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source: trunk/FACT++/src/rootifysql.cc@ 19369

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Last change on this file since 19369 was 19301, checked in by tbretz, 6 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	("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")
31	("profiling", po_switch(), "Turn on profiling and print profile")
32	("var.*", var<string>(), "Predefined SQL user variables (@VAR)")
33	("env.*", vars<string>(), "Predefined environment for substitutions in the query ($ENV)")
34	("list.*", var<string>(), "Predefined environment for substitutions in the query ($ENV). The list is read from the given file (one list entry per line)")
35	("print-connection", po_switch(), "Print database connection information")
36	("verbose,v", var<uint16_t>(1), "Verbosity (0: quiet, 1: default, 2: more, 3, ...)")
37	;
38
39	po::options_description ascii("ASCII output");
40	ascii.add_options()
41	("write,w", var<string>(""), "Write output to an ascii file")
42	("delimiter", var<string>(), "The delimiter used if contents are displayed with --display (default=\\t)")
43	("copy-shabang", po_switch(), "Copy the sha-bang line if exists to the output file")
44	("copy-header", po_switch(), "Copy the header (all line starting with '#' up to the first non-comment line to the output file")
45	("copy-query", po_switch(), "Copy the query to the ascii output file")
46	("copy-comments", po_switch(), "Copy all lines starting with '#' to the output file which are not part of header")
47	("copy-all", po_switch(), "An alias for --copy-header --copy-query --copy-comments")
48	;
49
50	po::options_description root("Root file options");
51	root.add_options()
52	("out,o", var<string>("rootify.root"), "Output root file name")
53	("force,f", po_switch(), "Force overwriting an existing root file ('RECREATE')")
54	("update", po_switch(), "Update an existing root file with the new tree ('UPDATE')")
55	("compression,c", var<uint16_t>(1), "zlib compression level for the root file")
56	("tree,t", var<string>("Result"), "Name of the root tree")
57	("ignore", vars<string>(), "Ignore the given columns")
58	("null,n", po_switch(), "Redirect the output file to /dev/null (mainly for debugging purposes, e.g. performance studies)")
59	("no-fill", po_switch(), "Do not fill events into the root file (mainly for debugging purposes, e.g. performance studies)")
60	;
61
62	po::options_description split("Splitting options");
63	split.add_options()
64	("split-sequence,S", vars<uint16_t>(), "Split data sequentially into several trees/files (e.g. 1, 1, 2)")
65	("split-quantile,Q", vars<double>(), "Split data randomly into several trees/files (e.g. 0.5, 1)")
66	("seed", var<uint64_t>(mt19937_64::default_seed), "Seed value in case of random split")
67	;
68
69	po::positional_options_description p;
70	p.add("file", 1); // The 1st positional options (n=1)
71	p.add("out", 1); // The 2nd positional options (n=1)
72
73	conf.AddOptions(control);
74	conf.AddOptions(ascii);
75	conf.AddOptions(root);
76	conf.AddOptions(split);
77	conf.SetArgumentPositions(p);
78	}
79
80	void PrintUsage()
81	{
82	cout <<
83	"rootifysql - Converts the result of a mysql query into a root file\n"
84	"\n"
85	"For convenience, this documentation uses the extended version of the options, "
86	"refer to the output below to get the abbreviations.\n"
87	"\n"
88	"Writes the result of a mysql query into a root file. For each column, a branch is "
89	"created of type double with the field name as name. This is usually the column name "
90	"if not specified otherwise by the AS mysql directive.\n"
91	"\n"
92	"Columns with CHAR or VARCHAR as field type are ignored. DATETIME, DATE and TIME "
93	"columns are converted to unix time (time_t). Rows containing any file which is "
94	"NULL are skipped if not suppressed by the --ignore-null option. Ideally, the query "
95	"is compiled in a way that no NULL field is returned. With the --display option the "
96	"result of the request is printed on the screen (NULL skipping still in action). "
97	"This can be useful to create an ascii file or to show results as 'SHOW DATABASES' "
98	"or 'EXPLAIN table'. To redirect the contents into an ascii file, the option -v0 "
99	"is useful. To suppress writing to an output file --null can be used.\n"
100	"\n"
101	"The default is to read the query from a file called rootify.sql. Except if a different "
102	"filename is specified by the --file option or a query is given with --query.\n"
103	"\n"
104	"As a trick, the rootify.sql file can be made excutable (chmod u+x rootify.sql). "
105	"If the first line contains '#!rootifysql', the script can be executed directly.\n"
106	"\n"
107	"Columns whose name start with @ are skipped. If you want them in your output file "
108	"give them a name using AS, e.g. 'SELECT @A:=5 AS A'.\n"
109	"\n"
110	"You can use variables in your sql query like @MyVar and define them on the "
111	"command line. In this example with --var.MyVar=5\n"
112	"\n"
113	"You can use environment definitions for substitutions in your SQL query. "
114	"For example --env.TEST=5 would replace $TEST or ${TEST} in your query by 5."
