/
base_queryindexes.go
528 lines (447 loc) · 12.2 KB
/
base_queryindexes.go
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package gocb
import (
"context"
"encoding/json"
"errors"
"regexp"
"strconv"
"strings"
"time"
)
type baseQueryIndexManager struct {
provider queryIndexQueryProvider
globalTimeout time.Duration
tracer RequestTracer
meter *meterWrapper
}
type queryIndexQueryProvider interface {
Query(statement string, opts *QueryOptions) (*QueryResult, error)
}
func (qm *baseQueryIndexManager) tryParseErrorMessage(err error) error {
var qErr *QueryError
if !errors.As(err, &qErr) {
return err
}
if len(qErr.Errors) == 0 {
return err
}
firstErr := qErr.Errors[0]
var innerErr error
if firstErr.Code == 12016 {
innerErr = ErrIndexNotFound
} else if firstErr.Code == 4300 {
innerErr = ErrIndexExists
} else {
// Older server versions don't return meaningful error codes when it comes to index management
// so we need to go spelunking.
msg := strings.ToLower(firstErr.Message)
if match, err := regexp.MatchString(".*?ndex .*? not found.*", msg); err == nil && match {
innerErr = ErrIndexNotFound
} else if match, err := regexp.MatchString(".*?ndex .*? already exists.*", msg); err == nil && match {
innerErr = ErrIndexExists
}
}
if innerErr == nil {
return err
}
return QueryError{
InnerError: innerErr,
Statement: qErr.Statement,
ClientContextID: qErr.ClientContextID,
Errors: qErr.Errors,
Endpoint: qErr.Endpoint,
RetryReasons: qErr.RetryReasons,
RetryAttempts: qErr.RetryAttempts,
}
}
func (qm *baseQueryIndexManager) doQuery(q string, opts *QueryOptions) ([][]byte, error) {
if opts.Timeout == 0 {
opts.Timeout = qm.globalTimeout
}
result, err := qm.provider.Query(q, opts)
if err != nil {
return nil, qm.tryParseErrorMessage(err)
}
var rows [][]byte
for result.Next() {
var row json.RawMessage
err := result.Row(&row)
if err != nil {
logWarnf("management operation failed to read row: %s", err)
} else {
rows = append(rows, row)
}
}
err = result.Err()
if err != nil {
return nil, qm.tryParseErrorMessage(err)
}
return rows, nil
}
type jsonQueryIndex struct {
Name string `json:"name"`
IsPrimary bool `json:"is_primary"`
Type QueryIndexType `json:"using"`
State string `json:"state"`
Keyspace string `json:"keyspace_id"`
Namespace string `json:"namespace_id"`
IndexKey []string `json:"index_key"`
Condition string `json:"condition"`
Partition string `json:"partition"`
Scope string `json:"scope_id"`
Bucket string `json:"bucket_id"`
}
// QueryIndex represents a Couchbase GSI index.
type QueryIndex struct {
Name string
IsPrimary bool
Type QueryIndexType
State string
Keyspace string
Namespace string
IndexKey []string
Condition string
Partition string
CollectionName string
ScopeName string
BucketName string
}
func (index *QueryIndex) fromData(data jsonQueryIndex) error {
index.Name = data.Name
index.IsPrimary = data.IsPrimary
index.Type = data.Type
index.State = data.State
index.Keyspace = data.Keyspace
index.Namespace = data.Namespace
index.IndexKey = data.IndexKey
index.Condition = data.Condition
index.Partition = data.Partition
index.ScopeName = data.Scope
if data.Bucket == "" {
index.BucketName = data.Keyspace
} else {
index.BucketName = data.Bucket
}
if data.Scope != "" {
index.CollectionName = data.Keyspace
}
return nil
}
type createQueryIndexOptions struct {
IgnoreIfExists bool
Deferred bool
NumReplicas int
Timeout time.Duration
RetryStrategy RetryStrategy
}
func (qm *baseQueryIndexManager) CreateIndex(
ctx context.Context,
parent RequestSpan,
keyspace, indexName string,
fields []string,
opts createQueryIndexOptions,
) error {
var qs string
spanName := "manager_query_create_index"
if len(fields) == 0 {
spanName = "manager_query_create_primary_index"
qs += "CREATE PRIMARY INDEX"
} else {
qs += "CREATE INDEX"
}
if indexName != "" {
qs += " `" + indexName + "`"
}
qs += " ON " + keyspace
