mirror of https://github.com/status-im/consul.git
Starting port of state store to MDB
This commit is contained in:
parent
3b47cce733
commit
85251683cc
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@ -1,33 +1,18 @@
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package consul
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import (
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"database/sql"
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"bytes"
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"fmt"
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"github.com/armon/gomdb"
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"github.com/hashicorp/consul/rpc"
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_ "github.com/mattn/go-sqlite3"
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"log"
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"sync/atomic"
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"time"
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"io/ioutil"
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"os"
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)
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// nextDBIndex is used to generate a new ID
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// using sync/atomic to ensure it is safe
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var nextDBIndex uint32 = 0
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type namedQuery uint8
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const (
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queryEnsureNode namedQuery = iota
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queryNode
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queryNodes
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queryEnsureService
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queryNodeServices
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queryDeleteNodeService
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queryDeleteNode
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queryServices
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queryServiceNodes
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queryServiceTagNodes
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queryAllServices
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dbNodes = "nodes" // Maps node -> addr
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dbServices = "services" // Maps node||serv -> rpc.NodeService
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dbServiceIndex = "serviceIndex" // Maps serv||tag||node -> rpc.ServiceNode
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)
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// The StateStore is responsible for maintaining all the Consul
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@ -35,34 +20,36 @@ const (
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// through the use of Raft. The goals of the StateStore are to provide
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// high concurrency for read operations without blocking writes, and
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// to provide write availability in the face of reads. The current
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// implementation uses an in-memory SQLite database. This reduced the
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// GC pressure on Go, and also gives us Multi-Version Concurrency Control
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// for "free".
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// implementation uses the Lightning Memory-Mapped Database (MDB).
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// This gives us Multi-Version Concurrency Control for "free"
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type StateStore struct {
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db *sql.DB
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prepared map[namedQuery]*sql.Stmt
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path string
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env *mdb.Env
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}
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// NewStateStore is used to create a new state store
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func NewStateStore() (*StateStore, error) {
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// Get the DB ID
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id := atomic.AddUint32(&nextDBIndex, 1)
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path := fmt.Sprintf("file:StateStore-%d?mode=memory&cache=shared", id)
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// Open the db
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db, err := sql.Open("sqlite3", path)
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// Create a new temp dir
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path, err := ioutil.TempDir("", "consul")
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if err != nil {
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return nil, fmt.Errorf("failed to open db: %v", err)
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return nil, err
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}
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// Open the env
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env, err := mdb.NewEnv()
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if err != nil {
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return nil, err
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}
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s := &StateStore{
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db: db,
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prepared: make(map[namedQuery]*sql.Stmt),
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path: path,
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env: env,
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}
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// Ensure we can initialize
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if err := s.initialize(); err != nil {
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db.Close()
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env.Close()
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os.RemoveAll(path)
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return nil, err
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}
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return s, nil
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@ -70,155 +57,249 @@ func NewStateStore() (*StateStore, error) {
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// Close is used to safely shutdown the state store
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func (s *StateStore) Close() error {
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return s.db.Close()
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s.env.Close()
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os.RemoveAll(s.path)
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return nil
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}
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// initialize is used to setup the sqlite store for use
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// initialize is used to setup the store for use
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func (s *StateStore) initialize() error {
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// Set the pragma first
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pragmas := []string{
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"pragma journal_mode=memory;",
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"pragma foreign_keys=ON;",
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"pragma read_uncommitted=true;",
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}
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for _, p := range pragmas {
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if _, err := s.db.Exec(p); err != nil {
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return fmt.Errorf("Failed to set '%s': %v", p, err)
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}
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// Setup the Env first
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if err := s.env.SetMaxDBs(mdb.DBI(16)); err != nil {
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return err
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}
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// Create the tables
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tables := []string{
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`CREATE TABLE nodes (name text unique, address text);`,
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`CREATE TABLE services (node text REFERENCES nodes(name) ON DELETE CASCADE, service text, tag text, port integer);`,
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`CREATE INDEX servName ON services(service, tag);`,
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`CREATE INDEX nodeName ON services(node);`,
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}
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for _, t := range tables {
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if _, err := s.db.Exec(t); err != nil {
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return fmt.Errorf("Failed to call '%s': %v", t, err)
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}
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// Optimize our flags for speed over safety, since the Raft log + snapshots
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// are durable. We treat this as an ephemeral in-memory DB, since we nuke
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// the data anyways.
