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quality_eval.go
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quality_eval.go
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package search
import (
"bytes"
"database/sql"
"encoding/csv"
"encoding/json"
"fmt"
"io"
"io/ioutil"
"net/http"
"net/url"
"os"
"path"
"strconv"
"strings"
"sync"
"time"
"github.com/spf13/viper"
log "github.com/Sirupsen/logrus"
"github.com/pkg/errors"
"gopkg.in/olivere/elastic.v6"
"github.com/Bnei-Baruch/archive-backend/consts"
"github.com/Bnei-Baruch/archive-backend/mdb"
"github.com/Bnei-Baruch/archive-backend/utils"
"github.com/Bnei-Baruch/sqlboiler/queries"
)
const (
EVAL_SET_EXPECTATION_FIRST_COLUMN = 4
EVAL_SET_EXPECTATION_LAST_COLUMN = 8
)
// Search quality enum. Order important, the lower (higher integer) the better.
const (
SQ_SERVER_ERROR = iota
SQ_NO_EXPECTATION = iota
SQ_UNKNOWN = iota
SQ_REGULAR = iota
SQ_GOOD = iota
)
var SEARCH_QUALITY_NAME = map[int]string{
SQ_GOOD: "Good",
SQ_REGULAR: "Regular",
SQ_UNKNOWN: "Unknown",
SQ_NO_EXPECTATION: "NoExpectation",
SQ_SERVER_ERROR: "ServerError",
}
// Compare results classification.
const (
CR_WIN = iota
CR_LOSS = iota
CR_SAME = iota
CR_NO_EXPECTATION = iota
CR_ERROR = iota
)
var COMPARE_RESULTS_NAME = map[int]string{
CR_WIN: "Win",
CR_LOSS: "Loss",
CR_SAME: "Same",
CR_ERROR: "Error",
}
const (
ET_NOT_SET = -1
ET_CONTENT_UNITS = iota
ET_COLLECTIONS = iota
ET_LESSONS = iota
ET_PROGRAMS = iota
ET_SOURCES = iota
ET_EVENTS = iota
ET_LANDING_PAGE = iota
ET_EMPTY = iota
ET_FAILED_PARSE = iota
ET_BAD_STRUCTURE = iota
ET_FAILED_SQL = iota
)
var EXPECTATIONS_FOR_EVALUATION = map[int]bool{
ET_CONTENT_UNITS: true,
ET_COLLECTIONS: true,
ET_LESSONS: true,
ET_PROGRAMS: true,
ET_SOURCES: true,
ET_LANDING_PAGE: true,
ET_EMPTY: false,
ET_FAILED_PARSE: false,
ET_BAD_STRUCTURE: true,
ET_FAILED_SQL: true,
}
var EXPECTATION_TO_NAME = map[int]string{
ET_CONTENT_UNITS: "et_content_units",
ET_COLLECTIONS: "et_collections",
ET_LESSONS: "et_lessons",
ET_PROGRAMS: "et_programs",
ET_SOURCES: "et_sources",
ET_LANDING_PAGE: "et_landing_page",
ET_EMPTY: "et_empty",
ET_FAILED_PARSE: "et_failed_parse",
ET_BAD_STRUCTURE: "et_bad_structure",
ET_FAILED_SQL: "et_failed_sql",
}
var EXPECTATION_URL_PATH = map[int]string{
ET_CONTENT_UNITS: "cu",
ET_COLLECTIONS: "c",
ET_LESSONS: "lessons",
ET_PROGRAMS: "programs",
ET_SOURCES: "sources",
ET_EVENTS: "events",
}
var EXPECTATION_HIT_TYPE = map[int]string{
ET_CONTENT_UNITS: consts.ES_RESULT_TYPE_UNITS,
ET_COLLECTIONS: consts.ES_RESULT_TYPE_COLLECTIONS,
ET_LESSONS: consts.INTENT_HIT_TYPE_LESSONS,
ET_PROGRAMS: consts.INTENT_HIT_TYPE_PROGRAMS,
ET_SOURCES: consts.ES_RESULT_TYPE_SOURCES,
}
const (
FILTER_NAME_SOURCE = "source"
FILTER_NAME_TOPIC = "topic"
FILTER_NAME_CONTENT_TYPE = "contentType"
PREFIX_LATEST = "[latest]"
)
type Filter struct {
Name string `json:"name"`
Value string `json:"value"`
}
type Expectation struct {
Type int `json:"type"`
Uid string `json:"uid,omitempty"`
Filters []Filter `json:"filters,omitempty"`
Source string `json:"source"`
}
type Loss struct {
Expectation Expectation `json:"expectation,omitempty"`
Query EvalQuery `json:"query,omitempty"`