115	"If you specify one environment variable more than once, a list is created. "
116	"For example --env.TEST=1 --env.TEST=2 --env.TEST=3 would substitute "
117	"$TEST or ${TEST} by '1, 2, 3'. This is useful for the SQL `IN` keyword. "
118	"You can also read the values for an enviroment substitution from a file "
119	"(one element per line), e.g. --env.TEST=file.txt. Empty lines and lines "
120	"starting with a # are skipped.\n"
121	"\n"
122	"Comments in the query-file can be placed according to the SQL standard inline "
123	"/comment/ or introduced with # (shell script style) or -- (SQL style).\n"
124	"\n"
125	"For several purposes, it might be convenient to split the output to several "
126	"different root-trees or ascii files. This can be done using the --split-sequence (-S) "
127	"and the --split-quantile (-Q) options. If a split sequence is defined as "
128	"-S 1 -S 2 -S 1 the events are split by 1:2:1 in this sequence order. If "
129	"quantiled are given as -Q 0.5 -Q 0.6, the first tree will contain 50% of "
130	"the second one 10% and the third one 40%. The corresponding seed value can "
131	"be set with --seed.\n"
132	"\n"
133	"In case of success, 0 is returned, a value>0 otherwise.\n"
134	"\n"
135	"Usage: rootifysql [rootify.sql [rootify.root]] [-u URI] [-q query\|-f file] [-i] [-o out] [-f] [-cN] [-t tree] [-vN]\n"
136	"\n"
137	;
138	cout << endl;
139	}
140
141	struct ExplainParser
142	{
143	string sql;
144
145	vector<string> vec;
146
147	string substitute(string _str, const boost::regex &expr)
148	{
149	boost::smatch match;
150	while (boost::regex_search(_str, match, expr, boost::regex_constants::format_first_only))
151	{
152	const auto &len = match.length();
153	const auto &pos = match.position();
154	const auto &str = match.str();
155
156	const auto it = find(vec.cbegin(), vec.cend(), str);
157	const size_t id = it==vec.cend() ? vec.size() : it-vec.cbegin();
158
159	_str.replace(pos, len, "{"+to_string(id)+"}");
160
161	if (it==vec.cend())
162	vec.push_back(str);//.substr(1, str.size()-2));
163	}
164
165	return _str;
166	}
167
168	string substitute(const string &str, const string &expr)
169	{
170	return substitute(str, boost::regex(expr));
171	}
172
173	vector<string> queries;
174
175	string resub(string str)
176	{
177	// search for "KEYWORD expression"
178	boost::regex reg("\\{[0-9]+\\}");
179
180	boost::smatch match;
181	while (boost::regex_search(str, match, reg, boost::regex_constants::format_first_only))
182	{
183	const auto &len = match.length();
184	const auto &pos = match.position();
185	const auto &arg = match.str(); // Argument
186
187	const auto idx = atoi(arg.c_str()+1);
188
189	str.replace(pos, len, resub(vec[idx]));
190	}
191
192	return str;
193	}
194
195	void expression(string expr, size_t indent=0)
196	{
197	if (expr[0]=='{')
198	{
199	const auto idx = atoi(expr.c_str()+1);
200
201	// This is a subquery
202	if (vec[idx].substr(0,3)=="(/*")
203	{
204	cout << setw(indent) << ' ' << "(\n";
205	find_tokens(vec[idx], indent+4);
206	cout << setw(indent) << ' ' << ") ";
207	}
208	else
209	// This is just something to substitute back
210	if (vec[idx].substr(0,2)=="({")
211	{
212	cout << setw(indent) << ' ' << "(" << resub(vec[idx]) << ") ";
213	}
214	else
215	{
216	if (indent>0)
217	cout << setw(indent) << ' ';
218	cout << resub(vec[idx]);
219	}
220	}
221	else
222	{
223	if (indent>0)
224	cout << setw(indent) << ' ';
225	cout << resub(expr);
226	}
227	}
228
229	void find_tokens(string str, size_t indent=0)
230	{
231	// ( COMMENT )?( TOKEN )?(( {NNN} \| NNN )( AS\|ON ( {NNN}) ))?(,)?)