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var flags uint = mdb.NOMETASYNC | mdb.NOSYNC | mdb.NOTLS
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if err := s.env.Open(s.path, flags, 0755); err != nil {
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return err
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}
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// Prepare the queries
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queries := map[namedQuery]string{
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queryEnsureNode: "INSERT OR REPLACE INTO nodes (name, address) VALUES (?, ?)",
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queryNode: "SELECT address FROM nodes where name=?",
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queryNodes: "SELECT * FROM nodes",
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queryEnsureService: "INSERT OR REPLACE INTO services (node, service, tag, port) VALUES (?, ?, ?, ?)",
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queryNodeServices: "SELECT service, tag, port from services where node=?",
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queryDeleteNodeService: "DELETE FROM services WHERE node=? AND service=?",
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queryDeleteNode: "DELETE FROM nodes WHERE name=?",
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queryServices: "SELECT DISTINCT service, tag FROM services",
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queryServiceNodes: "SELECT n.name, n.address, s.tag, s.port from nodes n, services s WHERE s.service=? AND s.node=n.name",
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queryServiceTagNodes: "SELECT n.name, n.address, s.tag, s.port from nodes n, services s WHERE s.service=? AND s.tag=? AND s.node=n.name",
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queryAllServices: "SELECT * FROM services",
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// Create all the tables
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tx, _, err := s.startTxn(false, dbNodes, dbServices, dbServiceIndex)
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if err != nil {
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tx.Abort()
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return err
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}
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for name, query := range queries {
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stmt, err := s.db.Prepare(query)
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return tx.Commit()
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}
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// startTxn is used to start a transaction and open all the associated sub-databases
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func (s *StateStore) startTxn(readonly bool, open ...string) (*mdb.Txn, []mdb.DBI, error) {
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var txFlags uint = 0
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var dbFlags uint = 0
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if readonly {
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txFlags |= mdb.RDONLY
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} else {
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dbFlags |= mdb.CREATE
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}
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tx, err := s.env.BeginTxn(nil, txFlags)
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if err != nil {
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return nil, nil, err
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}
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var dbs []mdb.DBI
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for _, name := range open {
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dbi, err := tx.DBIOpen(name, dbFlags)
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if err != nil {
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return fmt.Errorf("Failed to prepare '%s': %v", query, err)
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tx.Abort()
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return nil, nil, err
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}
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s.prepared[name] = stmt
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dbs = append(dbs, dbi)
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}
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return nil
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}
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func (s *StateStore) checkSet(res sql.Result, err error) error {
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if err != nil {
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return err
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}
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n, err := res.RowsAffected()
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if err != nil {
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return err
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}
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if n != 1 {
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return fmt.Errorf("Failed to set row")
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}
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return nil
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}
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func (s *StateStore) checkDelete(res sql.Result, err error) error {
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if err != nil {
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return err
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}
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_, err = res.RowsAffected()
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if err != nil {
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return err
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}
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return nil
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return tx, dbs, nil
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}
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// EnsureNode is used to ensure a given node exists, with the provided address
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func (s *StateStore) EnsureNode(name string, address string) error {
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stmt := s.prepared[queryEnsureNode]
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return s.checkSet(stmt.Exec(name, address))
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tx, dbis, err := s.startTxn(false, dbNodes)
