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Commite5487f6

Browse files
committed
Make walsender options order-independent
While doing this, also move base backup options intoa struct instead of increasing the number of parametersto multiple functions for each new option.
1 parent39e911e commite5487f6

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5 files changed

+109
-43
lines changed

5 files changed

+109
-43
lines changed

‎src/backend/replication/basebackup.c‎

Lines changed: 72 additions & 11 deletions
Original file line numberDiff line numberDiff line change
@@ -32,6 +32,14 @@
3232
#include"utils/memutils.h"
3333
#include"utils/ps_status.h"
3434

35+
typedefstruct
36+
{
37+
constchar*label;
38+
boolprogress;
39+
boolfastcheckpoint;
40+
}basebackup_options;
41+
42+
3543
staticint64sendDir(char*path,intbasepathlen,boolsizeonly);
3644
staticvoidsendFile(char*path,intbasepathlen,structstat*statbuf);
3745
staticvoid_tarWriteHeader(char*filename,char*linktarget,
@@ -40,7 +48,8 @@ static void send_int8_string(StringInfoData *buf, int64 intval);
4048
staticvoidSendBackupHeader(List*tablespaces);
4149
staticvoidSendBackupDirectory(char*location,char*spcoid);
4250
staticvoidbase_backup_cleanup(intcode,Datumarg);
43-
staticvoidperform_base_backup(constchar*backup_label,boolprogress,DIR*tblspcdir,boolfastcheckpoint);
51+
staticvoidperform_base_backup(basebackup_options*opt,DIR*tblspcdir);
52+
staticvoidparse_basebackup_options(List*options,basebackup_options*opt);
4453

4554
typedefstruct
4655
{
@@ -67,9 +76,9 @@ base_backup_cleanup(int code, Datum arg)
6776
* clobbered by longjmp" from stupider versions of gcc.
6877
*/
6978
staticvoid
70-
perform_base_backup(constchar*backup_label,boolprogress,DIR*tblspcdir,boolfastcheckpoint)
79+
perform_base_backup(basebackup_options*opt,DIR*tblspcdir)
7180
{
72-
do_pg_start_backup(backup_label,fastcheckpoint);
81+
do_pg_start_backup(opt->label,opt->fastcheckpoint);
7382

7483
PG_ENSURE_ERROR_CLEANUP(base_backup_cleanup, (Datum)0);
7584
{
@@ -81,7 +90,7 @@ perform_base_backup(const char *backup_label, bool progress, DIR *tblspcdir, boo
8190

8291
/* Add a node for the base directory */
8392
ti=palloc0(sizeof(tablespaceinfo));
84-
ti->size=progress ?sendDir(".",1, true) :-1;
93+
ti->size=opt->progress ?sendDir(".",1, true) :-1;
8594
tablespaces=lappend(tablespaces,ti);
8695

8796
/* Collect information about all tablespaces */
@@ -107,7 +116,7 @@ perform_base_backup(const char *backup_label, bool progress, DIR *tblspcdir, boo
107116
ti=palloc(sizeof(tablespaceinfo));
108117
ti->oid=pstrdup(de->d_name);
109118
ti->path=pstrdup(linkpath);
110-
ti->size=progress ?sendDir(linkpath,strlen(linkpath), true) :-1;
119+
ti->size=opt->progress ?sendDir(linkpath,strlen(linkpath), true) :-1;
111120
tablespaces=lappend(tablespaces,ti);
112121
}
113122

@@ -128,18 +137,73 @@ perform_base_backup(const char *backup_label, bool progress, DIR *tblspcdir, boo
128137
do_pg_stop_backup();
129138
}
130139

