// revWalkHandler goes through each commit and creates relevant info for each
// commit.
func revWalkHandler(commit *git.Commit) bool {
// Commit info.
hash := commit.Id().String()
if hash == "" {
return false
}
message := strings.Replace(commit.Message(), "\"", "'", -1)
// Parent info.
parentCount := commit.ParentCount()
var buffer bytes.Buffer
for i := uint(0); i < parentCount; i = i + 1 {
buffer.WriteString(commit.ParentId(i).String())
if i < parentCount-1 {
buffer.WriteString(" ")
}
}
parents := buffer.String()
// Author info.
authorSig := commit.Author()
authorName := authorSig.Name
authorEmail := authorSig.Email
authorTime := authorSig.When.Format("2006-01-02 15:04:05 +0000")
authorTimestamp := strconv.Itoa(int(authorSig.When.Unix()))
// Committer info.
committerSig := commit.Committer()
commitTime := committerSig.When.Format("2006-01-02 15:04:05 +0000")
commitTimestamp := strconv.Itoa(int(committerSig.When.Unix()))
// Write to csvFile
r := commit.Owner()
csvPath, err := TemporaryCsvPath(r)
if err != nil {
panic(err)
}
csvFile, err := os.OpenFile(csvPath, os.O_RDWR|os.O_APPEND, 0666)
if err != nil {
panic(err)
}
defer csvFile.Close()
w := csv.NewWriter(csvFile)
err = w.Write([]string{
hash, message, authorName, authorEmail, authorTime, authorTimestamp,
commitTime, commitTimestamp, parents,
})
if err != nil {
panic(err)
}
w.Flush()
if err = w.Error(); err != nil {
panic(err)
}
return true
}
// revWalkSyncHandler adds new commits to the repo graph.
// The walk stops when reaching the previous lastest commit in the database.
func revWalkSyncHandler(commit *git.Commit) bool {
// Get repo path.
r := commit.Owner()
path := r.Path()
// Commit info.
hash := commit.Id().String()
settings := GetSettings()
db, err := neoism.Connect(settings.DbUrl)
if err != nil {
panic(err)
}
res := []struct {
Hash string `json:"c.hash"`
}{}
cq := neoism.CypherQuery{
Statement: `
MATCH (:Repository {path: {path}})-[:HAS_COMMIT]->(c:Commit {hash: {hash}})
RETURN c.hash
`,
Parameters: neoism.Props{
"hash": hash,
"path": path,
},
Result: &res,
}
if err = db.Cypher(&cq); err != nil {
panic(err)
}
// When reaching an existing commit in the database, stop the walk.
if size := len(res); size > 0 {
return false
}
// Else, add the commit to the database.
message := strings.Replace(commit.Message(), "\"", "'", -1)
// Parent info.
parentCount := commit.ParentCount()
var buffer bytes.Buffer
for i := uint(0); i < parentCount; i = i + 1 {
buffer.WriteString(commit.ParentId(i).String())
if i < parentCount-1 {
buffer.WriteString(" ")
}
}
parents := buffer.String()
// Author info.
authorSig := commit.Author()
authorName := authorSig.Name
authorEmail := authorSig.Email
authorTime := authorSig.When.Format("2006-01-02 15:04:05 +0000")
authorTimestamp := strconv.Itoa(int(authorSig.When.Unix()))
// Committer info.
committerSig := commit.Committer()
commitTime := committerSig.When.Format("2006-01-02 15:04:05 +0000")
commitTimestamp := strconv.Itoa(int(committerSig.When.Unix()))
// Add accoding info to the graph.
commitCq := neoism.CypherQuery{
Statement: `
MATCH (r:Repository {path: {path}})
CREATE (r)-[:HAS_COMMIT]->(c:Commit {
message: {message},
author_time: {author_time},
author_timestamp: toInt({author_timestamp}),
commit_time: {commit_time},
commit_timestamp: toInt({commit_timestamp}),
hash: {hash},
parents: split({parents}, ' ')})
MERGE (u:User:Author {email: {author_email}}) ON CREATE SET u.name = {author_name}
MERGE (u)-[:AUTHORED]->(c)
MERGE (c)-[:AUTHORED_BY]->(u)
MERGE (u)-[:CONTRIBUTED_TO]->(r)
WITH c
WHERE {parents} <> ''
FOREACH (parent_hash in split({parents}, ' ') |
MERGE (parent:Commit {hash: parent_hash})
MERGE (c)-[:HAS_PARENT]->(parent))
`,
Parameters: neoism.Props{
"path": path,
"hash": hash,
"message": message,
"author_name": authorName,
"author_email": authorEmail,
"author_time": authorTime,
"author_timestamp": authorTimestamp,
"commit_time": commitTime,
"commit_timestamp": commitTimestamp,
"parents": parents,
},
}
if err = db.Cypher(&commitCq); err != nil {
return false
}
return true
}
