xml_internal.h File Reference

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <crm/crm.h>

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Macros
#define	PCMK__XML_LOG_BASE(priority, dechunk, postemit, prefix, fmt, ap)
	Base for directing lib{xml2,xslt} log into standard libqb backend. More...
#define	PCMK__XP_MEMBER_NODE_CONFIG
#define	PCMK__XP_GUEST_NODE_CONFIG
#define	PCMK__XP_REMOTE_NODE_CONFIG
#define	PCMK__XP_REMOTE_NODE_STATUS

Enumerations
enum	pcmk__xml_artefact_ns { pcmk__xml_artefact_ns_legacy_rng = 1, pcmk__xml_artefact_ns_legacy_xslt, pcmk__xml_artefact_ns_base_rng, pcmk__xml_artefact_ns_base_xslt }
enum	xml_private_flags {   pcmk__xf_none = 0x0000, pcmk__xf_dirty = 0x0001, pcmk__xf_deleted = 0x0002, pcmk__xf_created = 0x0004,   pcmk__xf_modified = 0x0008, pcmk__xf_tracking = 0x0010, pcmk__xf_processed = 0x0020, pcmk__xf_skip = 0x0040,   pcmk__xf_moved = 0x0080, pcmk__xf_acl_enabled = 0x0100, pcmk__xf_acl_read = 0x0200, pcmk__xf_acl_write = 0x0400,   pcmk__xf_acl_deny = 0x0800, pcmk__xf_acl_create = 0x1000, pcmk__xf_acl_denied = 0x2000, pcmk__xf_lazy = 0x4000 }

Functions
void	pcmk__strip_xml_text (xmlNode *xml)
const char *	pcmk__xe_add_last_written (xmlNode *xe)
xmlNode *	pcmk__xe_match (const xmlNode *parent, const char *node_name, const char *attr_n, const char *attr_v)
void	pcmk__xe_remove_matching_attrs (xmlNode *element, bool(*match)(xmlAttrPtr, void *), void *user_data)
GString *	pcmk__element_xpath (const xmlNode *xml)
char *	pcmk__xml_artefact_root (enum pcmk__xml_artefact_ns ns)
char *	pcmk__xml_artefact_path (enum pcmk__xml_artefact_ns ns, const char *filespec)
void	pcmk__xe_set_propv (xmlNodePtr node, va_list pairs)
void	pcmk__xe_set_props (xmlNodePtr node,...) G_GNUC_NULL_TERMINATED
char *	pcmk__xpath_node_id (const char *xpath, const char *node)
void	pcmk__set_xml_doc_flag (xmlNode *xml, enum xml_private_flags flag)
int	pcmk__xe_foreach_child (xmlNode *xml, const char *child_element_name, int(*handler)(xmlNode *xml, void *userdata), void *userdata)

Macro Definition Documentation

PCMK__XML_LOG_BASE

#define PCMK__XML_LOG_BASE	(		priority,
			dechunk,
			postemit,
			prefix,
			fmt,
			ap
	)

Base for directing lib{xml2,xslt} log into standard libqb backend.

This macro implements the core of what can be needed for directing libxml2 or libxslt error messaging into standard, preconfigured libqb-backed log stream.

It's a bit unfortunate that libxml2 (and more sparsely, also libxslt) emits a single message by chunks (location is emitted separatedly from the message itself), so we have to take the effort to combine these chunks back to single message. Whether to do this or not is driven with dechunk toggle.

The form of a macro was chosen for implicit deriving of FILE, etc. and also because static dechunking buffer should be differentiated per library (here we assume different functions referring to this macro will not ever be using both at once), preferably also per-library context of use to avoid clashes altogether.

Note that we cannot use qb_logt, because callsite data have to be known at the moment of compilation, which it is not always the case – xml_log (and unfortunately there's no clear explanation of the fail to compile).

Also note that there's no explicit guard against said libraries producing never-newline-terminated chunks (which would just keep consuming memory), as it's quite improbable. Termination of the program in between the same-message chunks will raise a flag with valgrind and the likes, though.

And lastly, regarding how dechunking combines with other non-message parameters – for priority, most important running specification wins (possibly elevated to LOG_ERR in case of nonconformance with the newline-termination "protocol"), dechunk is expected to always be on once it was at the start, and the rest (postemit and prefix) are picked directly from the last chunk entry finalizing the message (also reasonable to always have it the same with all related entries).

Parameters

[in]	priority	Syslog priority for the message to be logged
[in]	dechunk	Whether to dechunk new-line terminated message
[in]	postemit	Code to be executed once message is sent out
[in]	prefix	How to prefix the message or NULL for raw passing
[in]	fmt	Format string as with printf-like functions
[in]	ap	Variable argument list to supplement fmt format string

Definition at line 67 of file xml_internal.h.