140+
/*
141+
* Parse the base backup options passed down by the parser
142+
*/
143+
staticvoid
144+
parse_basebackup_options(List*options,basebackup_options*opt)
145+
{
146+
ListCell*lopt;
147+
boolo_label= false;
148+
boolo_progress= false;
149+
boolo_fast= false;
150+
151+
MemSet(opt,0,sizeof(opt));
152+
foreach(lopt,options)
153+
{
154+
DefElem*defel= (DefElem*)lfirst(lopt);
155+
156+
if (strcmp(defel->defname,"label")==0)
157+
{
158+
if (o_label)
159+
ereport(ERROR,
160+
(errcode(ERRCODE_SYNTAX_ERROR),
161+
errmsg("duplicate option \"%s\"",defel->defname)));
162+
opt->label=strVal(defel->arg);
163+
o_label= true;
164+
}
165+
elseif (strcmp(defel->defname,"progress")==0)
166+
{
167+
if (o_progress)
168+
ereport(ERROR,
169+
(errcode(ERRCODE_SYNTAX_ERROR),
170+
errmsg("duplicate option \"%s\"",defel->defname)));
171+
opt->progress= true;
172+
o_progress= true;
173+
}
174+
elseif (strcmp(defel->defname,"fast")==0)
175+
{
176+
if (o_fast)
177+
ereport(ERROR,
178+
(errcode(ERRCODE_SYNTAX_ERROR),
179+
errmsg("duplicate option \"%s\"",defel->defname)));
180+
opt->fastcheckpoint= true;
181+
o_fast= true;
182+
}
183+
else
184+
elog(ERROR,"option \"%s\" not recognized",
185+
defel->defname);
186+
}
187+
if (opt->label==NULL)
188+
opt->label="base backup";
189+
}
190+
191+
131192
/*
132193
* SendBaseBackup() - send a complete base backup.
133194
*
134195
* The function will take care of running pg_start_backup() and
135196
* pg_stop_backup() for the user.
136197
*/
137198
void
138-
SendBaseBackup(constchar*backup_label,boolprogress,boolfastcheckpoint)
199+
SendBaseBackup(BaseBackupCmd*cmd)
139200
{
140201
DIR*dir;
141202
MemoryContextbackup_context;
142203
MemoryContextold_context;
204+
basebackup_optionsopt;
205+
206+
parse_basebackup_options(cmd->options,&opt);
143207

144208
backup_context=AllocSetContextCreate(CurrentMemoryContext,
145209
"Streaming base backup context",
@@ -150,15 +214,12 @@ SendBaseBackup(const char *backup_label, bool progress, bool fastcheckpoint)
150214

151215
WalSndSetState(WALSNDSTATE_BACKUP);
152216

153-
if (backup_label==NULL)
154-
backup_label="base backup";
155-
156217
if (update_process_title)
157218
{
158219
charactivitymsg[50];
159220

160221
snprintf(activitymsg,sizeof(activitymsg),"sending backup \"%s\"",
161-
backup_label);
222+
opt.label);
162223
set_ps_display(activitymsg, false);
163224
}
164225

@@ -168,7 +229,7 @@ SendBaseBackup(const char *backup_label, bool progress, bool fastcheckpoint)
168229
ereport(ERROR,
169230
(errmsg("unable to open directory pg_tblspc: %m")));
170231

171-
perform_base_backup(backup_label,progress,dir,fastcheckpoint);
232+
perform_base_backup(&opt,dir);
172233

173234
FreeDir(dir);
174235

‎src/backend/replication/repl_gram.y‎

Lines changed: 27 additions & 18 deletions
Original file line numberDiff line numberDiff line change
@@ -15,6 +15,8 @@
1515

1616
#include"postgres.h"
1717

18+
#include"nodes/makefuncs.h"
19+
#include"nodes/parsenodes.h"
1820
#include"replication/replnodes.h"
1921
#include"replication/walsender.h"
2022

@@ -55,6 +57,8 @@ Node *replication_parse_result;
5557

5658
XLogRecPtrrecptr;
5759
Node*node;
60+
List*list;
61+
DefElem*defelt;
5862
}
5963

6064
/* Non-keyword tokens*/
@@ -71,9 +75,8 @@ Node *replication_parse_result;
7175

7276
%type<node>command
7377
%type<node>base_backupstart_replicationidentify_system
74-
%type<boolval>opt_progressopt_fast
75-
%type<str>opt_label
76-
78+
%type<list>base_backup_opt_list
79+
%type<defelt>base_backup_opt
7780
%%
7881

