = time_t((mysqlpp::Time)(*col));
921	break;
922
923	case 'V':
924	case 'C':
925	case '-':
926	case '@':
927	break;
928
929	default:
930	buf[idx] = atof(col->c_str());
931	}
932	}
933
934	if (idx==row.size())
935	{
936	if (!nofill)
937	ttree->Fill();
938
939	if (display)
940	cout << sout.str() << endl;
941	if (!write.empty())
942	fout << sout.str() << '\n';
943	}
944
945	row = res.fetch_row();
946
947
948	} while (row);
949
950	// -------------------------------------------------------------------------
951
952	if (display)
953	cout << '\n' << endl;
954
955	if (verbose>0)
956	{
957	cout << count << " rows fetched." << endl;
958	if (skip>0)
959	cout << skip << " rows skipped due to NULL field." << endl;
960
961	cout << ttree->GetEntries() << " rows filled into tree." << endl;
962	}
963
964	ttree->Write();
965	tfile.Close();
966
967	if (verbose>0)
968	{
969	const auto sec = Time().UnixTime()-start.UnixTime();
970
971	cout << Tools::Scientific(tfile.GetSize()) << "B written to disk.\n";
972	cout << "File closed.\n";
973	cout << "Execution time: " << sec << "s ";
974	cout << "(" << Tools::Fractional(sec/count) << "s/row)\n";
975	cout << "--------------------------------------------------------------" << endl;
976	}
977
978	return finish(connection, verbose, profiling, print_connection);
979	}

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