Unique float64 `json:"unique,omitempty"`
Weighted float64 `json:"weighted,omitempty"`
}
type EvalQuery struct {
Language string `json:"language"`
Query string `json:"query"`
Weight float64 `json:"weight,omitempty"`
Bucket string `json:"bucket,omitempty"`
Expectations []Expectation `json:"expectations"`
Comment string `json:"comment,omitempty"`
}
type EvalResults struct {
Results []EvalResult `json:"results"`
TotalUnique uint64 `json:"total_unique"`
TotalWeighted float64 `json:"total_weighted"`
TotalErrors uint64 `json:"total_errors"`
UniqueMap map[int]float64 `json:"unique_map"`
WeightedMap map[int]float64 `json:"weighted_map"`
}
type EvalResult struct {
SearchQuality []int `json:"search_quality"`
Rank []int `json:"rank"`
err error `json:"error"`
}
// Returns compare results classification constant.
func CompareResults(base int, exp int) int {
if base == SQ_NO_EXPECTATION || exp == SQ_NO_EXPECTATION {
return CR_NO_EXPECTATION
} else if base == SQ_SERVER_ERROR || exp == SQ_SERVER_ERROR {
return CR_ERROR
} else if base == exp {
return CR_SAME
} else if base < exp {
return CR_WIN // Experiment is better
} else {
return CR_LOSS // Base is better
}
}
func GoodExpectations(expectations []Expectation) int {
ret := 0
for i := range expectations {
if EXPECTATIONS_FOR_EVALUATION[expectations[i].Type] {
ret++
}
}
return ret
}
func InitAndReadEvalSet(evalSetPath string) ([]EvalQuery, error) {
db, err := sql.Open("postgres", viper.GetString("mdb.url"))
if err != nil {
return nil, errors.Wrap(err, "Unable to connect to DB.")
}
utils.Must(mdb.InitTypeRegistries(db))
f, err := os.Open(evalSetPath)
if err != nil {
return nil, err
}
defer f.Close()
return ReadEvalSet(f, db)
}
func ReadEvalSet(reader io.Reader, db *sql.DB) ([]EvalQuery, error) {
// Read File into a Variable
r := csv.NewReader(reader)
lines, err := r.ReadAll()
if err != nil {
return nil, err
}
expectationsCount := 0
queriesWithExpectationsCount := 0
var ret []EvalQuery
for _, line := range lines {
w, err := strconv.ParseFloat(strings.TrimSpace(line[2]), 64)
if err != nil {
log.Warnf("Failed parsing query [%s] weight [%s].", line[1], line[2])
continue
}
var expectations []Expectation
hasGoodExpectations := false
for i := EVAL_SET_EXPECTATION_FIRST_COLUMN; i <= EVAL_SET_EXPECTATION_LAST_COLUMN; i++ {
e := ParseExpectation(strings.TrimSpace(line[i]), db)
expectations = append(expectations, e)
if EXPECTATIONS_FOR_EVALUATION[e.Type] {
expectationsCount++
hasGoodExpectations = true
}
}
if hasGoodExpectations {
queriesWithExpectationsCount++
}
ret = append(ret, EvalQuery{
Language: strings.TrimSpace(line[0]),
Query: strings.TrimSpace(line[1]),
Weight: w,
Bucket: strings.TrimSpace(line[3]),
Expectations: expectations,
Comment: line[EVAL_SET_EXPECTATION_LAST_COLUMN+1],
})
}
log.Infof("Read %d queries, with total %d expectations. %d Queries had expectations.",
len(lines), expectationsCount, queriesWithExpectationsCount)
return ret, nil
}
type HitSource struct {
MdbUid string `json:"mdb_uid"`
ResultType string `json:"result_type"`
}
// Parses expectation described by result URL and converts
// to type (collections or content_units) and uid.
