feat: complete cmpp gateway delivery recovery workflows
This commit is contained in:
hectorzhao
@@ -0,0 +1,697 @@
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package upstream
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import (
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"bytes"
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"context"
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"encoding/json"
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"errors"
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"fmt"
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"net"
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"net/http"
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"strings"
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"sync"
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"time"
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"cmpp-platform/gateway/internal/queue"
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cmpp "github.com/bigwhite/gocmpp"
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cmpputils "github.com/bigwhite/gocmpp/utils"
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)
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const (
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defaultConnectTimeout = 5 * time.Second
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defaultSubmitTimeout = 10 * time.Second
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defaultHTTPTimeout = 10 * time.Second
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defaultWindowSize = 16
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)
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type Manager struct {
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APIBaseURL string
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HTTPClient *http.Client
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mu sync.Mutex
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conns map[string]*connectionPool
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}
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func (m *Manager) Submit(ctx context.Context, cmd queue.SubmitCommand) (queue.SubmitResult, error) {
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if err := validateSubmitCommand(cmd); err != nil {
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result := submitResult(cmd, 0, "", "rejected", "INVALID_COMMAND", err.Error())
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if postErr := m.post(ctx, "/gateway/events/submit-result", result); postErr != nil {
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return result, postErr
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}
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return result, err
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}
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pool, err := m.connectionFor(cmd)
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if err != nil {
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result := submitResult(cmd, 0, "", "rejected", "CONNECT_FAILED", err.Error())
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if postErr := m.post(ctx, "/gateway/events/submit-result", result); postErr != nil {
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return result, postErr
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}
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return result, err
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}
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result, err := pool.submit(ctx, cmd)
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if err != nil {
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if postErr := m.post(ctx, "/gateway/events/submit-result", result); postErr != nil {
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return result, postErr
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}
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return result, err
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}
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if err := m.post(ctx, "/gateway/events/submit-result", result); err != nil {
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return result, err
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}
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return result, nil
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}
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func (m *Manager) connectionFor(cmd queue.SubmitCommand) (*connectionPool, error) {
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m.mu.Lock()
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defer m.mu.Unlock()
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if m.HTTPClient == nil {
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m.HTTPClient = &http.Client{Timeout: defaultHTTPTimeout}
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}
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if m.conns == nil {
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m.conns = make(map[string]*connectionPool)
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}
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pool := m.conns[cmd.ChannelID]
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if pool == nil || !pool.matches(cmd.Upstream) {
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if pool != nil {
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pool.close()
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}
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pool = &connectionPool{
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channelID: cmd.ChannelID,
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config: normalizeUpstreamConfig(cmd.Upstream),
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apiBaseURL: m.APIBaseURL,
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httpClient: m.HTTPClient,
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}
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m.conns[cmd.ChannelID] = pool
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}
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if err := pool.ensureConnected(); err != nil {
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delete(m.conns, cmd.ChannelID)
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return nil, err
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}
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return pool, nil
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}
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func (m *Manager) post(ctx context.Context, path string, payload any) error {
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client := m.HTTPClient
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if client == nil {
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client = &http.Client{Timeout: defaultHTTPTimeout}