232	//regex reg("(\\/\\\\ select\\#[0-9]+\\ \\\\/\\ *)?([a-zA-Z ]+)?((\\{[0-9]+\\}\|[0-9]+)(\\ ?([Aa][Ss]\|[Oo][Nn])\\ ?(\\{[0-9]+\\}))?(,)?)");
233
234	const string _com = "\\/\\\\ select\\#[0-9]+\\ \\\\/\\ *";
235
236	const string _tok = "[a-zA-Z_ ]+";
237
238	const string _nnn = "\\{[0-9]+\\}\|[0-9]+";
239
240	const string _as = "\\ ?([Aa][Ss])\\ ?";
241
242	// ( _nnn ) ( _as ( _nnn ))?(,)? // can also match noting in between two {NNN}
243	const string _exp = "("+_nnn+")" + "("+_as+"("+_nnn+"))?(,)?";
244
245	// Matche: ( _com )? ( ( _tok )? ( _exp ) \| ( _tok ) )
246	boost::regex reg("("+_com+")?" + "(" + "("+_tok+")?"+"("+_exp+")" + "\|" + "("+_tok+")" + ")");
247
248	boost::smatch match;
249	while (boost::regex_search(str, match, reg, boost::regex_constants::format_first_only))
250	{
251
252	const auto &com = match.str(1); // comment
253	const auto &tok1 = Tools::Trim(match.str(3)); // token with expression
254	const auto &arg1 = match.str(5); // argument 1
255	const auto &as = match.str(7); // as
256	const auto &arg2 = match.str(8); // argument 2
257	const auto &comma = match.str(9); // comma
258	const auto &tok2 = Tools::Trim(match.str(10)); // token without expression
259
260	if (!com.empty())
261	cout << setw(indent) << ' ' << "\033[34m" << com << "\033[0m" << '\n';
262
263	if (!tok1.empty())
264	cout << setw(indent) << ' ' << "\033[32m" << tok1 << "\033[0m" << '\n';
265	if (!tok2.empty())
266	cout << setw(indent) << ' ' << "\033[32m" << tok2 << "\033[0m" << '\n';
267
268	if (!arg1.empty())
269	{
270	expression(arg1, indent+4);
271
272	if (!as.empty())
273	cout << " \033[33m" << as << "\033[0m ";
274
275	if (!arg2.empty())
276	expression(arg2);
277
278	if (!comma.empty())
279	cout << ',';
280
281	cout << '\n';
282	}
283
284	str = str.substr(match.position()+match.length());
285	}
286	}
287
288
289	ExplainParser(const string &_sql) : sql(_sql)
290	{
291	// substitute all strings
292	sql = substitute(sql, "'[^']*'");
293
294	// substitute all escaped sequences (`something`.`something-else`)
295	sql = substitute(sql, "`[^`]`(\\.`[^`]`)*");
296
297	// substitute all paranthesis
298	sql = substitute(sql, "[a-zA-Z0-9_]\\([^\\(\\)]\\)");
299
300	//cout << sql << "\n\n";
301	find_tokens(sql);
302	cout << endl;
303	}
304	};
305
306	// Remove queries...
307	void format(string sql)
308	{
309	ExplainParser p(sql);
310
311	/*
312
313	SELECT
314	[ALL \| DISTINCT \| DISTINCTROW ]
315	[HIGH_PRIORITY]
316	[STRAIGHT_JOIN]
317	[SQL_SMALL_RESULT] [SQL_BIG_RESULT] [SQL_BUFFER_RESULT]
318	[SQL_CACHE \| SQL_NO_CACHE] [SQL_CALC_FOUND_ROWS]
319	select_expr [, select_expr ...]
320	[FROM table_references
321	[PARTITION partition_list]
322	[WHERE where_condition]
323	[GROUP BY {col_name \| expr \| position}, ... [WITH ROLLUP]]
324	[HAVING where_condition]
325	[WINDOW window_name AS (window_spec)
326	[, window_name AS (window_spec)] ...]
327	[ORDER BY {col_name \| expr \| position}
328	[ASC \| DESC], ... [WITH ROLLUP]]
329	[LIMIT {[offset,] row_count \| row_count OFFSET offset}]
330	[INTO OUTFILE 'file_name'
331	[CHARACTER SET charset_name]
332	export_options
333	\| INTO DUMPFILE 'file_name'
334	\| INTO var_name [, var_name]]
335	[FOR {UPDATE \| SHARE} [OF tbl_name [, tbl_name] ...] [NOWAIT \| SKIP LOCKED]
336	\| LOCK IN SHARE MODE]]
337	*/
338
339	/*
340	table_references:
341	escaped_table_reference [, escaped_table_reference] ...
342
343	escaped_table_reference:
344	table_reference
345	\| { OJ table_reference }
346
347	table_reference:
348	table_factor
349	\| join_table
350
351	table_factor:
352	tbl_name [PARTITION (partition_names)]
353	[[AS] alias] [index_hint_list]
354	\| table_subquery [AS] alias [(col_list)]
355	\| ( table_references )
356
357	join_table:
358	table_reference [INNER \| CROSS] JOIN table_factor [join_condition]
359	\| table_reference STRAIGHT_JOIN table_factor
360	\| table_reference STRAIGHT_JOIN table_factor ON conditional_expr
361	\| table_reference {LEFT\|RIGHT} [OUTER] JOIN table_reference join_condition
362	\| table_reference NATURAL [INNER \| {LEFT\|RIGHT} [OUTER]] JOIN table_factor
363
364	join_condition:
365	ON conditional_expr
366	\| USING (column_list)
367
368	index_hint_list:
369	index_hint [, index_hint] ...