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if err != nil {
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return err
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}
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if err := tx.Put(dbis[0], []byte(name), []byte(address), 0); err != nil {
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tx.Abort()
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return err
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}
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return tx.Commit()
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}
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// GetNode returns all the address of the known and if it was found
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func (s *StateStore) GetNode(name string) (bool, string) {
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stmt := s.prepared[queryNode]
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row := stmt.QueryRow(name)
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var addr string
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if err := row.Scan(&addr); err != nil {
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if err == sql.ErrNoRows {
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return false, addr
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} else {
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panic(fmt.Errorf("Failed to get node: %v", err))
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}
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tx, dbis, err := s.startTxn(true, dbNodes)
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if err != nil {
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panic(fmt.Errorf("Failed to get node: %v", err))
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}
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return true, addr
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defer tx.Abort()
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val, err := tx.Get(dbis[0], []byte(name))
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if err == mdb.NotFound {
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return false, ""
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} else if err != nil {
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panic(fmt.Errorf("Failed to get node: %v", err))
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}
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return true, string(val)
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}
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// GetNodes returns all the known nodes, the slice alternates between
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// the node name and address
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func (s *StateStore) Nodes() []string {
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stmt := s.prepared[queryNodes]
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return parseNodes(stmt.Query())
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}
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// parseNodes parses the result of a queryNodes statement
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func parseNodes(rows *sql.Rows, err error) []string {
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tx, dbis, err := s.startTxn(true, dbNodes)
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if err != nil {
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panic(fmt.Errorf("Failed to get nodes: %v", err))
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}
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data := make([]string, 0, 32)
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var name, address string
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for rows.Next() {
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if err := rows.Scan(&name, &address); err != nil {
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defer tx.Abort()
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cursor, err := tx.CursorOpen(dbis[0])
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if err != nil {
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panic(fmt.Errorf("Failed to get nodes: %v", err))
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}
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var nodes []string
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for {
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key, val, err := cursor.Get(nil, mdb.NEXT)
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if err == mdb.NotFound {
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break
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} else if err != nil {
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panic(fmt.Errorf("Failed to get nodes: %v", err))
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}
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data = append(data, name, address)
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nodes = append(nodes, string(key), string(val))
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}
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return data
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return nodes
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}
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// EnsureService is used to ensure a given node exposes a service
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func (s *StateStore) EnsureService(name, service, tag string, port int) error {
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stmt := s.prepared[queryEnsureService]
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return s.checkSet(stmt.Exec(name, service, tag, port))
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// Start a txn
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tx, dbis, err := s.startTxn(false, dbNodes, dbServices, dbServiceIndex)
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if err != nil {
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return err
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}
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nodes := dbis[0]
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services := dbis[1]
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index := dbis[2]
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// Get the existing services
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existing := filterNodeServices(tx, services, name)
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// Get the node
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addr, err := tx.Get(nodes, []byte(name))