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}
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return postJSON(ctx, client, m.APIBaseURL, path, payload)
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}
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type connectionPool struct {
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channelID string
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config queue.UpstreamConfig
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apiBaseURL string
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httpClient *http.Client
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mu sync.Mutex
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conns []*connection
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next int
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}
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func (p *connectionPool) matches(config queue.UpstreamConfig) bool {
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return p.config == normalizeUpstreamConfig(config)
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}
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func (p *connectionPool) ensureConnected() error {
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p.mu.Lock()
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defer p.mu.Unlock()
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desired := p.config.DesiredConnections
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if desired <= 0 {
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desired = 1
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}
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for len(p.conns) < desired {
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index := len(p.conns)
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conn := &connection{
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channelID: p.channelID,
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config: p.config,
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index: index,
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apiBaseURL: p.apiBaseURL,
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httpClient: p.httpClient,
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window: make(chan struct{}, p.config.WindowSize),
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pending: make(map[uint32]chan submitPartResponse),
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tracker: make(map[uint64]queue.SubmitCommand),
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longUplink: make(map[string]*longUplinkAssembly),
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}
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if err := conn.ensureConnected(); err != nil {
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conn.close()
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p.closeLocked()
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return err
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}
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p.conns = append(p.conns, conn)
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}
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return nil
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}
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func (p *connectionPool) submit(ctx context.Context, cmd queue.SubmitCommand) (queue.SubmitResult, error) {
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parts, err := splitSubmitContent(cmd.CMPP.MsgFmt, cmd.Content)
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if err != nil {
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result := submitResult(cmd, 0, "", "rejected", "ENCODE_FAILED", err.Error())
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return result, err
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}
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var firstSequence uint32
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var firstGatewayMessageID string
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segments := make([]queue.SubmitSegmentResult, 0, len(parts))
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for _, part := range parts {
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conn, release, err := p.acquireConnection(ctx)
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if err != nil {
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result := submitResult(cmd, 0, "", "timeout", "WINDOW_TIMEOUT", err.Error())
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result.Segments = segments
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return result, err
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}
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seq, gatewayMessageID, result, err := conn.submitPart(ctx, cmd, part)
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release()
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segments = append(segments, submitSegmentResult(part, seq, gatewayMessageID, result))
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if firstSequence == 0 {
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firstSequence = seq
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}
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if firstGatewayMessageID == "" {
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firstGatewayMessageID = gatewayMessageID
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}
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if err != nil {
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result.Segments = segments
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return result, err
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}
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if result.SubmitStatus != "accepted" {
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result.Segments = segments
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return result, nil
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}
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}
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result := submitResult(cmd, firstSequence, firstGatewayMessageID, "accepted", "", "")
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result.Segments = segments
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return result, nil
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}
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func (p *connectionPool) acquireConnection(ctx context.Context) (*connection, func(), error) {
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waitCtx, cancel := context.WithTimeout(ctx, defaultSubmitTimeout)
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defer cancel()
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ticker := time.NewTicker(10 * time.Millisecond)
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defer ticker.Stop()
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for {