// Examples:
// https://kabbalahmedia.info/he/programs/cu/AsNLozeK ==> (content_units, AsNLozeK)
// https://kabbalahmedia.info/he/programs/c/fLWpcUjQ ==> (collections , fLWpcUjQ)
// https://kabbalahmedia.info/he/lessons/series/c/XZoflItG ==> (collections , XZoflItG)
// https://kabbalahmedia.info/he/lessons?source=bs_L2jMWyce_kB3eD83I ==> (lessons, nil, source=bs_L2jMWyce_kB3eD83I)
// https://kabbalahmedia.info/he/programs?topic=g3ml0jum_1nyptSIo_RWqjxgkj ==> (programs, nil, topic=g3ml0jum_1nyptSIo_RWqjxgkj)
// https://kabbalahmedia.info/he/sources/kB3eD83I ==> (source, kB3eD83I)
// [latest]https://kabbalahmedia.info/he/lessons?source=bs_qMUUn22b_hFeGidcS ==> (content_units, SLQOALyt)
// [latest]https://kabbalahmedia.info/he/programs?topic=g3ml0jum_1nyptSIo_RWqjxgkj ==> (content_units, erZIsm86)
// [latest]https://kabbalahmedia.info/he/programs/c/zf4lLwyI ==> (content_units, orMKRcNk)
// All events sub pages and years:
// https://kabbalahmedia.info/he/events/meals
// https://kabbalahmedia.info/he/events/friends-gatherings
// https://kabbalahmedia.info/he/events?year=2013
func ParseExpectation(e string, db *sql.DB) Expectation {
originalE := e
if strings.Trim(e, " ") == "" {
return Expectation{ET_EMPTY, "", nil, e}
}
takeLatest := strings.HasPrefix(strings.ToLower(e), PREFIX_LATEST)
if takeLatest {
e = e[len(PREFIX_LATEST):]
}
u, err := url.Parse(e)
if err != nil {
return Expectation{ET_FAILED_PARSE, "", nil, e}
}
p := u.RequestURI()
idx := strings.Index(p, "?")
q := "" // The query part, i.e., .../he/lessons?source=bs_L2jMWyce_kB3eD83I => source=bs_L2jMWyce_kB3eD83I
if idx >= 0 {
q = p[idx+1:]
p = p[:idx]
}
// Last part .../he/programs/cu/AsNLozeK => AsNLozeK or /he/lessons => lessons
uidOrSection := path.Base(p)
// One before last part .../he/programs/cu/AsNLozeK => cu
contentUnitOrCollection := path.Base(path.Dir(p))
t := ET_NOT_SET
subSection := ""
switch uidOrSection {
case EXPECTATION_URL_PATH[ET_LESSONS]:
t = ET_LESSONS
case EXPECTATION_URL_PATH[ET_PROGRAMS]:
t = ET_PROGRAMS
case EXPECTATION_URL_PATH[ET_EVENTS]:
t = ET_LANDING_PAGE
subSection = uidOrSection
}
if t != ET_NOT_SET {
var filters []Filter
if q != "" {
queryParts := strings.Split(q, "&")
filters = make([]Filter, len(queryParts))
for i, qp := range queryParts {
nameValue := strings.Split(qp, "=")
if len(nameValue) > 0 {
filters[i].Name = nameValue[0]
if len(nameValue) > 1 {
filters[i].Value = nameValue[1]
}
}
}
} else {
subSection = uidOrSection
t = ET_LANDING_PAGE
}
if takeLatest {
var err error
var entityType string
latestUID := ""
if subSection == "events" {
entityType = EXPECTATION_URL_PATH[ET_COLLECTIONS]
latestUID, err = getLatestUIDOfCollection(consts.CT_CONGRESS, db)
} else {
entityType = EXPECTATION_URL_PATH[ET_CONTENT_UNITS]
