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clientstore.go
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clientstore.go
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// Copyright 2017 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package sqlite
import (
"context"
"database/sql"
"fmt"
"strconv"
"strings"
"time"
log "github.com/golang/glog"
"github.com/google/fleetspeak/fleetspeak/src/common"
"github.com/google/fleetspeak/fleetspeak/src/server/db"
fspb "github.com/google/fleetspeak/fleetspeak/src/common/proto/fleetspeak"
mpb "github.com/google/fleetspeak/fleetspeak/src/common/proto/fleetspeak_monitoring"
spb "github.com/google/fleetspeak/fleetspeak/src/server/proto/fleetspeak_server"
tspb "google.golang.org/protobuf/types/known/timestamppb"
)
const (
bytesToMIB = 1.0 / float64(1<<20)
)
func (d *Datastore) ListClients(ctx context.Context, ids []common.ClientID) ([]*spb.Client, error) {
d.l.Lock()
defer d.l.Unlock()
// Return value map, maps string client ids to the return values.
retm := make(map[string]*spb.Client)
h := func(rows *sql.Rows, err error) error {
if err != nil {
return err
}
defer rows.Close()
for rows.Next() {
var sid string
var timeNS int64
var addr sql.NullString
var clockSecs, clockNanos sql.NullInt64
var streamTo sql.NullString
var blacklisted bool
if err := rows.Scan(&sid, &timeNS, &addr, &streamTo, &clockSecs, &clockNanos, &blacklisted); err != nil {
return err
}
id, err := common.StringToClientID(sid)
if err != nil {
return err
}
ts := tspb.New(time.Unix(0, timeNS))
if err := ts.CheckValid(); err != nil {
return err
}
if !addr.Valid {
addr.String = ""
}
if !streamTo.Valid {
streamTo.String = ""
}
var lastClock *tspb.Timestamp
if clockSecs.Valid && clockNanos.Valid {
lastClock = &tspb.Timestamp{
Seconds: clockSecs.Int64,
Nanos: int32(clockNanos.Int64),
}
}
retm[sid] = &spb.Client{
ClientId: id.Bytes(),
LastContactTime: ts,
LastContactAddress: addr.String,
LastContactStreamingTo: streamTo.String,
LastClock: lastClock,
Blacklisted: blacklisted,
}
}
return rows.Err()
}
j := func(rows *sql.Rows, err error) error {
if err != nil {
return err
}
defer rows.Close()
for rows.Next() {
var sid string
l := &fspb.Label{}
if err := rows.Scan(&sid, &l.ServiceName, &l.Label); err != nil {
return err
}
retm[sid].Labels = append(retm[sid].Labels, l)
}
return nil
}
err := d.runInTx(func(tx *sql.Tx) error {
if len(ids) == 0 {
if err := h(tx.QueryContext(ctx, "SELECT client_id, last_contact_time, last_contact_address, last_contact_streaming_to, last_clock_seconds, last_clock_nanos, blacklisted FROM clients")); err != nil {
return err
}
} else {
for _, id := range ids {
if err := h(tx.QueryContext(ctx, "SELECT client_id, last_contact_time, last_contact_address, last_contact_streaming_to, last_clock_seconds, last_clock_nanos, blacklisted FROM clients WHERE client_id = ?", id.String())); err != nil {
return err
}
}
}
// Match all the labels in the database with the client ids noted in the
// previous step. Note that clients.client_id is a foreign key of
// client_labels.