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if conn, release := p.tryAcquireConnection(); conn != nil {
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if err := conn.ensureConnected(); err != nil {
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release()
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select {
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case <-waitCtx.Done():
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return nil, nil, waitCtx.Err()
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case <-ticker.C:
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continue
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}
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}
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return conn, release, nil
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}
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select {
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case <-waitCtx.Done():
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return nil, nil, waitCtx.Err()
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case <-ticker.C:
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}
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}
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}
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func (p *connectionPool) tryAcquireConnection() (*connection, func()) {
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p.mu.Lock()
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defer p.mu.Unlock()
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if len(p.conns) == 0 {
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return nil, nil
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}
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for i := 0; i < len(p.conns); i++ {
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index := (p.next + i) % len(p.conns)
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conn := p.conns[index]
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if conn.tryAcquireWindow() {
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p.next = (index + 1) % len(p.conns)
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return conn, conn.releaseWindow
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}
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}
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return nil, nil
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}
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func (p *connectionPool) close() {
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p.mu.Lock()
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defer p.mu.Unlock()
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p.closeLocked()
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}
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func (p *connectionPool) closeLocked() {
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for _, conn := range p.conns {
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conn.close()
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}
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p.conns = nil
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}
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type connection struct {
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channelID string
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config queue.UpstreamConfig
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index int
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apiBaseURL string
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httpClient *http.Client
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mu sync.Mutex
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sendMu sync.Mutex
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client *cmpp.Client
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window chan struct{}
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pending map[uint32]chan submitPartResponse
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tracker map[uint64]queue.SubmitCommand
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longUplink map[string]*longUplinkAssembly
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readOnce sync.Once
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closed bool
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}
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type submitPartResponse struct {
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rsp *cmpp.Cmpp3SubmitRspPkt
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err error
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}
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func (c *connection) matches(config queue.UpstreamConfig) bool {
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return c.config == normalizeUpstreamConfig(config)
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}
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func (c *connection) ensureConnected() error {
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c.mu.Lock()
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defer c.mu.Unlock()
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if c.client != nil && !c.closed {
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return nil
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}
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client := cmpp.NewClient(protocolVersion(c.config.CMPPVersion))
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addr := fmt.Sprintf("%s:%d", c.config.GatewayHost, c.config.GatewayPort)
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if err := client.Connect(addr, c.config.Account, c.config.PasswordCipher, defaultConnectTimeout); err != nil {
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client.Disconnect()
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return err
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}
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c.client = client
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c.closed = false
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go c.readLoop()
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return nil
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}
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func (c *connection) submitPart(ctx context.Context, cmd queue.SubmitCommand, part submitPart) (uint32, string, queue.SubmitResult, error) {
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rspCh := make(chan submitPartResponse, 1)
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pkt := &cmpp.Cmpp3SubmitReqPkt{
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PkTotal: part.PkTotal,
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PkNumber: part.PkNumber,
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TpUdhi: part.TpUdhi,