latestUID, err = getLatestUIDByFilters(filters, db)
}
if err != nil {
log.Warnf("Sql Error %+v", err)
return Expectation{ET_FAILED_SQL, "", filters, originalE}
}
newE := fmt.Sprintf("%s://%s%s/%s/%s", u.Scheme, u.Host, p, entityType, latestUID)
return ParseExpectation(newE, db)
}
return Expectation{t, subSection, filters, e}
}
switch contentUnitOrCollection {
case EXPECTATION_URL_PATH[ET_CONTENT_UNITS]:
t = ET_CONTENT_UNITS
case EXPECTATION_URL_PATH[ET_COLLECTIONS]:
t = ET_COLLECTIONS
if takeLatest {
latestUID, err := getLatestUIDByCollection(uidOrSection, db)
if err != nil {
log.Warnf("Sql Error %+v", err)
return Expectation{ET_FAILED_SQL, uidOrSection, nil, originalE}
}
uriParts := strings.Split(p, "/")
newE := fmt.Sprintf("%s://%s/%s/%s/%s/%s", u.Scheme, u.Host, uriParts[1], uriParts[2], EXPECTATION_URL_PATH[ET_CONTENT_UNITS], latestUID)
return ParseExpectation(newE, db)
}
case EXPECTATION_URL_PATH[ET_SOURCES]:
t = ET_SOURCES
case EXPECTATION_URL_PATH[ET_EVENTS]:
t = ET_LANDING_PAGE
case EXPECTATION_URL_PATH[ET_LESSONS]:
t = ET_LANDING_PAGE
default:
if uidOrSection == EXPECTATION_URL_PATH[ET_SOURCES] {
return Expectation{ET_SOURCES, "", nil, e}
} else if uidOrSection == EXPECTATION_URL_PATH[ET_LESSONS] {
return Expectation{ET_LANDING_PAGE, "", nil, e}
} else {
return Expectation{ET_BAD_STRUCTURE, "", nil, e}
}
}
if t == ET_LANDING_PAGE && takeLatest {
var err error
latestUID := ""
switch uidOrSection {
case "women":
latestUID, err = getLatestUIDByContentType(consts.CT_WOMEN_LESSON, db)
case "meals":
latestUID, err = getLatestUIDByContentType(consts.CT_MEAL, db)
case "friends-gatherings":
latestUID, err = getLatestUIDByContentType(consts.CT_FRIENDS_GATHERING, db)
case "lectures":
latestUID, err = getLatestUIDByContentType(consts.CT_LECTURE, db)
case "virtual":
latestUID, err = getLatestUIDByContentType(consts.CT_VIRTUAL_LESSON, db)
}
if err != nil || latestUID == "" {
log.Warnf("Sql Error %+v", err)
return Expectation{ET_FAILED_SQL, uidOrSection, nil, originalE}
}
uriParts := strings.Split(p, "/")
newE := fmt.Sprintf("%s://%s/%s/%s/%s/%s", u.Scheme, u.Host, uriParts[1], uriParts[2], EXPECTATION_URL_PATH[ET_CONTENT_UNITS], latestUID)
return ParseExpectation(newE, db)
}
if t == ET_NOT_SET {
panic(errors.New("Expectation not set."))
}
return Expectation{t, uidOrSection, nil, e}
}
func FilterValueToUid(value string) string {
sl := strings.Split(value, "_")
if len(sl) == 0 {
return ""
}
return sl[len(sl)-1]
}
func HitMatchesExpectation(hit *elastic.SearchHit, hitSource HitSource, e Expectation) bool {
hitType := hit.Type
if hitType == "result" {
hitType = hitSource.ResultType
}
if hitType != EXPECTATION_HIT_TYPE[e.Type] {
return false
}
if e.Type == ET_LESSONS || e.Type == ET_PROGRAMS {
// For now we support only one filter (zero also means not match).
