"pg_stat_database_conflicts": map[string]ColumnMapping{
"datid": {LABEL, "OID of a database", nil, nil},
"datname": {LABEL, "Name of this database", nil, nil},
"confl_tablespace": {COUNTER, "Number of queries in this database that have been canceled due to dropped tablespaces", nil, nil},
"confl_lock": {COUNTER, "Number of queries in this database that have been canceled due to lock timeouts", nil, nil},
"confl_snapshot": {COUNTER, "Number of queries in this database that have been canceled due to old snapshots", nil, nil},
"confl_bufferpin": {COUNTER, "Number of queries in this database that have been canceled due to pinned buffers", nil, nil},
"confl_deadlock": {COUNTER, "Number of queries in this database that have been canceled due to deadlocks", nil, nil},
},
"pg_locks": map[string]ColumnMapping{
"datname": {LABEL, "Name of this database", nil, nil},
"mode": {LABEL, "Type of Lock", nil, nil},
"count": {GAUGE, "Number of locks", nil, nil},
},
"pg_stat_replication": map[string]ColumnMapping{
"procpid": {DISCARD, "Process ID of a WAL sender process", nil, semver.MustParseRange("<9.2.0")},
"pid": {DISCARD, "Process ID of a WAL sender process", nil, semver.MustParseRange(">=9.2.0")},
"usesysid": {DISCARD, "OID of the user logged into this WAL sender process", nil, nil},
"usename": {DISCARD, "Name of the user logged into this WAL sender process", nil, nil},
"application_name": {DISCARD, "Name of the application that is connected to this WAL sender", nil, nil},
"client_addr": {LABEL, "IP address of the client connected to this WAL sender. If this field is null, it indicates that the client is connected via a Unix socket on the server machine.", nil, nil},
"client_hostname": {DISCARD, "Host name of the connected client, as reported by a reverse DNS lookup of client_addr. This field will only be non-null for IP connections, and only when log_hostname is enabled.", nil, nil},
"client_port": {DISCARD, "TCP port number that the client is using for communication with this WAL sender, or -1 if a Unix socket is used", nil, nil},
"backend_start": {DISCARD, "with time zone Time when this process was started, i.e., when the client connected to this WAL sender", nil, nil},
"backend_xmin": {DISCARD, "The current backend's xmin horizon.", nil, nil},
"state": {LABEL, "Current WAL sender state", nil, nil},
"sent_location": {DISCARD, "Last transaction log position sent on this connection", nil, nil},
"write_location": {DISCARD, "Last transaction log position written to disk by this standby server", nil, nil},
"flush_location": {DISCARD, "Last transaction log position flushed to disk by this standby server", nil, nil},
"replay_location": {DISCARD, "Last transaction log position replayed into the database on this standby server", nil, nil},
"sync_priority": {DISCARD, "Priority of this standby server for being chosen as the synchronous standby", nil, nil},
package main
import (
"encoding/json"
"io"
"net/http"
"os"
"path"
"sort"
"strconv"
"strings"
"github.com/blang/semver"
)
var allowedRange = semver.MustParseRange(">=1.0.0-beta0")
type File struct {
Name string `json:"name"`
Url string `json:"browser_download_url"`
}
type Release struct {
Version semver.Version
Tag string `json:"tag_name"`
Files []File `json:"assets"`
}
type Releases []Release
func (rs Releases) Len() int {
return len(rs)
func (s *FunctionalSuite) TestSemanticVersionColumnDiscard(c *C) {
testMetricMap := map[string]map[string]ColumnMapping{
"test_namespace": map[string]ColumnMapping{
"metric_which_stays": {COUNTER, "This metric should not be eliminated", nil, nil},
"metric_which_discards": {COUNTER, "This metric should be forced to DISCARD", nil, nil},
},
}
{
// No metrics should be eliminated
resultMap := makeDescMap(semver.MustParse("0.0.1"), testMetricMap)
c.Check(
resultMap["test_namespace"].columnMappings["metric_which_stays"].discard,
Equals,
false,
)
c.Check(
resultMap["test_namespace"].columnMappings["metric_which_discards"].discard,
Equals,
false,
)
}
{
// Update the map so the discard metric should be eliminated
discardable_metric := testMetricMap["test_namespace"]["metric_which_discards"]
discardable_metric.supportedVersions = semver.MustParseRange(">0.0.1")
testMetricMap["test_namespace"]["metric_which_discards"] = discardable_metric
// Discard metric should be discarded
resultMap := makeDescMap(semver.MustParse("0.0.1"), testMetricMap)
c.Check(
resultMap["test_namespace"].columnMappings["metric_which_stays"].discard,
Equals,
false,
)
c.Check(
resultMap["test_namespace"].columnMappings["metric_which_discards"].discard,
Equals,
true,
)
}
{
// Update the map so the discard metric should be kept but has a version
discardable_metric := testMetricMap["test_namespace"]["metric_which_discards"]
discardable_metric.supportedVersions = semver.MustParseRange(">0.0.1")
testMetricMap["test_namespace"]["metric_which_discards"] = discardable_metric
// Discard metric should be discarded
resultMap := makeDescMap(semver.MustParse("0.0.2"), testMetricMap)
c.Check(
resultMap["test_namespace"].columnMappings["metric_which_stays"].discard,
Equals,
false,
)
c.Check(
resultMap["test_namespace"].columnMappings["metric_which_discards"].discard,
Equals,
false,
)
}
}