if len(ids) == 0 {
if err := j(tx.QueryContext(ctx, "SELECT client_id, service_name, label FROM client_labels")); err != nil {
return err
}
} else {
for _, id := range ids {
if err := j(tx.QueryContext(ctx, "SELECT client_id, service_name, label FROM client_labels WHERE client_id = ?", id.String())); err != nil {
return err
}
}
}
return nil
})
var ret []*spb.Client
for _, v := range retm {
ret = append(ret, v)
}
return ret, err
}
func (d *Datastore) StreamClientIds(ctx context.Context, includeBlacklisted bool, lastContactAfter *time.Time, callback func(common.ClientID) error) error {
d.l.Lock()
defer d.l.Unlock()
return d.runInTx(func(tx *sql.Tx) error {
args := []any{}
query := "SELECT client_id FROM clients"
conditions := []string{}
if !includeBlacklisted {
conditions = append(conditions, "NOT blacklisted")
}
if lastContactAfter != nil {
conditions = append(conditions, "last_contact_time > ?")
args = append(args, lastContactAfter.UnixNano())
}
if len(conditions) > 0 {
query = fmt.Sprintf("%s WHERE %s", query, strings.Join(conditions, " AND "))
}
rs, err := tx.QueryContext(ctx, query, args...)
if err != nil {
return err
}
defer rs.Close()
for rs.Next() {
var sid string
err := rs.Scan(&sid)
if err != nil {
return err
}
id, err := common.StringToClientID(sid)
if err != nil {
return err
}
err = callback(id)
if err != nil {
return err
}
}
return nil
})
}
func (d *Datastore) GetClientData(ctx context.Context, id common.ClientID) (*db.ClientData, error) {
d.l.Lock()
defer d.l.Unlock()
var cd *db.ClientData
err := d.runInTx(func(tx *sql.Tx) error {
sid := id.String()
r := tx.QueryRowContext(ctx, "SELECT client_key, blacklisted FROM clients WHERE client_id=?", sid)
var c db.ClientData
err := r.Scan(&c.Key, &c.Blacklisted)
if err != nil {
return err
}
rs, err := tx.QueryContext(ctx, "SELECT service_name, label FROM client_labels WHERE client_id=?", sid)
if err != nil {
return err
}
defer rs.Close()
for rs.Next() {
l := &fspb.Label{}
err = rs.Scan(&l.ServiceName, &l.Label)
if err != nil {
return err
}
c.Labels = append(c.Labels, l)
}
if err := rs.Err(); err != nil {
return err
}
cd = &c
return nil
})
return cd, err
}
func (d *Datastore) AddClient(ctx context.Context, id common.ClientID, data *db.ClientData) error {
d.l.Lock()
defer d.l.Unlock()
return d.runInTx(func(tx *sql.Tx) error {
sid := id.String()
if _, err := tx.ExecContext(ctx, "INSERT INTO clients(client_id, client_key, blacklisted, last_contact_time) VALUES(?, ?, ?, ?)", sid, data.Key, data.Blacklisted, db.Now().UnixNano()); err != nil {
return err
}
for _, l := range data.Labels {
if _, err := tx.ExecContext(ctx, "INSERT INTO client_labels(client_id, service_name, label) VALUES(?, ?, ?)", sid, l.ServiceName, l.Label); err != nil {
return err
}
}
return nil
})
}
func (d *Datastore) AddClientLabel(ctx context.Context, id common.ClientID, l *fspb.Label) error {
d.l.Lock()
defer d.l.Unlock()
_, err := d.db.ExecContext(ctx, "INSERT INTO client_labels(client_id, service_name, label) VALUES(?, ?, ?)", id.String(), l.ServiceName, l.Label)
return err
}
func (d *Datastore) RemoveClientLabel(ctx context.Context, id common.ClientID, l *fspb.Label) error {
d.l.Lock()
defer d.l.Unlock()
_, err := d.db.ExecContext(ctx, "DELETE FROM client_labels WHERE client_id=? AND service_name=? AND label=?", id.String(), l.ServiceName, l.Label)