if len(e.Filters) == 0 || len(e.Filters) > 1 {
return false
}
// Match all filters
filter := e.Filters[0]
return ((filter.Name == FILTER_NAME_TOPIC && hit.Index == consts.INTENT_INDEX_TAG) ||
(filter.Name == FILTER_NAME_SOURCE && hit.Index == consts.INTENT_INDEX_SOURCE)) &&
FilterValueToUid(filter.Value) == hitSource.MdbUid
} else {
return hitSource.MdbUid == e.Uid
}
}
func EvaluateQuery(q EvalQuery, serverUrl string) EvalResult {
r := EvalResult{
SearchQuality: make([]int, len(q.Expectations)),
Rank: make([]int, len(q.Expectations)),
err: nil,
}
hasGoodExpectation := false
for i := range q.Expectations {
r.SearchQuality[i] = SQ_NO_EXPECTATION
r.Rank[i] = -1
if EXPECTATIONS_FOR_EVALUATION[q.Expectations[i].Type] {
hasGoodExpectation = true
}
}
// Optimization, don't fetch query if no good expectations.
if !hasGoodExpectation {
return r
}
urlTemplate := "%s/search?q=%s&language=%s&page_no=1&page_size=10&sort_by=relevance&deb=true"
url := fmt.Sprintf(urlTemplate, serverUrl, url.QueryEscape(q.Query), q.Language)
resp, err := http.Get(url)
if err != nil {
log.Warnf("Error %+v", err)
for i := range q.Expectations {
if EXPECTATIONS_FOR_EVALUATION[q.Expectations[i].Type] {
r.SearchQuality[i] = SQ_SERVER_ERROR
}
}
r.err = err
return r
}
if resp.StatusCode != http.StatusOK {
bodyBytes, err := ioutil.ReadAll(resp.Body)
if err != nil {
r.err = errors.Wrapf(err, "Status not ok (%d), failed reading body. Url: %s.", resp.StatusCode, url)
}
errMsg := fmt.Sprintf("Status not ok (%d), body: %s, url: %s.", resp.StatusCode, string(bodyBytes), url)
log.Warn(errMsg)
for i := range q.Expectations {
if EXPECTATIONS_FOR_EVALUATION[q.Expectations[i].Type] {
r.SearchQuality[i] = SQ_SERVER_ERROR
}
}
r.err = errors.New(errMsg)
return r
}
queryResult := QueryResult{}
defer resp.Body.Close()
if err := json.NewDecoder(resp.Body).Decode(&queryResult); err != nil {
log.Warnf("Error decoding %+v", err)
for i := range q.Expectations {
if EXPECTATIONS_FOR_EVALUATION[q.Expectations[i].Type] {
r.SearchQuality[i] = SQ_SERVER_ERROR
}
}
r.err = err
return r
}
for i := range q.Expectations {
if EXPECTATIONS_FOR_EVALUATION[q.Expectations[i].Type] {
sq := SQ_UNKNOWN
rank := -1
for j, hit := range queryResult.SearchResult.Hits.Hits {
hitSource := HitSource{}
if err := json.Unmarshal(*hit.Source, &hitSource); err != nil {
log.Warnf("Error unmarshling source %+v", err)
sq = SQ_SERVER_ERROR
rank = -1
r.err = err
break
}
if HitMatchesExpectation(hit, hitSource, q.Expectations[i]) {
rank = j + 1
if j <= 2 {
sq = SQ_GOOD
} else {
sq = SQ_REGULAR
}
break
}
}
r.SearchQuality[i] = sq
r.Rank[i] = rank
}
}
return r
}
func Eval(queries []EvalQuery, serverUrl string) (EvalResults, map[int][]Loss, error) {
log.Infof("Evaluating %d queries on %s.", len(queries), serverUrl)
ret := EvalResults{}
ret.UniqueMap = make(map[int]float64)
ret.WeightedMap = make(map[int]float64)
evalResults := make([]EvalResult, len(queries))
var doneWG sync.WaitGroup
paralellism := 5
c := make(chan bool, paralellism)
for i := 0; i < paralellism; i++ {
c <- true
}
log.Infof("C: %d", len(c))
rate := time.Second / 10
throttle := time.Tick(rate)
for i, q := range queries {
<-throttle // rate limit our Service.Method RPCs
<-c
doneWG.Add(1)
go func(i int, q EvalQuery) {
defer doneWG.Done()
defer func() { c <- true }()
evalResults[i] = EvaluateQuery(q, serverUrl)
log.Infof("Done %d / %d", i, len(queries))
}(i, q)
}
doneWG.Wait()
for i, r := range evalResults {
q := queries[i]
goodExpectations := GoodExpectations(q.Expectations)
if goodExpectations > 0 {
for i, sq := range r.SearchQuality {
if EXPECTATIONS_FOR_EVALUATION[q.Expectations[i].Type] {
ret.UniqueMap[sq] += 1 / float64(goodExpectations)
// Each expectation has equal weight for the query.