370
371	index_hint:
372	USE {INDEX\|KEY}
373	[FOR {JOIN\|ORDER BY\|GROUP BY}] ([index_list])
374	\| IGNORE {INDEX\|KEY}
375	[FOR {JOIN\|ORDER BY\|GROUP BY}] (index_list)
376	\| FORCE {INDEX\|KEY}
377	[FOR {JOIN\|ORDER BY\|GROUP BY}] (index_list)
378
379	index_list:
380	index_name [, index_name] ...
381	*/
382
383	}
384
385	int finish(Database &connection, const uint16_t &verbose, const bool &profiling, const bool &print_connection)
386	{
387	if (verbose>0)
388	{
389	try
390	{
391	const auto resw =
392	connection.query("SHOW WARNINGS").store();
393
394	if (resw.num_rows()>0)
395	cout << "\n" << resw.num_rows() << " Warning(s) issued:\n\n";
396
397	for (size_t i=0; i<resw.num_rows(); i++)
398	{
399	const mysqlpp::Row &roww = resw[i];
400
401	cout << roww["Level"] << '[' << roww["Code"] << "]: ";
402	cout << roww["Message"] << '\n';
403	}
404	cout << endl;
405
406	}
407	catch (const exception &e)
408	{
409	cerr << "\nSHOW WARNINGS\n\n";
410	cerr << "SQL query failed:\n" << e.what() << endl;
411	return 1;
412	}
413	}
414
415	if (profiling)
416	{
417	try
418	{
419	const auto N =
420	connection.query("SHOW PROFILES").store().num_rows();
421
422	const auto resp =
423	connection.query("SHOW PROFILE ALL FOR QUERY "+to_string(verbose?N-1:N)).store();
424
425	cout << '\n';
426	cout << left;
427	cout << setw(26) << "Status" << ' ';
428	cout << right;
429	cout << setw(11) << "Duration" << ' ';
430	cout << setw(11) << "CPU User" << ' ';
431	cout << setw(11) << "CPU System" << '\n';
432	cout << "--------------------------------------------------------------\n";
433	for (size_t i=0; i<resp.num_rows(); i++)
434	{
435	const mysqlpp::Row &rowp = resp[i];
436
437	cout << left;
438	cout << setw(26) << rowp["Status"] << ' ';
439	cout << right;
440	cout << setw(11) << rowp["Duration"] << ' ';
441	cout << setw(11) << rowp["CPU_user"] << ' ';
442	cout << setw(11) << rowp["CPU_system"] << '\n';
443	}
444	cout << "--------------------------------------------------------------\n";
445	cout << endl;
446	}
447	catch (const exception &e)
448	{
449	cerr << "\nSHOW PROFILE ALL\n\n";
450	cerr << "SQL query failed:\n" << e.what() << '\n' <<endl;
451	return 2;
452	}
453	}
454
455	if (print_connection)
456	{
457	try
458	{
459	// Exchange _send and _received as it is the view of the server
460	const auto &res1 = connection.query("SHOW STATUS LIKE 'Bytes_%'").store();
461	cout << left << setw(16) << res1[1]["Variable_name"] << ' ' << Tools::Scientific(res1[0]["Value"]) << endl;
462	cout << left << setw(16) << res1[0]["Variable_name"] << ' ' << Tools::Scientific(res1[1]["Value"]) << endl;
463	cout << endl;
464	}
465	catch (const exception &e)
466	{
467	cerr << "\nSHOW STATUS LIKE 'Bytes_%'\n\n";
468	cerr << "SQL query failed:\n" << e.what() << endl;
469	return 3;
470	}
471	}
472
473	if (verbose>0)
474	cout << "Success!\n" << endl;
475	return 0;
476
477	}
478
479	int main(int argc, const char* argv[])
480	{
481	Time start;
482
483	gROOT->SetBatch();
484
485	Configuration conf(argv[0]);
486	conf.SetPrintUsage(PrintUsage);
487	SetupConfiguration(conf);
488
489	if (!conf.DoParse(argc, argv))
490	return 127;
491
492	// ----------------------------- Evaluate options --------------------------
493	const string uri = conf.Get<string>("uri");
494	const string out = conf.Get<string>("out");
495	const string file = conf.Get<string>("file");
496	const string tree = conf.Get<string>("tree");
497	const bool force = conf.Get<bool>("force");
498	const bool ignorenull = conf.Get<bool>("ignore-null");
499	const bool update = conf.Get<bool>("update");
500	const bool display = conf.Get<bool>("display");
501	const string write = conf.Get<string>("write");
502	const bool noout = conf.Get<bool>("null");
503	const bool nofill = conf.Get<bool>("no-fill");
504	const bool explain = conf.Get<bool>("explain");
505	const bool profiling = conf.Get<bool>("profiling");
506	const uint16_t verbose = conf.Get<uint16_t>("verbose");
507	const uint16_t compression = conf.Get<uint16_t>("compression");
508	const string delimiter = conf.Has("delimiter") ? conf.Get<string>("delimiter") : "\t";
509
510	const bool copy_all = conf.Get<bool>("copy-all");
511	const bool copy_shabang = conf.Get<bool>("copy-shabang");
512	const bool copy_header = copy_all \|\| conf.Get<bool>("copy-header");