7982
firstcmd:commandopt_semicolon
@@ -106,28 +109,34 @@ identify_system:
106109
* BASE_BACKUP [LABEL <label>] [PROGRESS] [FAST]
107110
*/
108111
base_backup:
109-
K_BASE_BACKUPopt_labelopt_progressopt_fast
112+
K_BASE_BACKUPbase_backup_opt_list
110113
{
111114
BaseBackupCmd *cmd = (BaseBackupCmd *) makeNode(BaseBackupCmd);
112-
113-
cmd->label =$2;
114-
cmd->progress =$3;
115-
cmd->fastcheckpoint =$4;
116-
115+
cmd->options =$2;
117116
$$ = (Node *) cmd;
118117
}
119118
;
120119

121-
opt_label:K_LABELSCONST {$$ =$2; }
122-
|/* EMPTY*/{$$ =NULL; }
123-
;
120+
base_backup_opt_list:base_backup_opt_listbase_backup_opt {$$ = lappend($1,$2); }
121+
|/* EMPTY*/ {$$ = NIL; }
122+
123+
base_backup_opt:
124+
K_LABELSCONST
125+
{
126+
$$ = makeDefElem("label",
127+
(Node *)makeString($2));
128+
}
129+
|K_PROGRESS
130+
{
131+
$$ = makeDefElem("progress",
132+
(Node *)makeInteger(TRUE));
133+
}
134+
|K_FAST
135+
{
136+
$$ = makeDefElem("fast",
137+
(Node *)makeInteger(TRUE));
138+
}
124139

125-
opt_progress:K_PROGRESS{$$ =true; }
126-
|/* EMPTY*/{$$ =false; }
127-
;
128-
opt_fast:K_FAST{$$ =true; }
129-
|/* EMPTY*/{$$ =false; }
130-
;
131140

132141
/*
133142
* START_REPLICATION %X/%X

‎src/backend/replication/walsender.c‎

Lines changed: 6 additions & 10 deletions
Original file line numberDiff line numberDiff line change
@@ -399,17 +399,13 @@ HandleReplicationCommand(const char *cmd_string)
399399
break;
400400

401401
caseT_BaseBackupCmd:
402-
{
403-
BaseBackupCmd*cmd= (BaseBackupCmd*)cmd_node;
404-
405-
SendBaseBackup(cmd->label,cmd->progress,cmd->fastcheckpoint);
402+
SendBaseBackup((BaseBackupCmd*)cmd_node);
406403

407-
/* Send CommandComplete and ReadyForQuery messages */
408-
EndCommand("SELECT",DestRemote);
409-
ReadyForQuery(DestRemote);
410-
/* ReadyForQuery did pq_flush for us */
411-
break;
412-
}
404+
/* Send CommandComplete and ReadyForQuery messages */
405+
EndCommand("SELECT",DestRemote);
406+
ReadyForQuery(DestRemote);
407+
/* ReadyForQuery did pq_flush for us */
408+
break;
413409

414410
default:
415411
ereport(FATAL,

‎src/include/replication/basebackup.h‎

Lines changed: 3 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -12,6 +12,8 @@
1212
#ifndef_BASEBACKUP_H
1313
#define_BASEBACKUP_H
1414

15-
externvoidSendBaseBackup(constchar*backup_label,boolprogress,boolfastcheckpoint);
15+
#include"replication/replnodes.h"
16+
17+
externvoidSendBaseBackup(BaseBackupCmd*cmd);
1618

1719
#endif/* _BASEBACKUP_H */

‎src/include/replication/replnodes.h‎

Lines changed: 1 addition & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -45,9 +45,7 @@ typedef struct IdentifySystemCmd
4545
typedefstructBaseBackupCmd
4646
{
4747
NodeTagtype;
48-
char*label;
49-
boolprogress;
50-
boolfastcheckpoint;
48+
List*options;
5149
}BaseBackupCmd;
5250

5351

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