ret.WeightedMap[sq] += float64(q.Weight) / float64(goodExpectations)
}
}
} else {
// Meaning that the query has not any good expectation.
ret.UniqueMap[SQ_NO_EXPECTATION]++
ret.WeightedMap[SQ_NO_EXPECTATION] += float64(q.Weight)
}
ret.TotalUnique++
ret.TotalWeighted += q.Weight
if r.err != nil {
ret.TotalErrors++
}
ret.Results = append(ret.Results, r)
if len(ret.Results)%20 == 0 {
log.Infof("Done evaluating (%d/%d) queries.", len(ret.Results), len(queries))
}
}
for k, v := range ret.UniqueMap {
ret.UniqueMap[k] = v / float64(ret.TotalUnique)
}
for k, v := range ret.WeightedMap {
ret.WeightedMap[k] = v / float64(ret.TotalWeighted)
}
// Print detailed loss (Unknown) analysis
losses := make(map[int][]Loss)
for i, q := range queries {
for j, sq := range ret.Results[i].SearchQuality {
e := q.Expectations[j]
goodExpectationsLen := GoodExpectations(q.Expectations)
if sq == SQ_UNKNOWN || sq == SQ_SERVER_ERROR {
if _, ok := losses[e.Type]; !ok {
losses[e.Type] = make([]Loss, 0)
}
loss := Loss{e, q, 1 / float64(goodExpectationsLen), float64(q.Weight) / float64(goodExpectationsLen)}
losses[e.Type] = append(losses[e.Type], loss)
}
}
}
return ret, losses, nil
}
func ExpectationToString(e Expectation) string {
filters := make([]string, len(e.Filters))
for i, f := range e.Filters {
filters[i] = fmt.Sprintf("%s - %s", f.Name, f.Value)
}
return fmt.Sprintf("%s|%s|%s", EXPECTATION_TO_NAME[e.Type], e.Uid, strings.Join(filters, ":"))
}
func ResultsByExpectation(queries []EvalQuery, results EvalResults) [][]string {
records := [][]string{{"Language", "Query", "Weight", "Bucket", "Comment",
"Expectation", "Parsed", "SearchQuality", "Rank"}}
for i, q := range queries {
goodExpectationsLen := GoodExpectations(q.Expectations)
for j, sq := range results.Results[i].SearchQuality {
if EXPECTATIONS_FOR_EVALUATION[q.Expectations[j].Type] {
record := []string{q.Language, q.Query, fmt.Sprintf("%.2f", float64(q.Weight)/float64(goodExpectationsLen)),
q.Bucket, q.Comment, q.Expectations[j].Source, ExpectationToString(q.Expectations[j]),
SEARCH_QUALITY_NAME[sq], fmt.Sprintf("%d", results.Results[i].Rank[j])}
records = append(records, record)
}
}
}
return records
}
func WriteResultsByExpectation(path string, queries []EvalQuery, results EvalResults) error {
return WriteToCsv(path, ResultsByExpectation(queries, results))
}
func WriteResults(path string, queries []EvalQuery, results EvalResults) error {
records := [][]string{{"Language", "Query", "Weight", "Bucket", "Comment"}}