513	const bool copy_query = copy_all \|\| conf.Get<bool>("copy-query");
514	const bool copy_comments = copy_all \|\| conf.Get<bool>("copy-comments");
515
516	const vector<string> _ignore = conf.Vec<string>("ignore");
517	const bool print_connection = conf.Get<bool>("print-connection");
518	//const vector<Map> mymap = conf.Vec<Map>("map");
519
520	// ----------------------- Setup splitting ---------------------------------
521
522	vector<uint16_t> split_seq = conf.Vec<uint16_t>("split-sequence");
523	vector<double> split_quant = conf.Vec<double>("split-quantile");
524
525	if (!split_seq.empty() && !split_quant.empty())
526	throw runtime_error("Only splitting by --split-sequence or --split-quantile is allowed.");
527
528	const size_t num_split = ::max(split_seq.size(), split_quant.size()+1);
529
530	map<size_t, size_t> split_lut;
531	for (size_t i=0; i<split_seq.size(); i++)
532	{
533	const size_t sz = split_lut.size();
534	for (size_t j=0; j<split_seq[i]; j++)
535	split_lut.emplace(j+sz, i);
536	}
537
538	for (size_t i=0; i<split_quant.size(); i++)
539	if (split_quant[i]<0 \|\| split_quant[i]>=1)
540	throw runtime_error("Splitting quantiles must be in the range [0;1)");
541
542	for (size_t i=1; i<split_quant.size(); i++)
543	{
544	if (split_quant[i]<=split_quant[i-1])
545	throw runtime_error("Splitting quantiles must be in increasing order.");
546	}
547
548	// -------------------------------------------------------------------------
549
550	const auto vars = conf.GetWildcardOptions("var.*");
551
552	vector<string> variables;
553	for (auto var=vars.cbegin(); var!=vars.cend(); var++)
554	variables.emplace_back('@'+var->substr(4)+":="+Tools::Trim(conf.Get<string>(*var)));
555
556	// -------------------------------------------------------------------------
557
558	if (verbose>0)
559	{
560	cout << "\n------------------------ Rootify SQL -------------------------" << endl;
561	cout << "Start Time: " << Time::sql << Time(Time::local) << endl;
562	}
563
564	string query = conf.Get<string>("query");
565	if (query.empty())
566	{
567	if (verbose>0)
568	cout << "Reading query from file '" << file << "'." << endl;
569
570	ifstream fin(file);
571	if (!fin)
572	{
573	cerr << "Could not open query in '" << file << "': " << strerror(errno) << endl;
574	return 4;
575	}
576
577	getline(fin, query, (char)fin.eof());
578	}
579
580	if (query.empty())
581	{
582	cerr << "No query specified." << endl;
583	return 5;
584	}
585
586	// -------------------------------------------------------------------------
587
588	map<string, vector<string>> envs;
589
590	const auto &envs1 = conf.GetWildcardOptions("env.*");
591	for (auto env=envs1.cbegin(); env!=envs1.cend(); env++)
592	envs[env->substr(4)] = conf.Vec<string>(*env);
593
594	const auto &envs2 = conf.GetWildcardOptions("list.*");
595	for (auto env=envs2.cbegin(); env!=envs2.cend(); env++)
596	{
597	const string fname = conf.Get<string>(*env);
598	const string &ident = env->substr(5);
599
600	ifstream fin(fname);
601	if (!fin)
602	{
603	cerr << "Could not open environment in '" << fname << "' for ${" << ident << "}: " << strerror(errno) << endl;
604	return 6;
605	}
606	for (string line; getline(fin, line); )
607	{
608	const auto &l = Tools::Trim(line);
609	if (!l.empty() && l[0]!='#')
610	envs[ident].push_back(line);
611	}
612
613	if (verbose>0)
614	cout << "Found " << envs[ident].size() << " list element(s) for ${" << ident << "}" << endl;
615	}
616
617	for (auto env=envs.cbegin(); env!=envs.cend(); env++)
618	{
619	boost::regex rexpr("\\$(\\{"+env->first+"\\}\|"+env->first+"\\b)");
620	query = boost::regex_replace(query, rexpr, boost::join(env->second, ", "));
621	}
622
623	// -------------------------- Check for file permssion ---------------------
624	// Strictly speaking, checking for write permission and existance is not necessary,
625	// but it is convenient that the user does not find out that it failed after
626	// waiting long for the query result
627	//
628
629	// I am using root here instead of boost to be
630	// consistent with the access pattern by TFile
631	TString path(noout?"/dev/null":out.c_str());
632	gSystem->ExpandPathName(path);
633
634	if (!noout)
635	{
636	FileStat_t stat;
637	const Int_t exist = !gSystem->GetPathInfo(path, stat);