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RegisteredDelivery: uint8(cmd.CMPP.RegisteredDelivery),
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MsgLevel: 1,
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ServiceId: cmd.CMPP.ServiceID,
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FeeUserType: uint8(defaultInt(cmd.CMPP.FeeUserType, 2)),
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FeeTerminalId: cmd.PhoneNumber,
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MsgFmt: uint8(cmd.CMPP.MsgFmt),
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MsgSrc: c.config.Account,
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FeeType: defaultString(cmd.CMPP.FeeType, "02"),
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FeeCode: defaultString(cmd.CMPP.FeeCode, "0"),
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SrcId: cmd.CMPP.SrcID,
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DestUsrTl: 1,
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DestTerminalId: []string{cmd.PhoneNumber},
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MsgLength: uint8(len(part.MsgContent)),
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MsgContent: part.MsgContent,
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}
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c.sendMu.Lock()
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seq, err := c.client.SendReqPkt(pkt)
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c.sendMu.Unlock()
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if err != nil {
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c.close()
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result := submitResult(cmd, 0, "", "timeout", "SEND_FAILED", err.Error())
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return 0, "", result, err
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}
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c.mu.Lock()
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c.pending[seq] = rspCh
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c.mu.Unlock()
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defer func() {
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c.mu.Lock()
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delete(c.pending, seq)
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c.mu.Unlock()
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}()
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waitCtx, cancel := context.WithTimeout(ctx, defaultSubmitTimeout)
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defer cancel()
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select {
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case <-waitCtx.Done():
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result := submitResult(cmd, seq, "", "timeout", "SUBMIT_TIMEOUT", waitCtx.Err().Error())
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return seq, "", result, waitCtx.Err()
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case rsp := <-rspCh:
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if rsp.err != nil {
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result := submitResult(cmd, seq, "", "timeout", "CONNECTION_LOST", rsp.err.Error())
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return seq, "", result, rsp.err
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}
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if rsp.rsp == nil {
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err := fmt.Errorf("submit response is empty")
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result := submitResult(cmd, seq, "", "timeout", "EMPTY_SUBMIT_RESPONSE", err.Error())
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return seq, "", result, err
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}
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gatewayMessageID := fmt.Sprint(rsp.rsp.MsgId)
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status := "accepted"
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errorCode := ""
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errorMessage := ""
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if rsp.rsp.Result != 0 {
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status = "rejected"
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errorCode = fmt.Sprint(rsp.rsp.Result)
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errorMessage = fmt.Sprintf("upstream submit rejected with result %d", rsp.rsp.Result)
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}
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if rsp.rsp.Result == 0 {
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c.mu.Lock()
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c.tracker[rsp.rsp.MsgId] = cmd
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c.mu.Unlock()
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}
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return seq, gatewayMessageID, submitResult(cmd, seq, gatewayMessageID, status, errorCode, errorMessage), nil
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}
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}
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func (c *connection) tryAcquireWindow() bool {
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if c.window == nil {
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c.window = make(chan struct{}, defaultWindowSize)
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}
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select {
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case c.window <- struct{}{}:
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return true
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default:
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return false
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}
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}
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func (c *connection) releaseWindow() {
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if c.window == nil {
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return
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}
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select {
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case <-c.window:
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default:
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}
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}
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func (c *connection) readLoop() {
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for {
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pkt, err := c.client.RecvAndUnpackPkt(time.Second)
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if err != nil {
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c.mu.Lock()
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closed := c.closed