PCMK__XP_GUEST_NODE_CONFIG

#define PCMK__XP_GUEST_NODE_CONFIG

Value:

"//" XML_TAG_CIB "//" XML_CIB_TAG_CONFIGURATION "//" XML_CIB_TAG_RESOURCE \
    "//" XML_TAG_META_SETS "//" XML_CIB_TAG_NVPAIR \
    "[@name='" XML_RSC_ATTR_REMOTE_NODE "']"

Definition at line 134 of file xml_internal.h.

PCMK__XP_MEMBER_NODE_CONFIG

#define PCMK__XP_MEMBER_NODE_CONFIG

Value:

"//" XML_TAG_CIB "/" XML_CIB_TAG_CONFIGURATION "/" XML_CIB_TAG_NODES \
    "/" XML_CIB_TAG_NODE "[not(@type) or @type='member']"

Definition at line 129 of file xml_internal.h.

PCMK__XP_REMOTE_NODE_CONFIG

#define PCMK__XP_REMOTE_NODE_CONFIG

Value:

"//" XML_TAG_CIB "//" XML_CIB_TAG_CONFIGURATION "//" XML_CIB_TAG_RESOURCE \
    "[@type='remote'][@provider='pacemaker']"

Definition at line 140 of file xml_internal.h.

PCMK__XP_REMOTE_NODE_STATUS

#define PCMK__XP_REMOTE_NODE_STATUS

Value:

"//" XML_TAG_CIB "//" XML_CIB_TAG_STATUS "//" XML_CIB_TAG_STATE \
    "[@" XML_NODE_IS_REMOTE "='true']"

Definition at line 145 of file xml_internal.h.

Enumeration Type Documentation

pcmk__xml_artefact_ns

enum pcmk__xml_artefact_ns

Enumerator
pcmk__xml_artefact_ns_legacy_rng
pcmk__xml_artefact_ns_legacy_xslt
pcmk__xml_artefact_ns_base_rng
pcmk__xml_artefact_ns_base_xslt

Definition at line 149 of file xml_internal.h.

xml_private_flags

enum xml_private_flags

Enumerator
pcmk__xf_none
pcmk__xf_dirty
pcmk__xf_deleted
pcmk__xf_created
pcmk__xf_modified
pcmk__xf_tracking
pcmk__xf_processed
pcmk__xf_skip
pcmk__xf_moved
pcmk__xf_acl_enabled
pcmk__xf_acl_read
pcmk__xf_acl_write
pcmk__xf_acl_deny
pcmk__xf_acl_create
pcmk__xf_acl_denied
pcmk__xf_lazy

Definition at line 320 of file xml_internal.h.

Function Documentation

pcmk__element_xpath()

GString* pcmk__element_xpath

(

const xmlNode *

xml

)

Definition at line 281 of file xpath.c.

pcmk__set_xml_doc_flag()

void pcmk__set_xml_doc_flag	(	xmlNode *	xml,
		enum xml_private_flags	flag
	)

Definition at line 108 of file xml.c.

pcmk__strip_xml_text()

void pcmk__strip_xml_text

(

xmlNode *

xml

)

Definition at line 1078 of file xml.c.

pcmk__xe_add_last_written()

const char* pcmk__xe_add_last_written

(

xmlNode *

xe

)

Definition at line 1176 of file xml.c.

pcmk__xe_foreach_child()

int pcmk__xe_foreach_child	(	xmlNode *	xml,
		const char *	child_element_name,
		int(*)(xmlNode *xml, void *userdata)	handler,
		void *	userdata
	)

Definition at line 3112 of file xml.c.

pcmk__xe_match()

xmlNode* pcmk__xe_match	(	const xmlNode *	parent,
		const char *	node_name,
		const char *	attr_n,
		const char *	attr_v
	)

Definition at line 520 of file xml.c.

pcmk__xe_remove_matching_attrs()

void pcmk__xe_remove_matching_attrs	(	xmlNode *	element,
		bool(*)(xmlAttrPtr, void *)	match,
		void *	user_data
	)

Definition at line 682 of file xml.c.

pcmk__xe_set_props()

void pcmk__xe_set_props	(	xmlNodePtr	node,
			...
	)

Definition at line 3103 of file xml.c.

pcmk__xe_set_propv()

void pcmk__xe_set_propv	(	xmlNodePtr	node,
		va_list	pairs
	)

Definition at line 3085 of file xml.c.

pcmk__xml_artefact_path()

char* pcmk__xml_artefact_path	(	enum pcmk__xml_artefact_ns	ns,
		const char *	filespec
	)

Definition at line 3063 of file xml.c.

pcmk__xml_artefact_root()

char* pcmk__xml_artefact_root

(

enum pcmk__xml_artefact_ns

ns

)

Definition at line 3035 of file xml.c.

pcmk__xpath_node_id()

char* pcmk__xpath_node_id	(	const char *	xpath,
		const char *	node
	)

Definition at line 315 of file xpath.c.