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pmiaddinstance(3) [centos man page]

PMIADDINSTANCE(3)					     Library Functions Manual						 PMIADDINSTANCE(3)

NAME
pmiAddInstance - add an element to an instance domain in a LOGIMPORT context C SYNOPSIS
#include <pcp/pmapi.h> #include <pcp/impl.h> #include <pcp/import.h> int pmiAddInstance(pmInDom indom, const char *instance, int inst); cc ... -lpcp_import -lpcp Perl SYNOPSIS use PCP::LogImport; pmiAddInstance($indom, $instance, $inst); DESCRIPTION
As part of the Performance Co-Pilot Log Import API (see LOGIMPORT(3)), pmiAddInstance adds a new element to the instance domain identified by indom. indom would normally be constructed using the pmInDom_build macro, e.g. pmInDom_build(PMI_DOMAIN,0) for the first instance domain in the Performance Metrics Domain PMI_DOMAIN (which is the default for all meta data created by the LOGIMPORT library). The new instance must have both an external name (instance) and an internal instance identifier (inst) that is unique across all instances in the indom instance domain. There is a special ``uniqueness rule'' for instance that is imposed by pmLookupInDom(3), namely that the external instance name must be unique in the leading non-space characters, e.g. the instance names ``foo'' and ``foo bar'' are considered the same by this rule and not allowed in the same instance domain, but ``foo'' and ``foobar'' would be allowed. Once defined, the external instance name can be used in calls to pmiGetHandle(3) and/or pmiPutValue(3) with the name of a metric defined over the same instance domain. DIAGNOSTICS
pmiAddInstance returns zero on success else a negative value that can be turned into an error message by calling pmiErrStr(3). SEE ALSO
LOGIMPORT(3), pmiAddMetric(3), pmiErrStr(3), pmiGetHandle(3), pmiPutValue(3) and pmLookupInDom(3). Performance Co-Pilot PMIADDINSTANCE(3)

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LOGIMPORT(3)						     Library Functions Manual						      LOGIMPORT(3)

NAME
LOGIMPORT - introduction to the library for importing data and creating a PCP archive C SYNOPSIS
#include <pcp/pmapi.h> #include <pcp/impl.h> #include <pcp/import.h> cc ... -lpcp_import -lpcp Perl SYNOPSIS use PCP::LogImport; DESCRIPTION
The Performance Co-Pilot Log Import (LOGIMPORT) API is a library (and Perl wrapper) that supports the creation of PCP archives from exter- nal sources of performance data, either in the form of historical logs and spreadsheets or from real-time sources that are not integrated as a Performance Metrics Domain Agent (PMDA) under the control of pmcd(1). The typical usage for LOGIMPORT would involve: o An initial call to pmiStart(3). o Optional calls to pmiSetHostname(3) and/or pmiSetTimezone(3) to set the hostname and timezone for the source of the performance data. o One or more calls to pmiAddMetric(3) to define performance metrics. o One or more calls to pmiAddInstance(3) to define instances associated with the metrics. o Optional calls to pmiGetHandle(3) to defined convenience handles for metric-instance pairs. o A main loop in which performance data is injested and for each sample time interval, the PCP archive record is constructed by calls to pmiPutValue(3) and/or pmiPutValueHandle(3), followed by a call to pmiWrite(3) to flush all data and any associated new metadata to the PCP archive. Alternatively, pmiPutResult(3) could be used to package and process all the data for one sample time interval. o Once the input source of data has been consumed, calling pmiEnd(3) to complete the PCP archive creation and close all open files. If new metrics and/or instances are discovered during the data injestion, these can be added by subsequent calls to pmiAddMetric(3) and/or pmiAddInstance(3), provided all the metrics and instances have been defined before a call to pmiGetHandle(3), pmiPutValue(3)or pmiPutRe- sult(3) that references those metrics and instances. SEE ALSO
pmcd(1), pmlogger(1), pmiGetHandle(3), pmiAddInstance(3), pmiAddMetric(3), pmiEnd(3), pmiErrStr(3), pmiPutResult(3), pmiPutValue(3), pmiPutValueHandle(3), pmiSetHostname(3), pmiSetTimezone(3), pmiStart(3) and pmiWrite(3). Performance Co-Pilot LOGIMPORT(3)
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