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c.mu.Unlock()
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if closed {
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return
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}
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if isTemporaryReadTimeout(err) {
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continue
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}
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c.handleConnectionLoss(err)
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continue
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}
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switch p := pkt.(type) {
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case *cmpp.Cmpp3SubmitRspPkt:
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c.mu.Lock()
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ch := c.pending[p.SeqId]
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c.mu.Unlock()
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if ch != nil {
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ch <- submitPartResponse{rsp: p}
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}
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case *cmpp.Cmpp3DeliverReqPkt:
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c.handleDeliver(p)
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case *cmpp.CmppActiveTestReqPkt:
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_ = c.client.SendRspPkt(&cmpp.CmppActiveTestRspPkt{}, p.SeqId)
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}
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}
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}
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func (c *connection) handleDeliver(pkt *cmpp.Cmpp3DeliverReqPkt) {
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_ = c.client.SendRspPkt(&cmpp.Cmpp3DeliverRspPkt{MsgId: pkt.MsgId, Result: 0}, pkt.SeqId)
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if pkt.RegisterDelivery == 1 {
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var receipt cmpp.CmppReceiptPkt
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if err := receipt.Unpack([]byte(pkt.MsgContent)); err != nil {
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return
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}
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cmd, ok := c.commandFor(receipt.MsgId)
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if !ok {
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cmd, ok = c.commandFor(pkt.MsgId)
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}
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traceID := fmt.Sprintf("receipt-%d", receipt.MsgId)
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messageID := fmt.Sprintf("receipt-%d", receipt.MsgId)
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channelID := c.channelID
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if ok {
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traceID = cmd.TraceID
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messageID = cmd.MessageID
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channelID = cmd.ChannelID
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}
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event := queue.ReceiptEvent{
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Envelope: queue.Envelope{
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SchemaVersion: queue.SchemaVersion,
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MessageType: queue.MessageTypeReceiptEvent,
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TraceID: traceID,
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MessageID: messageID,
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ChannelID: channelID,
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CreatedAt: time.Now().UTC(),
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},
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SequenceID: pkt.SeqId,
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GatewayMessageID: fmt.Sprint(receipt.MsgId),
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PhoneNumber: strings.TrimSpace(receipt.DestTerminalId),
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ReceiptStatus: receiptStatus(receipt.Stat),
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RawStatus: strings.TrimSpace(receipt.Stat),
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DeliveredAt: time.Now().UTC(),
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}
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_ = postJSON(context.Background(), c.httpClient, c.apiBaseURL, "/gateway/events/receipt", event)
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return
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}
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content, complete, err := c.decodeUplinkContent(pkt)
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if err != nil {
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return
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}
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if !complete {
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return
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}
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cmd, _ := c.commandFor(pkt.MsgId)
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event := queue.UplinkEvent{
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Envelope: queue.Envelope{
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SchemaVersion: queue.SchemaVersion,
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MessageType: queue.MessageTypeUplinkEvent,
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TraceID: cmd.TraceID,
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MessageID: cmd.MessageID,
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ChannelID: c.channelID,
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CreatedAt: time.Now().UTC(),
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},
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SequenceID: pkt.SeqId,
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PhoneNumber: strings.TrimSpace(pkt.SrcTerminalId),
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DestID: strings.TrimSpace(pkt.DestId),
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Content: content,
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ReceivedAt: time.Now().UTC(),
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}
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_ = postJSON(context.Background(), c.httpClient, c.apiBaseURL, "/gateway/events/uplink", event)
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}
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func (c *connection) decodeUplinkContent(pkt *cmpp.Cmpp3DeliverReqPkt) (string, bool, error) {