for i := 0; i < EVAL_SET_EXPECTATION_LAST_COLUMN-EVAL_SET_EXPECTATION_FIRST_COLUMN+1; i++ {
records[0] = append(records[0], fmt.Sprintf("#%d", i+1))
records[0] = append(records[0], fmt.Sprintf("#%d Parsed", i+1))
records[0] = append(records[0], fmt.Sprintf("#%d SQ", i+1))
records[0] = append(records[0], fmt.Sprintf("#%d Rank", i+1))
}
for i, q := range queries {
record := []string{q.Language, q.Query, fmt.Sprintf("%.2f", q.Weight), q.Bucket, q.Comment}
for j, sq := range results.Results[i].SearchQuality {
record = append(record, q.Expectations[j].Source)
record = append(record, ExpectationToString(q.Expectations[j]))
record = append(record, SEARCH_QUALITY_NAME[sq])
record = append(record, fmt.Sprintf("%d", results.Results[i].Rank[j]))
}
records = append(records, record)
}
return WriteToCsv(path, records)
}
func CsvToString(records [][]string) (error, string) {
buf := new(bytes.Buffer)
w := csv.NewWriter(buf)
for _, record := range records {
if err := w.Write(record); err != nil {
return err, ""
}
}
w.Flush()
if err := w.Error(); err != nil {
return err, ""
}
return nil, buf.String()
}
func WriteToCsv(path string, records [][]string) error {
file, err := os.Create(path)
if err != nil {
return err
}
defer file.Close()
w := csv.NewWriter(file)
for _, record := range records {
if err := w.Write(record); err != nil {
return err
}
}
w.Flush()
if err := w.Error(); err != nil {
return err
}
return nil
}
func getLatestUIDByCollection(collectionUID string, db *sql.DB) (string, error) {
var latestUID string
queryMask := `select cu.uid from content_units cu
join collections_content_units ccu on cu.id = ccu.content_unit_id
join collections c on c.id = ccu.collection_id
where cu.published IS TRUE and cu.secure = 0
and cu.type_id NOT IN (%d, %d, %d, %d, %d, %d, %d)
and c.uid = '%s'
order by ccu.position desc
limit 1`
query := fmt.Sprintf(queryMask,
mdb.CONTENT_TYPE_REGISTRY.ByName[consts.CT_CLIP].ID,
mdb.CONTENT_TYPE_REGISTRY.ByName[consts.CT_LELO_MIKUD].ID,
mdb.CONTENT_TYPE_REGISTRY.ByName[consts.CT_PUBLICATION].ID,
mdb.CONTENT_TYPE_REGISTRY.ByName[consts.CT_SONG].ID,
mdb.CONTENT_TYPE_REGISTRY.ByName[consts.CT_BOOK].ID,
mdb.CONTENT_TYPE_REGISTRY.ByName[consts.CT_BLOG_POST].ID,
mdb.CONTENT_TYPE_REGISTRY.ByName[consts.CT_UNKNOWN].ID,
collectionUID)
row := queries.Raw(db, query).QueryRow()
err := row.Scan(&latestUID)
if err != nil {
return "", errors.Wrap(err, "Unable to retrieve from DB the latest content unit UID by collection.")