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if err != nil {
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tx.Abort()
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return err
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}
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// Update the service entry
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key := []byte(fmt.Sprintf("%s||%s", name, service))
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nService := rpc.NodeService{
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Tag: tag,
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Port: port,
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}
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val, err := rpc.Encode(255, &nService)
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if err != nil {
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tx.Abort()
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return err
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}
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if err := tx.Put(services, key, val, 0); err != nil {
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tx.Abort()
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return err
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}
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// Remove previous entry if any
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if exist, ok := existing[service]; ok {
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key := []byte(fmt.Sprintf("%s||%s||%s", service, exist.Tag, name))
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if err := tx.Del(index, key, nil); err != nil {
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tx.Abort()
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return err
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}
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}
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// Update the index entry
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key = []byte(fmt.Sprintf("%s||%s||%s", service, tag, name))
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node := rpc.ServiceNode{
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Node: name,
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Address: string(addr),
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ServiceTag: tag,
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ServicePort: port,
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}
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val, err = rpc.Encode(255, &node)
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if err != nil {
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tx.Abort()
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return err
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}
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if err := tx.Put(index, key, val, 0); err != nil {
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tx.Abort()
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return err
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}
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return tx.Commit()
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}
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// NodeServices is used to return all the services of a given node
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func (s *StateStore) NodeServices(name string) rpc.NodeServices {
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stmt := s.prepared[queryNodeServices]
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return parseNodeServices(stmt.Query(name))
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tx, dbis, err := s.startTxn(true, dbServices)
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if err != nil {
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panic(fmt.Errorf("Failed to get node servicess: %v", err))
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}
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defer tx.Abort()
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return filterNodeServices(tx, dbis[0], name)
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}
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// filterNodeServices is used to filter the services to a specific node
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func filterNodeServices(tx *mdb.Txn, services mdb.DBI, name string) rpc.NodeServices {
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keyPrefix := []byte(fmt.Sprintf("%s||", name))
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return parseNodeServices(tx, services, keyPrefix)
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}
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// parseNodeServices is used to parse the results of a queryNodeServices
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func parseNodeServices(rows *sql.Rows, err error) rpc.NodeServices {
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func parseNodeServices(tx *mdb.Txn, dbi mdb.DBI, prefix []byte) rpc.NodeServices {
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// Create the cursor
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cursor, err := tx.CursorOpen(dbi)
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if err != nil {
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panic(fmt.Errorf("Failed to get node services: %v", err))
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panic(fmt.Errorf("Failed to get nodes: %v", err))
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}
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services := rpc.NodeServices(make(map[string]rpc.NodeService))
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var service string
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var entry rpc.NodeService
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for rows.Next() {
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if err := rows.Scan(&service, &entry.Tag, &entry.Port); err != nil {
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var key, val []byte
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first := true
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for {
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if first {
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first = false
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key, val, err = cursor.Get(prefix, mdb.SET_RANGE)
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} else {
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key, val, err = cursor.Get(nil, mdb.NEXT)
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}
