func Changes(w http.ResponseWriter, r *http.Request) {
ctx := getContext(r)
/* options */
// always true temporarily: all_docs := flag(r, "style", "all_docs")
sincep := param(r, "since")
var since uint64
if sincep == "now" {
since = db.GlobalUpdateSeq()
} else {
var err error
since, err = strconv.ParseUint(sincep, 10, 64)
if err != nil {
since = 0
}
}
path := db.CleanPath(ctx.path)
changes, err := db.ListChangesAt(path, since)
if err != nil {
res := responses.UnknownError(err.Error())
w.WriteHeader(res.Code)
json.NewEncoder(w).Encode(res)
return
}
var lastSeq uint64 = 0
nchanges := len(changes)
if nchanges > 0 {
lastSeq = changes[nchanges-1].Seq
}
res := responses.Changes{
LastSeq: lastSeq,
Results: changes,
}
w.Header().Add("Content-Type", "application/json")
w.WriteHeader(200)
json.NewEncoder(w).Encode(res)
}
func TestSeqs(t *testing.T) {
g := Goblin(t)
RegisterFailHandler(func(m string, _ ...int) { g.Fail(m) })
g.Describe("seqs getting bumped", func() {
g.Before(func() {
db.Erase()
db.Start()
})
g.After(func() {
db.End()
})
/*
we currently don't care a lot to the exact seqs here,
we only care if the values are being increased and there
are no conflicts.
later maybe we'll have to optimize all this (and conseqüently
change all these tests) so we don't get new the seq
bumped for operations that do not result in an actual _rev
being written (in DELETE and UNDELETE operations there are
temporary _revs being created and then replaced by others
with the same number prefix).
*/
g.It("should increase seqs when adding a new tree", func() {
db.SaveTreeAt("", map[string]interface{}{
"x": "oiwaeuriasburis",
})
Expect(db.GlobalUpdateSeq()).To(BeEquivalentTo(2))
Expect(db.LastSeqAt("")).To(BeNumerically(">", uint64(0)))
Expect(db.LastSeqAt("/x")).To(BeNumerically("==", uint64(0)))
})
g.It("should increase seqs when adding a new value", func() {
db.SaveValueAt("/z", []byte("ihfiuewrhewoiruh"))
Expect(db.GlobalUpdateSeq()).To(BeEquivalentTo(4))
Expect(db.LastSeqAt("")).To(BeNumerically(">", uint64(2)))
Expect(db.LastSeqAt("/x")).To(BeNumerically("==", uint64(0)))
})
g.It("should increase seqs when deleting a value", func() {
db.DeleteAt("/x")
Expect(db.GlobalUpdateSeq()).To(BeEquivalentTo(7))
Expect(db.LastSeqAt("")).To(BeNumerically(">", uint64(5)))
Expect(db.LastSeqAt("/x")).To(BeNumerically("==", uint64(0)))
Expect(db.LastSeqAt("/z")).To(BeNumerically("==", uint64(0)))
})
g.It("should increase seqs when undeleting a value", func() {
db.SaveValueAt("/x/xchild", []byte("skjfbslkfbskdf"))
Expect(db.GlobalUpdateSeq()).To(BeEquivalentTo(10))
Expect(db.LastSeqAt("")).To(BeNumerically(">", uint64(7)))
Expect(db.LastSeqAt("/x")).To(BeNumerically(">", uint64(7)))
})
g.It("should increase seqs when making bizarre things", func() {
db.ReplaceTreeAt("/x", map[string]interface{}{
"xchild": nil,
"other": "saldkasndlksad",
"_val": "askjdasnkdjasd",
}, false)
db.ReplaceTreeAt("/x/xchild", map[string]interface{}{
"ham": "sadljkasndlksad",
"_val": "askjdasnkdjasd",
}, false)
Expect(db.GlobalUpdateSeq()).To(BeEquivalentTo(19))
})
})
}