return err
}
func (d *Datastore) BlacklistClient(ctx context.Context, id common.ClientID) error {
d.l.Lock()
defer d.l.Unlock()
_, err := d.db.ExecContext(ctx, "UPDATE clients SET blacklisted=1 WHERE client_id=?", id.String())
return err
}
func (d *Datastore) RecordClientContact(ctx context.Context, data db.ContactData) (db.ContactID, error) {
d.l.Lock()
defer d.l.Unlock()
var res db.ContactID
err := d.runInTx(func(tx *sql.Tx) error {
n := db.Now().UnixNano()
r, err := tx.ExecContext(ctx, "INSERT INTO client_contacts(client_id, time, sent_nonce, received_nonce, address) VALUES(?, ?, ?, ?, ?)",
data.ClientID.String(), n, strconv.FormatUint(data.NonceSent, 16), strconv.FormatUint(data.NonceReceived, 16), data.Addr)
if err != nil {
return err
}
id, err := r.LastInsertId()
if err != nil {
return err
}
var lcs, lcn sql.NullInt64
if data.ClientClock != nil {
lcs.Int64, lcs.Valid = data.ClientClock.Seconds, true
lcn.Int64, lcn.Valid = int64(data.ClientClock.Nanos), true
}
var lcst sql.NullString
if data.StreamingTo != "" {
lcst.String, lcst.Valid = data.StreamingTo, true
}
if _, err := tx.ExecContext(ctx, "UPDATE clients SET last_contact_time = ?, last_contact_streaming_to = ?, last_contact_address = ?, last_clock_seconds = ?, last_clock_nanos = ? WHERE client_id = ?", n, lcst, data.Addr, lcs, lcn, data.ClientID.String()); err != nil {
return err
}
res = db.ContactID(strconv.FormatUint(uint64(id), 16))
return nil
})
return res, err
}
func (d *Datastore) StreamClientContacts(ctx context.Context, id common.ClientID, callback func(*spb.ClientContact) error) error {
d.l.Lock()
defer d.l.Unlock()
if err := d.runInTx(func(tx *sql.Tx) error {
rows, err := tx.QueryContext(
ctx,
"SELECT time, sent_nonce, received_nonce, address FROM client_contacts WHERE client_id = ?",
id.String())
if err != nil {
return err
}
defer rows.Close()
for rows.Next() {
var addr sql.NullString
var timeNS int64
var sn, rn string
c := &spb.ClientContact{}
if err := rows.Scan(&timeNS, &sn, &rn, &addr); err != nil {
return err
}
c.SentNonce, err = strconv.ParseUint(sn, 16, 64)
if err != nil {
return fmt.Errorf("Unable to parse sent_nonce in db: %v", err)
}
c.ReceivedNonce, err = strconv.ParseUint(rn, 16, 64)
if err != nil {
return fmt.Errorf("Unable to parse received_nonce in db: %v", err)
}
if addr.Valid {
c.ObservedAddress = addr.String
}
ts := tspb.New(time.Unix(0, timeNS))
if err := ts.CheckValid(); err != nil {
return err
}
c.Timestamp = ts
err = callback(c)
if err != nil {
return err
}
}
return nil
}); err != nil {
return err
}
return nil
}
func (d *Datastore) ListClientContacts(ctx context.Context, id common.ClientID) ([]*spb.ClientContact, error) {
var res []*spb.ClientContact
callback := func(c *spb.ClientContact) error {
res = append(res, c)
return nil
}
return res, d.StreamClientContacts(ctx, id, callback)
}
func (d *Datastore) LinkMessagesToContact(ctx context.Context, contact db.ContactID, ids []common.MessageID) error {
c, err := strconv.ParseUint(string(contact), 16, 64)
if err != nil {
e := fmt.Errorf("unable to parse ContactID [%v]: %v", contact, err)
log.Error(e)
return e
}
d.l.Lock()
defer d.l.Unlock()
return d.runInTx(func(tx *sql.Tx) error {
for _, id := range ids {
if _, err := tx.ExecContext(ctx, "INSERT INTO client_contact_messages(client_contact_id, message_id) VALUES (?, ?)", c, id.String()); err != nil {
