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Try reconnecting Mongo on EOF #3269

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merged 3 commits into from
Aug 31, 2017
Merged

Try reconnecting Mongo on EOF #3269

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6fd6ed6
Add some reconnection logic in case of EOF in Mongo
jefferai Jul 7, 2017
e032b2a
Check error string in addition to type for EOF
jefferai Jul 18, 2017
cc62d2b
Fix compilation
jefferai Aug 31, 2017
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35 changes: 33 additions & 2 deletions plugins/database/mongodb/mongodb.go
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Original file line number Diff line number Diff line change
@@ -1,12 +1,15 @@
package mongodb

import (
"io"
"strings"
"time"

"encoding/json"

"fmt"

"github.com/hashicorp/errwrap"
"github.com/hashicorp/vault/api"
"github.com/hashicorp/vault/builtin/logical/database/dbplugin"
"github.com/hashicorp/vault/plugins"
Expand Down Expand Up @@ -124,7 +127,21 @@ func (m *MongoDB) CreateUser(statements dbplugin.Statements, usernameConfig dbpl
}

err = session.DB(mongoCS.DB).Run(createUserCmd, nil)
if err != nil {
switch {
case err == nil:
case err == io.EOF, strings.Contains(err.Error(), "EOF"):
if err := m.ConnectionProducer.Close(); err != nil {
return "", "", errwrap.Wrapf("error closing EOF'd mongo connection: {{err}}", err)
}
session, err := m.getConnection()
if err != nil {
return "", "", err
}
err = session.DB(mongoCS.DB).Run(createUserCmd, nil)
if err != nil {
return "", "", err
}
default:
return "", "", err
}

Expand Down Expand Up @@ -165,7 +182,21 @@ func (m *MongoDB) RevokeUser(statements dbplugin.Statements, username string) er
}

err = session.DB(db).RemoveUser(username)
if err != nil && err != mgo.ErrNotFound {
switch {
case err == nil, err == mgo.ErrNotFound:
case err == io.EOF, strings.Contains(err.Error(), "EOF"):
if err := m.ConnectionProducer.Close(); err != nil {
return errwrap.Wrapf("error closing EOF'd mongo connection: {{err}}", err)
}
session, err := m.getConnection()
if err != nil {
return err
}
err = session.DB(db).RemoveUser(username)
if err != nil {
return err
}
default:
return err
}

Expand Down