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if err == mdb.NotFound {
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break
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} else if err != nil {
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panic(fmt.Errorf("Failed to get node services: %v", err))
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}
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// Bail if this does not match our filter
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if !bytes.HasPrefix(key, prefix) {
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break
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}
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// Split to get service name
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parts := bytes.SplitN(key, []byte("||"), 2)
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service = string(parts[1])
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// Setup the entry
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if val[0] != 255 {
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panic(fmt.Errorf("Bad service value: %v", val))
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}
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if err := rpc.Decode(val[1:], &entry); err != nil {
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panic(fmt.Errorf("Failed to get node services: %v", err))
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}
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// Add to the map
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services[service] = entry
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}
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return services
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@ -226,62 +307,168 @@ func parseNodeServices(rows *sql.Rows, err error) rpc.NodeServices {
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// DeleteNodeService is used to delete a node service
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func (s *StateStore) DeleteNodeService(node, service string) error {
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stmt := s.prepared[queryDeleteNodeService]
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return s.checkDelete(stmt.Exec(node, service))
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tx, dbis, err := s.startTxn(false, dbServices, dbServiceIndex)
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if err != nil {
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panic(fmt.Errorf("Failed to get node servicess: %v", err))
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}
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services := dbis[0]
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index := dbis[1]
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// Get the existing services
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existing := filterNodeServices(tx, services, node)
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exist, ok := existing[service]
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// Bail if no existing entry
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if !ok {
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tx.Abort()
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return nil
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}
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// Delete the node service entry
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key := []byte(fmt.Sprintf("%s||%s", node, service))
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if err = tx.Del(services, key, nil); err != nil {
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tx.Abort()
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return err
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}
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// Delete the sevice index entry
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key = []byte(fmt.Sprintf("%s||%s||%s", service, exist.Tag, node))
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if err := tx.Del(index, key, nil); err != nil {
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tx.Abort()
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return err
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}
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return tx.Commit()
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}
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// DeleteNode is used to delete a node and all it's services
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func (s *StateStore) DeleteNode(node string) error {
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stmt := s.prepared[queryDeleteNode]
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return s.checkDelete(stmt.Exec(node))
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tx, dbis, err := s.startTxn(false, dbNodes, dbServices, dbServiceIndex)
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if err != nil {
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panic(fmt.Errorf("Failed to get node servicess: %v", err))
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}
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nodes := dbis[0]
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services := dbis[1]
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index := dbis[2]
|
||||
|
||||
// Delete the node
|
||||
err = tx.Del(nodes, []byte(node), nil)
|
||||
if err == mdb.NotFound {
|
||||
err = nil
|
||||
} else if err != nil {
|
||||
tx.Abort()
|
||||
return err
|
||||
}
|
||||
|
||||
// Get the existing services
|
||||
existing := filterNodeServices(tx, services, node)
|
||||
|
||||
// Nuke all the services
|
||||
for service, entry := range existing {
|
||||
// Delete the node service entry
|
||||
key := []byte(fmt.Sprintf("%s||%s", node, service))
|
||||
if err = tx.Del(services, key, nil); err != nil {
|
||||
tx.Abort()
|
||||
return err
|
||||
}
|
||||
|
||||
// Delete the sevice index entry
|
||||
key = []byte(fmt.Sprintf("%s||%s||%s", service, entry.Tag, node))
|
||||
if err := tx.Del(index, key, nil); err != nil {
|
||||
tx.Abort()
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
return tx.Commit()
|
||||
}
|
||||
|
||||
// Services is used to return all the services with a list of associated tags
|
||||
func (s *StateStore) Services() map[string][]string {
|
||||
stmt := s.prepared[queryServices]
|
||||
rows, err := stmt.Query()
|
||||
tx, dbis, err := s.startTxn(false, dbServiceIndex)
|
||||
if err != nil {
|
||||
panic(fmt.Errorf("Failed to get node servicess: %v", err))
|
||||
}
|
||||
index := dbis[0]
|
||||
|
||||
cursor, err := tx.CursorOpen(index)
