Add pt-galera-log-explainer

src/go/pt-galera-log-explainer/regex/regex.go

@@ -0,0 +1,72 @@
+package regex
+
+import (
+	"errors"
+	"fmt"
+	"regexp"
+	"strings"
+
+	"github.com/percona/percona-toolkit/src/go/pt-galera-log-explainer/types"
+)
+
+func internalRegexSubmatch(regex *regexp.Regexp, log string) ([]string, error) {
+	slice := regex.FindStringSubmatch(log)
+	if len(slice) == 0 {
+		return nil, errors.New(fmt.Sprintf("Could not find submatch from log \"%s\" using pattern \"%s\"", log, regex.String()))
+	}
+	return slice, nil
+}
+
+func setType(t types.RegexType, regexes types.RegexMap) {
+	for _, regex := range regexes {
+		regex.Type = t
+	}
+	return
+}
+
+// SetVerbosity accepts any LogRegex
+// Some can be useful to construct context, but we can choose not to display them
+func SetVerbosity(verbosity types.Verbosity, regexes types.RegexMap) {
+	for _, regex := range regexes {
+		regex.Verbosity = verbosity
+	}
+	return
+}
+
+func AllRegexes() types.RegexMap {
+	IdentsMap.Merge(ViewsMap).Merge(SSTMap).Merge(EventsMap).Merge(StatesMap).Merge(ApplicativeMap)
+	return IdentsMap
+}
+
+// general building block wsrep regexes
+// It's later used to identify subgroups easier
+var (
+	groupMethod        = "ssltcp"
+	groupNodeIP        = "nodeip"
+	groupNodeHash      = "uuid"
+	groupUUID          = "uuid" // same value as groupnodehash, because both are used in same context
+	groupNodeName      = "nodename"
+	groupNodeName2     = "nodename2"
+	groupIdx           = "idx"
+	groupSeqno         = "seqno"
+	groupMembers       = "members"
+	groupVersion       = "version"
+	groupErrorMD5      = "errormd5"
+	regexMembers       = "(?P<" + groupMembers + ">[0-9]{1,2})"
+	regexNodeHash      = "(?P<" + groupNodeHash + ">[a-zA-Z0-9-_]+)"
+	regexNodeName      = "(?P<" + groupNodeName + `>[a-zA-Z0-9-_\.]+)`
+	regexNodeName2     = strings.Replace(regexNodeName, groupNodeName, groupNodeName2, 1)
+	regexUUID          = "(?P<" + groupUUID + ">[a-z0-9]+-[a-z0-9]{4}-[a-z0-9]{4}-[a-z0-9]{4}-[a-z0-9]+)" // eg ed97c863-d5c9-11ec-8ab7-671bbd2d70ef
+	regexNodeHash1Dash = "(?P<" + groupNodeHash + ">[a-z0-9]+-[a-z0-9]{4})"                               // eg ed97c863-8ab7
+	regexSeqno         = "(?P<" + groupSeqno + ">[0-9]+)"
+	regexNodeIP        = "(?P<" + groupNodeIP + ">[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3})"
+	regexNodeIPMethod  = "(?P<" + groupMethod + ">.+)://" + regexNodeIP + ":[0-9]{1,6}"
+	regexIdx           = "(?P<" + groupIdx + ">-?[0-9]{1,2})"
+	regexVersion       = "(?P<" + groupVersion + ">(5|8|10|11)\\.[0-9]\\.[0-9]{1,2})"
+	regexErrorMD5      = "(?P<" + groupErrorMD5 + ">[a-z0-9]*)"
+)
+
+func IsNodeUUID(s string) bool {
+	b, _ := regexp.MatchString(regexUUID, s)
+	return b
+}