}
return latestUID, nil
}
func getLatestUIDByFilters(filters []Filter, db *sql.DB) (string, error) {
sourcesTempTableMask := `CREATE TEMP TABLE temp_rec_sources ON COMMIT DROP AS
(WITH RECURSIVE rec_sources AS (
SELECT id, parent_id FROM sources s
WHERE uid in (%s)
UNION SELECT
s.id, s.parent_id
FROM sources s INNER JOIN rec_sources rs ON s.parent_id = rs.id)
SELECT id FROM rec_sources);`
tagsTempTableMask := `CREATE TEMP TABLE temp_rec_tags ON COMMIT DROP AS
(WITH RECURSIVE rec_tags AS (
SELECT id, parent_id FROM tags t
WHERE uid in (%s)
UNION SELECT
t.id, t.parent_id
FROM tags t INNER JOIN rec_tags rt ON t.parent_id = rt.id)
SELECT id FROM rec_tags);`
queryMask := `
select cu.uid from content_units cu
left join content_units_tags cut on cut.content_unit_id = cu.id
left join tags t on t.id = cut.tag_id
left join content_units_sources cus on cus.content_unit_id = cu.id
left join sources s on s.id = cus.source_id
where cu.published IS TRUE and cu.secure = 0
and cu.type_id NOT IN (%d, %d, %d, %d, %d, %d, %d)
%s
order by (cu.properties->>'film_date')::date desc
limit 1`
var uid string
filterByUidQuery := ""
sourceUids := make([]string, 0)
tagsUids := make([]string, 0)
contentType := ""
query := ""
if len(filters) > 0 {
for _, filter := range filters {
switch filter.Name {
case FILTER_NAME_SOURCE:
uidStr := fmt.Sprintf("'%s'", FilterValueToUid(filter.Value))
sourceUids = append(sourceUids, uidStr)
case FILTER_NAME_TOPIC:
uidStr := fmt.Sprintf("'%s'", FilterValueToUid(filter.Value))
tagsUids = append(tagsUids, uidStr)
case FILTER_NAME_CONTENT_TYPE:
contentType = filter.Value
}
}
} else {
contentType = consts.CT_LESSON_PART
}
if len(sourceUids) > 0 {
filterByUidQuery += "and s.id in (select id from temp_rec_sources) "
sourcesTempTableQuery := fmt.Sprintf(sourcesTempTableMask, strings.Join(sourceUids, ","))
query += sourcesTempTableQuery
}
if len(tagsUids) > 0 {
filterByUidQuery += "and t.id in (select id from temp_rec_tags) "
tagsTempTableQuery := fmt.Sprintf(tagsTempTableMask, strings.Join(tagsUids, ","))
query += tagsTempTableQuery
}
if contentType != "" {
filterByUidQuery += fmt.Sprintf("and cu.type_id = %d ", mdb.CONTENT_TYPE_REGISTRY.ByName[contentType].ID)
}
query += fmt.Sprintf(queryMask,
mdb.CONTENT_TYPE_REGISTRY.ByName[consts.CT_CLIP].ID,
mdb.CONTENT_TYPE_REGISTRY.ByName[consts.CT_LELO_MIKUD].ID,
mdb.CONTENT_TYPE_REGISTRY.ByName[consts.CT_PUBLICATION].ID,
mdb.CONTENT_TYPE_REGISTRY.ByName[consts.CT_SONG].ID,
mdb.CONTENT_TYPE_REGISTRY.ByName[consts.CT_BOOK].ID,
mdb.CONTENT_TYPE_REGISTRY.ByName[consts.CT_BLOG_POST].ID,
mdb.CONTENT_TYPE_REGISTRY.ByName[consts.CT_UNKNOWN].ID,
filterByUidQuery)
row := queries.Raw(db, query).QueryRow()
err := row.Scan(&uid)
if err != nil {
return "", errors.Wrap(err, "Unable to retrieve from DB the latest UID for lesson by tag or by source or by content type.")
}
return uid, nil
}
func getLatestUIDByContentType(cT string, db *sql.DB) (string, error) {
return getLatestUIDByFilters([]Filter{Filter{Name: FILTER_NAME_CONTENT_TYPE, Value: cT}}, db)
}
func getLatestUIDOfCollection(contentType string, db *sql.DB) (string, error) {
var uid string
queryMask :=
`select c.uid from collections c
where c.published IS TRUE and c.secure = 0
and c.type_id = %d
order by (c.properties->>'film_date')::date desc
limit 1`
contentTypeId := mdb.CONTENT_TYPE_REGISTRY.ByName[contentType].ID
query := fmt.Sprintf(queryMask, contentTypeId)
row := queries.Raw(db, query).QueryRow()
err := row.Scan(&uid)
if err != nil {
return "", errors.Wrap(err, "Unable to retrieve from DB the latest UID for collection by content type.")
}
return uid, nil
}