638	const Bool_t _write = !gSystem->AccessPathName(path, kWritePermission) && R_ISREG(stat.fMode);
639
640	if ((update && !exist) \|\| (update && exist && !_write) \|\| (force && exist && !_write))
641	{
642	cerr << "File '" << path << "' is not writable." << endl;
643	return 7;
644	}
645
646	if (!update && !force && exist)
647	{
648	cerr << "File '" << path << "' already exists." << endl;
649	return 8;
650	}
651	}
652
653	Time start2;
654
655	// --------------------------- Connect to database -------------------------------------------------
656
657	if (*query.rbegin()!='\n')
658	query += '\n';
659
660	if (verbose>0)
661	{
662	cout << "Connecting to database...\n";
663	cout << "Client Version: " << mysqlpp::Connection().client_version() << endl;
664	}
665
666	Database connection(uri); // Keep alive while fetching rows
667
668	if (verbose>0)
669	cout << "Server Version: " << connection.server_version() << endl;
670
671	if (print_connection)
672	{
673	try
674	{
675	const auto &res1 = connection.query("SHOW STATUS LIKE 'Compression'").store();
676	cout << "Compression of database connection is " << string(res1[0][1]) << endl;
677
678	const auto &res2 = connection.query("SHOW STATUS LIKE 'Ssl_cipher'").store();
679	cout << "Connection to databases is " << (string(res2[0][1]).empty()?"UNENCRYPTED":"ENCRYPTED ("+string(res2[0][1])+")") << endl;
680	}
681	catch (const exception &e)
682	{
683	cerr << "\nSHOW STATUS LIKE 'Compression'\n\n";
684	cerr << "SQL query failed:\n" << e.what() << endl;
685	return 9;
686	}
687	}
688
689	try
690	{
691	if (profiling)
692	connection.query("SET PROFILING=1").execute();
693	}
694	catch (const exception &e)
695	{
696	cerr << "\nSET profiling=1\n\n";
697	cerr << "SQL query failed:\n" << e.what() << endl;
698	return 10;
699	}
700
701	// -------------------------- Set user defined variables -------------------
702	if (variables.size()>0)
703	{
704	if (verbose>0)
705	cout << "Setting user defined variables..." << endl;
706
707	const string varset =
708	"SET\n "+boost::algorithm::join(variables, ",\n ");
709
710	try
711	{
712	connection.query(varset).execute();
713	}
714	catch (const exception &e)
715	{
716	cerr << '\n' << varset << "\n\n";
717	cerr << "SQL query failed:\n" << e.what() << endl;
718	return 11;
719	}
720
721	if (verbose>2)
722	cout << '\n' << varset << '\n' << endl;
723	}
724
725	// ------------------------- Explain query if requested --------------------
726
727	if (explain)
728	{
729	try
730	{
731	const auto res0 =
732	connection.query("EXPLAIN FORMAT=JSON "+query).store();
733
734	cout << res0[0][0] << endl;
735	cout << endl;
736
737	const mysqlpp::StoreQueryResult res1 =
738	connection.query("EXPLAIN "+query).store();
739
740	for (size_t i=0; i<res1.num_rows(); i++)
741	{
742	const mysqlpp::Row &row = res1[i];
743
744	cout << "\nid : " << row["id"];
745	cout << "\nselect type : " << row["select_type"];
746
747	if (!row["table"].is_null())
748	cout << "\ntable : " << row["table"];
749
750	if (!row["partitions"].is_null())
751	cout << "\npartitions : " << row["partitions"];
752
753	if (!row["key"].is_null())
754	cout << "\nselected key : " << row["key"] << " [len=" << row["key_len"] << "] out of (" << row["possible_keys"] << ")";
755
756	if (!row["type"].is_null())
757	cout << "\njoin type : " << row["type"];
758
759	//if (!row["possible_keys"].is_null())
760	// cout << "\npossible_keys: " << row["possible_keys"];
761
762	//if (!row["key_len"].is_null())
763	// cout << "\nkey_len : " << row["key_len"];
764
765	if (!row["ref"].is_null())
766	cout << "\nref : (" << row["ref"] << ") compared to the index";
767
768	if (!row["rows"].is_null())
769	cout << "\nrows : " << row["rows"];
770
771	if (!row["filtered"].is_null())
772	cout << "\nfiltered : " << row["filtered"];
773
774	if (!row["extra"].is_null())
775	cout << "\nExtra : " << row["extra"];
776
777	cout << endl;
778	}
779
780	cout << endl;
781
782	const mysqlpp::StoreQueryResult res2 =
783	connection.query("SHOW WARNINGS").store();
784
785	for (size_t i=0; i<res2.num_rows(); i++)
786	{
787	const mysqlpp::Row &row = res2[i];
788
789	// 1003 //
790	cout << row["Level"] << '[' << row["Code"] << "]:\n";
791	if (uint32_t(row["Code"])==1003)
792	format(row["Message"].c_str());
793	else
794	cout << row["Message"] << '\n' << endl;
795
796	}
797
798	}
799	catch (const exception &e)