|
||||
if err != nil {
|
||||
panic(fmt.Errorf("Failed to get services: %v", err))
|
||||
}
|
||||
|
||||
services := make(map[string][]string)
|
||||
var service, tag string
|
||||
for rows.Next() {
|
||||
if err := rows.Scan(&service, &tag); err != nil {
|
||||
for {
|
||||
key, _, err := cursor.Get(nil, mdb.NEXT)
|
||||
if err == mdb.NotFound {
|
||||
break
|
||||
} else if err != nil {
|
||||
panic(fmt.Errorf("Failed to get services: %v", err))
|
||||
}
|
||||
parts := bytes.SplitN(key, []byte("||"), 3)
|
||||
service := string(parts[0])
|
||||
tag := string(parts[1])
|
||||
|
||||
tags := services[service]
|
||||
tags = append(tags, tag)
|
||||
services[service] = tags
|
||||
if !strContains(tags, tag) {
|
||||
tags = append(tags, tag)
|
||||
services[service] = tags
|
||||
}
|
||||
}
|
||||
|
||||
return services
|
||||
}
|
||||
|
||||
// ServiceNodes returns the nodes associated with a given service
|
||||
func (s *StateStore) ServiceNodes(service string) rpc.ServiceNodes {
|
||||
stmt := s.prepared[queryServiceNodes]
|
||||
return parseServiceNodes(stmt.Query(service))
|
||||
tx, dbis, err := s.startTxn(false, dbServiceIndex)
|
||||
if err != nil {
|
||||
panic(fmt.Errorf("Failed to get node servicess: %v", err))
|
||||
}
|
||||
defer tx.Abort()
|
||||
prefix := []byte(fmt.Sprintf("%s||", service))
|
||||
return parseServiceNodes(tx, dbis[0], prefix)
|
||||
}
|
||||
|
||||
// ServiceTagNodes returns the nodes associated with a given service matching a tag
|
||||
func (s *StateStore) ServiceTagNodes(service, tag string) rpc.ServiceNodes {
|
||||
stmt := s.prepared[queryServiceTagNodes]
|
||||
return parseServiceNodes(stmt.Query(service, tag))
|
||||
tx, dbis, err := s.startTxn(false, dbServiceIndex)
|
||||
if err != nil {
|
||||
panic(fmt.Errorf("Failed to get node servicess: %v", err))
|
||||
}
|
||||
defer tx.Abort()
|
||||
prefix := []byte(fmt.Sprintf("%s||%s||", service, tag))
|
||||
return parseServiceNodes(tx, dbis[0], prefix)
|
||||
}
|
||||
|
||||
// parseServiceNodes parses results from the queryServiceNodes / queryServiceTagNodes query
|
||||
func parseServiceNodes(rows *sql.Rows, err error) rpc.ServiceNodes {
|
||||
// parseServiceNodes parses results ServiceNodes and ServiceTagNodes
|
||||
func parseServiceNodes(tx *mdb.Txn, index mdb.DBI, prefix []byte) rpc.ServiceNodes {
|
||||
cursor, err := tx.CursorOpen(index)
|
||||
if err != nil {
|
||||
panic(fmt.Errorf("Failed to get service nodes: %v", err))
|
||||
panic(fmt.Errorf("Failed to get node services: %v", err))
|
||||
}
|
||||
|
||||
var nodes rpc.ServiceNodes
|
||||
var node rpc.ServiceNode
|
||||
for rows.Next() {
|
||||
if err := rows.Scan(&node.Node, &node.Address, &node.ServiceTag, &node.ServicePort); err != nil {
|
||||
panic(fmt.Errorf("Failed to get services: %v", err))
|
||||
for {
|
||||
key, val, err := cursor.Get(nil, mdb.NEXT)
|
||||
if err == mdb.NotFound {
|
||||
break
|
||||
} else if err != nil {
|
||||
panic(fmt.Errorf("Failed to get node services: %v", err))
|
||||
}
|
||||
|
||||
// Bail if this does not match our filter
|
||||
if !bytes.HasPrefix(key, prefix) {
|
||||
break
|
||||
}
|
||||
|
||||
// Setup the node
|
||||
if val[0] != 255 {
|
||||
panic(fmt.Errorf("Bad service value: %v", val))
|
||||
}
|
||||
if err := rpc.Decode(val[1:], &node); err != nil {
|
||||
panic(fmt.Errorf("Failed to get node services: %v", err))
|
||||
}
|
||||
|
||||
nodes = append(nodes, node)
|
||||
}
|
||||
return nodes
|
||||
|
@ -289,56 +476,5 @@ func parseServiceNodes(rows *sql.Rows, err error) rpc.ServiceNodes {
|
|||
|
||||
// Snapshot is used to create a point in time snapshot
|
||||
func (s *StateStore) Snapshot() (*StateStore, error) {
|
||||
defer func(start time.Time) {
|
||||
log.Printf("[INFO] StateStore Snapshot created in %v", time.Now().Sub(start))
|
||||
}(time.Now())
|
||||
|
||||
// Create a new state store
|
||||
state, err := NewStateStore()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// Start a Tx on the new DB
|
||||
tx, err := state.db.Begin()
|
||||
if err != nil {
|
||||
state.Close()
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// Create the new statements we need
|
||||
ensureNode := tx.Stmt(state.prepared[queryEnsureNode])
|
||||
ensureService := tx.Stmt(state.prepared[queryEnsureService])
|
||||
|
||||
// Copy all the nodes
|
||||
nodes := s.Nodes()
|
||||
for i := 0; i < len(nodes); i += 2 {
|
||||
if _, err := ensureNode.Exec(nodes[i], nodes[i+1]); err != nil {
|
||||
state.Close()
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
|
||||
// Copy all the services
|
||||
var node, service, tag string
|
||||
var port int
|
||||
rows, err := s.prepared[queryAllServices].Query()
|
||||
for rows.Next() {
|
||||
if err := rows.Scan(&node, &service, &tag, &port); err != nil {
|
||||
state.Close()
|
||||
return nil, err
|
||||
}
|
||||
if _, err := ensureService.Exec(node, service, tag, port); err != nil {
|
||||
state.Close()
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
|
||||
// Commit the Txn
|
||||
if err := tx.Commit(); err != nil {
|
||||
state.Close()
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return state, nil
|
||||
return s, nil
|
||||
}
|
||||
|
|
|
@ -50,7 +50,7 @@ func TestGetNodes(t *testing.T) {
|
|||
if len(nodes) != 4 {
|
||||
t.Fatalf("Bad: %v", nodes)
|
||||
}
|
||||
if nodes[0] != "foo" && nodes[2] != "bar" {
|
||||
if nodes[2] != "foo" && nodes[0] != "bar" {
|
||||
t.Fatalf("Bad: %v", nodes)
|
||||
}
|
||||
}
|
||||
|
@ -63,19 +63,19 @@ func TestEnsureService(t *testing.T) {
|
|||
defer store.Close()
|
||||
|
||||
if err := store.EnsureNode("foo", "127.0.0.1"); err != nil {
|
||||
t.Fatalf("err: %v")
|
||||
t.Fatalf("err: %v", err)
|
||||
}
|
||||
|
||||
if err := store.EnsureService("foo", "api", "", 5000); err != nil {
|
||||
t.Fatalf("err: %v")
|
||||
t.Fatalf("err: %v", err)
|
||||
}
|
||||
|
||||
if err := store.EnsureService("foo", "api", "", 5001); err != nil {
|
||||
t.Fatalf("err: %v")
|
||||
t.Fatalf("err: %v", err)
|
||||
}
|
||||
|
||||
if err := store.EnsureService("foo", "db", "master", 8000); err != nil {
|
||||
t.Fatalf("err: %v")
|
||||
t.Fatalf("err: %v", err)
|
||||
}
|
||||
|
||||
services := store.NodeServices("foo")
|
||||
|
@ -105,15 +105,15 @@ func TestDeleteNodeService(t *testing.T) {
|
|||
defer store.Close()
|
||||
|
||||
if err := store.EnsureNode("foo", "127.0.0.1"); err != nil {
|
||||
t.Fatalf("err: %v")
|
||||
t.Fatalf("err: %v", err)
|
||||
}
|
||||
|
||||
if err := store.EnsureService("foo", "api", "", 5000); err != nil {
|
||||
t.Fatalf("err: %v")
|
||||
t.Fatalf("err: %v", err)
|
||||
}
|
||||
|
||||
if err := store.DeleteNodeService("foo", "api"); err != nil {
|
||||
t.Fatalf("err: %v")
|
||||
t.Fatalf("err: %v", err)
|
||||
}
|
||||
|
||||
services := store.NodeServices("foo")
|
||||
|
|
Loading…
Reference in New Issue