if len(fields) > 0 {
qs += " ("
for i := 0; i < len(fields); i++ {
if i > 0 {
qs += ", "
}
qs += "`" + fields[i] + "`"
}
qs += ")"
}
var with []string
if opts.Deferred {
with = append(with, `"defer_build":true`)
}
if opts.NumReplicas > 0 {
with = append(with, `"num_replica":`+strconv.Itoa(opts.NumReplicas))
}
if len(with) > 0 {
withStr := strings.Join(with, ",")
qs += " WITH {" + withStr + "}"
}
start := time.Now()
defer qm.meter.ValueRecord(meterValueServiceManagement, spanName, start)
span := createSpan(qm.tracer, parent, spanName, "management")
defer span.End()
_, err := qm.doQuery(qs, &QueryOptions{
Timeout: opts.Timeout,
RetryStrategy: opts.RetryStrategy,
Adhoc: true,
ParentSpan: span,
Context: ctx,
})
if err == nil {
return nil
}
if opts.IgnoreIfExists && errors.Is(err, ErrIndexExists) {
return nil
}
return err
}
type dropQueryIndexOptions struct {
IgnoreIfNotExists bool
Timeout time.Duration
RetryStrategy RetryStrategy
UseCollectionsSyntax bool
}
func (qm *baseQueryIndexManager) DropIndex(
ctx context.Context,
parent RequestSpan,
keyspace, indexName string,
opts dropQueryIndexOptions,
) error {
var qs string
spanName := "manager_query_drop_index"
if indexName == "" {
spanName = "manager_query_drop_primary_index"
qs += "DROP PRIMARY INDEX ON " + keyspace
} else {
if opts.UseCollectionsSyntax {
qs += "DROP INDEX `" + indexName + "` ON " + keyspace
} else {
qs += "DROP INDEX " + keyspace + ".`" + indexName + "`"
}
}
start := time.Now()
defer qm.meter.ValueRecord(meterValueServiceManagement, spanName, start)
span := createSpan(qm.tracer, parent, spanName, "management")
defer span.End()
_, err := qm.doQuery(qs, &QueryOptions{
Timeout: opts.Timeout,
RetryStrategy: opts.RetryStrategy,
Adhoc: true,
ParentSpan: span,
Context: ctx,
})
if err == nil {
return nil
}
if opts.IgnoreIfNotExists && errors.Is(err, ErrIndexNotFound) {
return nil
}
return err
}
type getAllQueryIndexesOptions struct {
Timeout time.Duration
RetryStrategy RetryStrategy
ParentSpan RequestSpan
// Using a deadlined Context alongside a Timeout will cause the shorter of the two to cause cancellation, this
// also applies to global level timeouts.
// UNCOMMITTED: This API may change in the future.
Context context.Context
}
func (qm *baseQueryIndexManager) GetAllIndexes(
ctx context.Context,
parent RequestSpan,
whereClause string,
params map[string]interface{},
opts getAllQueryIndexesOptions,
) ([]QueryIndex, error) {
start := time.Now()
defer qm.meter.ValueRecord(meterValueServiceManagement, "manager_query_get_all_indexes", start)
return qm.getAllIndexes(ctx, parent, whereClause, params, opts)
}
func (qm *baseQueryIndexManager) getAllIndexes(
ctx context.Context,
parent RequestSpan,
whereClause string,
params map[string]interface{},
opts getAllQueryIndexesOptions,
) ([]QueryIndex, error) {
span := createSpan(qm.tracer, parent, "manager_query_get_all_indexes", "management")
defer span.End()
q := "SELECT `idx`.* FROM system:indexes AS idx WHERE " + whereClause + " AND `using` = \"gsi\" " +
"ORDER BY is_primary DESC, name ASC"
rows, err := qm.doQuery(q, &QueryOptions{
NamedParameters: params,
Readonly: true,
Timeout: opts.Timeout,
RetryStrategy: opts.RetryStrategy,
Adhoc: true,
ParentSpan: span,
Context: ctx,
})
if err != nil {
return nil, err
}
var indexes []QueryIndex
for _, row := range rows {
var jsonIdx jsonQueryIndex
err := json.Unmarshal(row, &jsonIdx)
if err != nil {
return nil, err
}
var index QueryIndex
err = index.fromData(jsonIdx)
if err != nil {
return nil, err
}
indexes = append(indexes, index)
}
return indexes, nil
}
type buildDeferredQueryIndexOptions struct {
Timeout time.Duration
RetryStrategy RetryStrategy
ParentSpan RequestSpan
// Using a deadlined Context alongside a Timeout will cause the shorter of the two to cause cancellation, this
// also applies to global level timeouts.