800	{
801	cerr << '\n' << query << "\n\n";
802	cerr << "SQL query failed:\n" << e.what() << endl;
803	return 12;
804	}
805
806	return 0;
807	}
808
809	// -------------------------- Request data from database -------------------
810	if (verbose>0)
811	cout << "Requesting data... please be patient!" << endl;
812
813	if (verbose>2)
814	cout << '\n' << query << endl;
815
816	const mysqlpp::UseQueryResult res =
817	connection.query(query).use();
818
819	// -------------------------------------------------------------------------
820
821	if (verbose>0)
822	{
823	cout << "Opening file '" << path << "' [compression=" << compression << "]...\n";
824	cout << "Writing data to tree '" << tree << "'" << (nofill?" (--skipped--)":"") << endl;
825	if (num_split)
826	{
827	cout << "Splitting configured " << (split_seq.empty()?"randomly":"in sequence") << " into " << num_split << " branches." << endl;
828	if (!split_quant.empty())
829	cout << "Seed value configured as " << conf.Get<uint64_t>("seed") << "." << endl;
830	}
831	}
832
833	// ----------------------------- Open output file --------------------------
834	TFile tfile(path, update?"UPDATE":(force?"RECREATE":"CREATE"), "Rootify SQL", compression);
835	if (tfile.IsZombie())
836	return 13;
837
838	// -------------------------------------------------------------------------
839
840	// get the first row to get the field description
841	mysqlpp::Row row = res.fetch_row();
842	if (!row)
843	{
844	cerr << "Empty set returned... nothing to write." << endl;
845	return finish(connection, verbose, profiling, print_connection)+20;
846	}
847
848	if (verbose>0)
849	cout << "Trying to setup " << row.size() << " branches..." << endl;
850
851	if (verbose>1)
852	cout << endl;
853
854	const mysqlpp::FieldNames &l = *row.field_list().list;
855
856	vector<double> buf(l.size());
857	vector<uint8_t> typ(l.size(),'n'); // n=number [double], d is used for DateTime
858
859	UInt_t cols = 0;
860
861	// IMPLEMENT FILE SPLITTING!
862	// OpenFile(tree, query)
863	// SetupColumns
864	// WriteRow
865	// CloseFile
866
867	// Ratio[3]: 50%, 20%, 30%
868	// File[x3]: root, cout, fout
869
870
871	// -------------------- Configure branches of TTree ------------------------
872	vector<TTree*> ttree;
873
874	if (num_split==0)
875	ttree.emplace_back(new TTree(tree.c_str(), query.c_str()));
876	else
877	for (size_t i=0; i<num_split; i++)
878	ttree.emplace_back(new TTree((tree+"["+to_string(i)+"]").c_str(), query.c_str()));
879
880	size_t skipat = 0;
881	size_t skipreg = 0;
882	for (size_t i=0; i<l.size(); i++)
883	{
884	const string t = row[i].type().sql_name();
885
886	if (t.find("DATETIME")!=string::npos)
887	typ[i] = 'd';
888	else
889	if (t.find("DATE")!=string::npos)
890	typ[i] = 'D';
891	else
892	if (t.find("TIME")!=string::npos)
893	typ[i] = 'T';
894	else
895	if (t.find("VARCHAR")!=string::npos)
896	typ[i] = 'V';
897	else
898	if (t.find("CHAR")!=string::npos)
899	typ[i] = 'C';
900
901	bool found = false;
902	for (auto pattern=_ignore.cbegin(); pattern!=_ignore.cend(); pattern++)
903	{
904	if (boost::regex_match(l[i], boost::regex(*pattern)))
905	{
906	found = true;
907	typ[i] = '-';
908	skipreg++;
909	break;
910	}
911	}
912
913	if (l[i][0]=='@')
914	{
915	typ[i] = '@';
916	skipat++;
917	}
918
919	const bool use = l[i][0]!='@' && typ[i]!='V' && typ[i]!='C' && !found;
920
921	if (verbose>1)
922	cout << (use?" + ":" - ") << l[i].c_str() << " [" << t << "] {" << typ[i] << "}\n";
923
924	if (use)
925	{
926	// string name = l[i];
927	// for (const auto &m: mymap)
928	// name = boost::regex_replace(l[i], boost::regex(m.first), m.second);
929
930	for (auto it=ttree.begin(); it!=ttree.end(); it++)
931	it[0]->Branch(l[i].c_str(), buf.data()+i);
932	cols++;
933	}
934	}
935	// -------------------------------------------------------------------------
936
937	if (verbose>1)
938	cout << endl;
939	if (verbose>0)
940	{
941	if (skipreg)
942	cout << skipreg << " branches skipped due to ignore list." << endl;
943	if (skipat)
944	cout << skipat << " branches skipped due to name starting with @." << endl;
945	cout << "Configured " << cols << " branches.\nFilling branches..." << endl;
946	}
947
948	// ------------------------- Open the ascii files --------------------------
949
950	vector<ofstream> fout;
