/
activity.go
178 lines (153 loc) · 6.43 KB
/
activity.go
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package runner
import (
"context"
"database/sql"
"fmt"
"strconv"
"sync"
"time"
"github.com/pganalyze/collector/grant"
"github.com/pganalyze/collector/input/postgres"
"github.com/pganalyze/collector/output"
"github.com/pganalyze/collector/selftest"
"github.com/pganalyze/collector/state"
"github.com/pganalyze/collector/util"
"github.com/pkg/errors"
)
func processActivityForServer(ctx context.Context, server *state.Server, globalCollectionOpts state.CollectionOpts, logger *util.Logger) (state.PersistedActivityState, bool, error) {
var newGrant state.Grant
var err error
var connection *sql.DB
var activity state.TransientActivityState
newState := server.ActivityPrevState
if server.Config.SkipIfReplica {
connection, err = postgres.EstablishConnection(ctx, server, logger, globalCollectionOpts, "")
if err != nil {
return newState, false, errors.Wrap(err, "failed to connect to database")
}
defer connection.Close()
var isReplica bool
isReplica, err = postgres.GetIsReplica(ctx, logger, connection)
if err != nil {
return newState, false, err
}
if isReplica {
return newState, false, state.ErrReplicaCollectionDisabled
}
}
if !globalCollectionOpts.ForceEmptyGrant {
newGrant, err = grant.GetDefaultGrant(server, globalCollectionOpts, logger)
if err != nil {
return newState, false, errors.Wrap(err, "could not get default grant for activity snapshot")
}
if !newGrant.Config.EnableActivity {
if globalCollectionOpts.TestRun {
server.SelfTest.MarkCollectionAspectNotAvailable(state.CollectionAspectActivity, "not available on this plan")
server.SelfTest.HintCollectionAspect(state.CollectionAspectActivity, "Compare plans at %s", selftest.URLPrinter.Sprint("https://pganalyze.com/pricing"))
logger.PrintError(" Failed - Activity snapshots disabled by pganalyze")
} else {
logger.PrintVerbose("Activity snapshots disabled by pganalyze, skipping")
}
return newState, false, nil
}
}
// N.B.: Without the SkipIfReplica flag, we wait to establish the connection to avoid opening
// and closing it for no reason when the grant EnableActivity is not set (e.g., production plans)
if connection == nil {
connection, err = postgres.EstablishConnection(ctx, server, logger, globalCollectionOpts, "")
if err != nil {
return newState, false, errors.Wrap(err, "failed to connect to database")
}
defer connection.Close()
}
trackActivityQuerySize, err := postgres.GetPostgresSetting(ctx, "track_activity_query_size", server, globalCollectionOpts, logger)
if err != nil {
activity.TrackActivityQuerySize = -1
} else {
activity.TrackActivityQuerySize, err = strconv.Atoi(trackActivityQuerySize)
if err != nil {
activity.TrackActivityQuerySize = -1
}
}
activity.Version, err = postgres.GetPostgresVersion(ctx, logger, connection)
if err != nil {
return newState, false, errors.Wrap(err, "error collecting postgres version")
}
if activity.Version.Numeric < state.MinRequiredPostgresVersion {
return newState, false, fmt.Errorf("Error: Your PostgreSQL server version (%s) is too old, 10 or newer is required", activity.Version.Short)
}
activity.Backends, err = postgres.GetBackends(ctx, logger, connection, activity.Version, server.Config.SystemType, globalCollectionOpts.CollectPostgresLocks)
if err != nil {
return newState, false, errors.Wrap(err, "error collecting pg_stat_activity")
}
activity.Vacuums, err = postgres.GetVacuumProgress(ctx, logger, connection, activity.Version, server.Config.IgnoreSchemaRegexp)
if err != nil {
return newState, false, errors.Wrap(err, "error collecting pg_stat_vacuum_progress")
}
activity.CollectedAt = time.Now()
err = output.SubmitCompactActivitySnapshot(ctx, server, newGrant, globalCollectionOpts, logger, activity)
if err != nil {
return newState, false, errors.Wrap(err, "failed to upload/send activity snapshot")
}
newState.ActivitySnapshotAt = activity.CollectedAt
return newState, true, nil
}
// CollectActivityFromAllServers - Collects activity from all servers and sends them to the pganalyze service
func CollectActivityFromAllServers(ctx context.Context, servers []*state.Server, globalCollectionOpts state.CollectionOpts, logger *util.Logger) (allSuccessful bool) {
var wg sync.WaitGroup
allSuccessful = true
for idx := range servers {
server := servers[idx]
if server.Config.DisableActivity || (server.Grant.Valid && !server.Grant.Config.EnableActivity) {
server.SelfTest.MarkCollectionAspectNotAvailable(state.CollectionAspectActivity, "not available on this plan")
server.SelfTest.HintCollectionAspect(state.CollectionAspectActivity, "Compare plans at %s", selftest.URLPrinter.Sprint("https://pganalyze.com/pricing"))
continue
}
wg.Add(1)
go func(server *state.Server) {
prefixedLogger := logger.WithPrefixAndRememberErrors(server.Config.SectionName)
if globalCollectionOpts.TestRun {
prefixedLogger.PrintInfo("Testing activity snapshots...")
}
server.ActivityStateMutex.Lock()
newState, success, err := processActivityForServer(ctx, server, globalCollectionOpts, prefixedLogger)
if err != nil {
server.ActivityStateMutex.Unlock()
server.SelfTest.MarkCollectionAspectError(state.CollectionAspectActivity, err.Error())
server.CollectionStatusMutex.Lock()
isIgnoredReplica := err == state.ErrReplicaCollectionDisabled
if isIgnoredReplica {
reason := err.Error()
server.CollectionStatus = state.CollectionStatus{
CollectionDisabled: true,
CollectionDisabledReason: reason,
LogSnapshotDisabled: true,
LogSnapshotDisabledReason: reason,
}
}
server.CollectionStatusMutex.Unlock()
if isIgnoredReplica {
prefixedLogger.PrintVerbose("All monitoring suspended while server is replica")
} else {
allSuccessful = false
prefixedLogger.PrintError("Could not collect activity for server: %s", err)
if !isIgnoredReplica && server.Config.ErrorCallback != "" {
go runCompletionCallback("error", server.Config.ErrorCallback, server.Config.SectionName, "activity", err, prefixedLogger)
}
}
} else {
if success {
server.SelfTest.MarkCollectionAspectOk(state.CollectionAspectActivity)
}
server.ActivityPrevState = newState
server.ActivityStateMutex.Unlock()
if success && server.Config.SuccessCallback != "" {
go runCompletionCallback("success", server.Config.SuccessCallback, server.Config.SectionName, "activity", nil, prefixedLogger)
}
}
wg.Done()
}(server)
}
wg.Wait()
return
}