return err
}
}
return nil
})
}
func (d *Datastore) RecordResourceUsageData(ctx context.Context, id common.ClientID, rud *mpb.ResourceUsageData) error {
d.l.Lock()
defer d.l.Unlock()
if err := rud.ProcessStartTime.CheckValid(); err != nil {
return fmt.Errorf("failed to parse process start time: %v", err)
}
processStartTime := rud.ProcessStartTime.AsTime()
if err := rud.DataTimestamp.CheckValid(); err != nil {
return fmt.Errorf("failed to parse data timestamp: %v", err)
}
clientTimestamp := rud.DataTimestamp.AsTime()
return d.runInTx(func(tx *sql.Tx) error {
_, err := tx.ExecContext(
ctx,
"INSERT INTO client_resource_usage_records VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)",
id.String(),
rud.Scope,
rud.Pid,
processStartTime.UnixNano(),
clientTimestamp.UnixNano(),
db.Now().UnixNano(),
rud.ProcessTerminated,
rud.ResourceUsage.MeanUserCpuRate,
rud.ResourceUsage.MaxUserCpuRate,
rud.ResourceUsage.MeanSystemCpuRate,
rud.ResourceUsage.MaxSystemCpuRate,
int32(rud.ResourceUsage.MeanResidentMemory*bytesToMIB),
int32(float64(rud.ResourceUsage.MaxResidentMemory)*bytesToMIB),
int32(rud.ResourceUsage.MeanNumFds),
rud.ResourceUsage.MaxNumFds)
return err
})
}
func (d *Datastore) FetchResourceUsageRecords(ctx context.Context, id common.ClientID, startTimestamp, endTimestamp *tspb.Timestamp) ([]*spb.ClientResourceUsageRecord, error) {
d.l.Lock()
defer d.l.Unlock()
if err := startTimestamp.CheckValid(); err != nil {
return nil, err
}
startTimeRange := startTimestamp.AsTime()
if err := endTimestamp.CheckValid(); err != nil {
return nil, err
}
endTimeRange := endTimestamp.AsTime()
if startTimeRange.After(endTimeRange) {
return nil, fmt.Errorf("timerange is invalid: start timestamp is after end timestamp")
}
var records []*spb.ClientResourceUsageRecord
err := d.runInTx(func(tx *sql.Tx) error {
rows, err := tx.QueryContext(
ctx,
"SELECT "+
"scope, pid, process_start_time, client_timestamp, server_timestamp, "+
"process_terminated, mean_user_cpu_rate, max_user_cpu_rate, mean_system_cpu_rate, "+
"max_system_cpu_rate, mean_resident_memory_mib, max_resident_memory_mib, "+
"mean_num_fds, max_num_fds "+
"FROM client_resource_usage_records WHERE client_id=? "+
"AND server_timestamp >= ? AND server_timestamp < ?",
id.String(),
startTimeRange.UnixNano(),
endTimeRange.UnixNano())
if err != nil {
return err
}
defer rows.Close()
for rows.Next() {
record := &spb.ClientResourceUsageRecord{}
var processStartTime, clientTimestamp, serverTimestamp int64
err := rows.Scan(
&record.Scope, &record.Pid, &processStartTime, &clientTimestamp, &serverTimestamp,
&record.ProcessTerminated, &record.MeanUserCpuRate, &record.MaxUserCpuRate, &record.MeanSystemCpuRate,
&record.MaxSystemCpuRate, &record.MeanResidentMemoryMib, &record.MaxResidentMemoryMib,
&record.MeanNumFds, &record.MaxNumFds)
if err != nil {
return err
}
record.ProcessStartTime = timestampProto(processStartTime)
record.ClientTimestamp = timestampProto(clientTimestamp)
record.ServerTimestamp = timestampProto(serverTimestamp)
records = append(records, record)
}
return nil
})
if err != nil {
return nil, err
}
return records, nil
}
func timestampProto(nanos int64) *tspb.Timestamp {
return &tspb.Timestamp{
Seconds: nanos / time.Second.Nanoseconds(),
Nanos: int32(nanos % time.Second.Nanoseconds()),
}
}