// UNCOMMITTED: This API may change in the future.
Context context.Context
}
func (qm *baseQueryIndexManager) BuildDeferredIndexes(
keyspace string,
getIndexesWhereClause string,
getIndexesWhereParams map[string]interface{},
opts buildDeferredQueryIndexOptions,
) ([]string, error) {
start := time.Now()
defer qm.meter.ValueRecord(meterValueServiceManagement, "manager_query_build_deferred_indexes", start)
span := createSpan(qm.tracer, opts.ParentSpan, "manager_query_build_deferred_indexes", "management")
defer span.End()
query := "SELECT RAW name from system:indexes WHERE " + getIndexesWhereClause + " AND state = \"deferred\""
indexesRes, err := qm.doQuery(query, &QueryOptions{
Timeout: opts.Timeout,
RetryStrategy: opts.RetryStrategy,
Adhoc: true,
ParentSpan: span,
Context: opts.Context,
NamedParameters: getIndexesWhereParams,
})
if err != nil {
return nil, err
}
var deferredList []string
for _, row := range indexesRes {
var name string
err := json.Unmarshal(row, &name)
if err != nil {
return nil, err
}
deferredList = append(deferredList, name)
}
if len(deferredList) == 0 {
// Don't try to build an empty index list
return nil, nil
}
var qs string
qs += "BUILD INDEX ON " + keyspace + "("
for i := 0; i < len(deferredList); i++ {
if i > 0 {
qs += ", "
}
qs += "`" + deferredList[i] + "`"
}
qs += ")"
_, err = qm.doQuery(qs, &QueryOptions{
Timeout: opts.Timeout,
RetryStrategy: opts.RetryStrategy,
Adhoc: true,
ParentSpan: span,
Context: opts.Context,
})
if err != nil {
return nil, err
}
return deferredList, nil
}
func checkIndexesActive(indexes []QueryIndex, checkList []string) (bool, error) {
var checkIndexes []QueryIndex
for i := 0; i < len(checkList); i++ {
indexName := checkList[i]
for j := 0; j < len(indexes); j++ {
if indexes[j].Name == indexName {
checkIndexes = append(checkIndexes, indexes[j])
break
}
}
}
if len(checkIndexes) != len(checkList) {
return false, ErrIndexNotFound
}
for i := 0; i < len(checkIndexes); i++ {
if checkIndexes[i].State != "online" {
logDebugf("Index not online: %s is in state %s", checkIndexes[i].Name, checkIndexes[i].State)
return false, nil
}
}
return true, nil
}
type watchQueryIndexOptions struct {
WatchPrimary bool
RetryStrategy RetryStrategy
ParentSpan RequestSpan
// Using a deadlined Context alongside a Timeout will cause the shorter of the two to cause cancellation, this
// also applies to global level timeouts.
// UNCOMMITTED: This API may change in the future.
Context context.Context
}
func (qm *baseQueryIndexManager) WatchIndexes(
getAllWhereClause string,
getAllWhereParams map[string]interface{},
watchList []string,
timeout time.Duration,
opts watchQueryIndexOptions,
) error {
start := time.Now()
defer qm.meter.ValueRecord(meterValueServiceManagement, "manager_query_watch_indexes", start)
span := createSpan(qm.tracer, opts.ParentSpan, "manager_query_watch_indexes", "management")
defer span.End()
if opts.WatchPrimary {
watchList = append(watchList, "#primary")
}
deadline := time.Now().Add(timeout)
curInterval := 50 * time.Millisecond
for {
if deadline.Before(time.Now()) {
return ErrUnambiguousTimeout
}
indexes, err := qm.getAllIndexes(
opts.Context,
span,
getAllWhereClause,
getAllWhereParams,
getAllQueryIndexesOptions{
Timeout: time.Until(deadline),
RetryStrategy: opts.RetryStrategy,
})
if err != nil {
return err
}
allOnline, err := checkIndexesActive(indexes, watchList)
if err != nil {
return err
}
if allOnline {
break
}
curInterval += 500 * time.Millisecond
if curInterval > 1000 {
curInterval = 1000
}
// Make sure we don't sleep past our overall deadline, if we adjust the
// deadline then it will be caught at the top of this loop as a timeout.
sleepDeadline := time.Now().Add(curInterval)
if sleepDeadline.After(deadline) {
sleepDeadline = deadline
}
// wait till our next poll interval
time.Sleep(time.Until(sleepDeadline))
}
return nil
}