951	if (!write.empty())
952	{
953	vector<string> names;
954	if (num_split==0)
955	names.emplace_back(write);
956	else
957	for (size_t i=0; i<num_split; i++)
958	names.emplace_back(write+"-"+to_string(i));
959
960	for (auto it=names.cbegin(); it!=names.cend(); it++)
961	{
962	fout.emplace_back(*it);
963	if (!*fout.rbegin())
964	cout << "WARNING: Writing to '" << write << "' failed: " << strerror(errno) << endl;
965	}
966	}
967
968	// ----------------------- Prepare the ascii comment -----------------------
969
970	string contents;
971
972	istringstream istr(query);
973	size_t line = 0;
974	bool header = true;
975	while (istr)
976	{
977	string ibuf;
978	getline(istr, ibuf);
979	const string sbuf = Tools::Trim(ibuf);
980
981	const bool shabang = line==0 && ibuf[0]=='#' && ibuf[1]=='!';
982	const bool comment = sbuf[0]=='#' && !shabang;
983	const bool isquery = !shabang && !comment;
984	if (isquery)
985	header = false;
986
987	line++;
988
989	if ((copy_shabang && shabang) \|\|
990	(copy_header && comment && header) \|\|
991	(copy_query && isquery) \|\|
992	(copy_comments && comment && !header))
993	contents += '#' + ibuf + '\n';
994	}
995
996	// ----------------------- Write the ascii headers -------------------------
997
998	ostringstream htxt;
999	if (display \|\| !fout.empty())
1000	htxt << row.field_list(delimiter.c_str());
1001
1002	if (display)
1003	{
1004	cout << endl;
1005	cout << contents << endl;
1006	cout << "# " << htxt.str() << endl;
1007	}
1008	for (auto ff=fout.begin(); ff!=fout.end(); ff++)
1009	{
1010	*ff << contents;
1011	*ff << "# " << htxt.str() << endl;
1012	}
1013
1014	// ---------------------- Fill TTree with DB data --------------------------
1015
1016	const uniform_real_distribution<double> distribution(0,1);
1017	mt19937_64 generator;
1018	generator.seed(conf.Get<uint64_t>("seed"));
1019	auto rndm = bind(distribution, generator);
1020
1021	size_t count = 0;
1022	size_t skip = 0;
1023	do
1024	{
1025	size_t index = 0;
1026	if (!split_lut.empty())
1027	index = split_lut[count % split_lut.size()];
1028	if (!split_quant.empty())
1029	{
1030	const float r = rndm();
1031	for (; r>=split_quant[index]; index++)
1032	if (index==split_quant.size())
1033	break;
1034	}
1035
1036	count++;
1037
1038	ostringstream rtxt;
1039	if (display \|\| !fout.empty())
1040	rtxt << row.value_list(delimiter.c_str(), mysqlpp::do_nothing);
1041
1042	if (display)
1043	cout << rtxt.str() << '\n';
1044	if (!fout.empty())
1045	fout[index] << rtxt.str() << '\n';
1046
1047	size_t idx=0;
1048	for (auto col=row.begin(); col!=row.end(); col++, idx++)
1049	{
1050	if (!ignorenull && col->is_null())
1051	{
1052	skip++;
1053	break;
1054	}
1055
1056	switch (typ[idx])
1057	{
1058	case 'd':
1059	buf[idx] = time_t((mysqlpp::DateTime)(*col));
1060	break;
1061
1062	case 'D':
1063	buf[idx] = time_t((mysqlpp::Date)(*col));
1064	break;
1065
1066	case 'T':
1067	buf[idx] = time_t((mysqlpp::Time)(*col));
1068	break;
1069
1070	case 'V':
1071	case 'C':
1072	case '-':
1073	case '@':
1074	break;
1075
1076	default:
1077	buf[idx] = atof(col->c_str());
1078	}
1079	}
1080
1081	if (idx==row.size() && !nofill)
1082	ttree[index]->Fill();
1083
1084	row = res.fetch_row();
1085
1086
1087	} while (row);
1088
1089	// -------------------------------------------------------------------------
1090
1091	if (display)
1092	cout << '\n' << endl;
1093
1094	if (verbose>0)
1095	{
1096	cout << count << " rows fetched." << endl;
1097	if (skip>0)
1098	cout << skip << " rows skipped due to NULL field." << endl;
1099
1100	for (size_t i=0; i<ttree.size(); i++)
1101	cout << ttree[i]->GetEntries() << " rows filled into tree #" << i << "." << endl;
1102	}
1103
1104	for (auto it=ttree.begin(); it!=ttree.end(); it++)
1105	(*it)->Write();
1106	tfile.Close();
1107
1108	if (verbose>0)
1109	{
1110	const auto sec = Time().UnixTime()-start.UnixTime();
1111
1112	cout << Tools::Scientific(tfile.GetSize()) << "B written to disk.\n";
1113	cout << "File closed.\n";
1114	cout << "Execution time: " << sec << "s ";
1115	cout << "(" << Tools::Fractional(sec/count) << "s/row)\n";
1116	cout << "--------------------------------------------------------------" << endl;
1117	}
1118
1119	return finish(connection, verbose, profiling, print_connection);
1120	}

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