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if pkt.TpUdhi != 1 {
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content, err := decodeContent(pkt.MsgFmt, pkt.MsgContent)
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return content, true, err
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}
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ref, total, number, payload, ok := parseConcatSegment(pkt.MsgContent)
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if !ok {
|
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content, err := decodeContent(pkt.MsgFmt, pkt.MsgContent)
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return content, true, err
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}
|
||||
key := fmt.Sprintf("%s:%s:%s:%d:%d", c.channelID, strings.TrimSpace(pkt.SrcTerminalId), strings.TrimSpace(pkt.DestId), ref, total)
|
||||
c.mu.Lock()
|
||||
if c.longUplink == nil {
|
||||
c.longUplink = make(map[string]*longUplinkAssembly)
|
||||
}
|
||||
pruneLongUplinkAssemblies(c.longUplink, time.Now(), 10*time.Minute)
|
||||
content, complete, err := assembleLongUplink(c.longUplink, key, pkt.MsgFmt, total, number, payload)
|
||||
c.mu.Unlock()
|
||||
return content, complete, err
|
||||
}
|
||||
|
||||
func (c *connection) commandFor(gatewayMsgID uint64) (queue.SubmitCommand, bool) {
|
||||
c.mu.Lock()
|
||||
defer c.mu.Unlock()
|
||||
cmd, ok := c.tracker[gatewayMsgID]
|
||||
return cmd, ok
|
||||
}
|
||||
|
||||
func (c *connection) close() {
|
||||
c.handleConnectionLoss(fmt.Errorf("connection closed"))
|
||||
}
|
||||
|
||||
func (c *connection) handleConnectionLoss(err error) {
|
||||
c.mu.Lock()
|
||||
if c.closed && c.client == nil {
|
||||
c.mu.Unlock()
|
||||
return
|
||||
}
|
||||
c.closed = true
|
||||
pending := c.pending
|
||||
c.pending = make(map[uint32]chan submitPartResponse)
|
||||
if c.client != nil {
|
||||
c.client.Disconnect()
|
||||
c.client = nil
|
||||
}
|
||||
c.mu.Unlock()
|
||||
|
||||
for _, ch := range pending {
|
||||
select {
|
||||
case ch <- submitPartResponse{err: err}:
|
||||
default:
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func submitResult(cmd queue.SubmitCommand, sequenceID uint32, gatewayMessageID string, status string, code string, message string) queue.SubmitResult {
|
||||
if gatewayMessageID == "" {
|
||||
gatewayMessageID = fmt.Sprintf("GW-%s-%d", cmd.SubmitID, time.Now().UnixNano())
|
||||
}
|
||||
return queue.SubmitResult{
|
||||
Envelope: queue.Envelope{
|
||||
SchemaVersion: queue.SchemaVersion,
|
||||
MessageType: queue.MessageTypeSubmitResult,
|
||||
TraceID: cmd.TraceID,
|
||||
MessageID: cmd.MessageID,
|
||||
ChannelID: cmd.ChannelID,
|
||||
CreatedAt: time.Now().UTC(),
|
||||
},
|
||||
SequenceID: sequenceID,
|
||||
GatewayMessageID: gatewayMessageID,
|
||||
SubmitStatus: status,
|
||||
ErrorCode: code,
|
||||
ErrorMessage: message,
|
||||
SubmittedAt: time.Now().UTC(),
|
||||
}
|
||||
}
|
||||
|
||||
func submitSegmentResult(part submitPart, sequenceID uint32, gatewayMessageID string, result queue.SubmitResult) queue.SubmitSegmentResult {
|
||||
if gatewayMessageID == "" {
|
||||
gatewayMessageID = result.GatewayMessageID
|
||||
}
|
||||
return queue.SubmitSegmentResult{
|
||||
SegmentTotal: int(part.PkTotal),
|
||||
SegmentIndex: int(part.PkNumber),
|
||||
SequenceID: sequenceID,
|
||||
GatewayMessageID: gatewayMessageID,
|
||||
SubmitStatus: result.SubmitStatus,
|
||||
ErrorCode: result.ErrorCode,
|
||||
ErrorMessage: result.ErrorMessage,
|
||||
SubmittedAt: result.SubmittedAt,
|
||||
}
|
||||
}
|
||||
|
||||
func validateSubmitCommand(cmd queue.SubmitCommand) error {
|
||||
if cmd.MessageType != queue.MessageTypeSubmitCommand {
|
||||
return fmt.Errorf("unsupported messageType %q", cmd.MessageType)
|
||||
}
|
||||
if cmd.MessageID == "" || cmd.ChannelID == "" || cmd.SubmitID == "" {
|
||||
return fmt.Errorf("messageId, channelId and submitId are required")
|
||||
}
|
||||
if cmd.Upstream.GatewayHost == "" || cmd.Upstream.GatewayPort <= 0 {
|
||||
return fmt.Errorf("upstream gatewayHost and gatewayPort are required")
|
||||
}
|
||||
if cmd.Upstream.Account == "" || cmd.Upstream.PasswordCipher == "" {
|
||||
return fmt.Errorf("upstream account and passwordCipher are required")
|
||||
}
|
||||
if len(cmd.PhoneNumber) == 0 || len(cmd.Content) == 0 {
|
||||
return fmt.Errorf("phoneNumber and content are required")
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func normalizeUpstreamConfig(config queue.UpstreamConfig) queue.UpstreamConfig {
|
||||
if config.DesiredConnections <= 0 {
|
||||
config.DesiredConnections = 1
|
||||
}
|
||||
if config.WindowSize <= 0 {
|
||||
config.WindowSize = defaultWindowSize
|
||||
}
|
||||
return config
|
||||
}
|
||||
|
||||
func isTemporaryReadTimeout(err error) bool {
|
||||
var netErr net.Error
|
||||
return errors.As(err, &netErr) && netErr.Timeout()
|
||||
}
|
||||
|
||||
func postJSON(ctx context.Context, client *http.Client, apiBaseURL string, path string, payload any) error {
|
||||
if client == nil {
|
||||
client = &http.Client{Timeout: defaultHTTPTimeout}
|
||||
}
|
||||
body, err := json.Marshal(payload)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
base := strings.TrimRight(apiBaseURL, "/")
|
||||
if base == "" {
|
||||
base = "http://127.0.0.1:3000/api"
|
||||
}
|
||||
req, err := http.NewRequestWithContext(ctx, http.MethodPost, base+path, bytes.NewReader(body))
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
req.Header.Set("Content-Type", "application/json")
|
||||
resp, err := client.Do(req)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
defer resp.Body.Close()
|
||||
if resp.StatusCode < 200 || resp.StatusCode >= 300 {
|
||||
return fmt.Errorf("api returned %s", resp.Status)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func encodeContent(format int, content string) (string, error) {
|
||||
switch format {
|
||||
case 8:
|
||||
return cmpputils.Utf8ToUcs2(content)
|
||||
case 15:
|
||||
return cmpputils.Utf8ToGB18030(content)
|
||||
default:
|
||||
return content, nil
|
||||
}
|
||||
}
|
||||
|
||||
func decodeContent(format uint8, content string) (string, error) {
|
||||
switch format {
|
||||
case 8:
|
||||
return cmpputils.Ucs2ToUtf8(content)
|
||||
case 15:
|
||||
return cmpputils.GB18030ToUtf8(content)
|
||||
default:
|
||||
return content, nil
|
||||
}
|
||||
}
|
||||
|
||||
func protocolVersion(version string) cmpp.Type {
|
||||
if strings.HasPrefix(version, "2") {
|
||||
return cmpp.V20
|
||||
}
|
||||
return cmpp.V30
|
||||
}
|
||||
|
||||
func receiptStatus(stat string) string {
|
||||
switch strings.ToUpper(strings.TrimSpace(stat)) {
|
||||
case "DELIVRD":
|
||||
return "delivered"
|
||||
case "":
|
||||
return "unknown"
|
||||
default:
|
||||
return "undelivered"
|
||||
}
|
||||
}
|
||||
|
||||
func defaultString(value string, fallback string) string {
|
||||
if value == "" {
|
||||
return fallback
|
||||
}
|
||||
return value
|
||||
}
|
||||
|
||||
func defaultInt(value int, fallback int) int {
|
||||
if value == 0 {
|
||||
return fallback
|
||||
}
|
||||
return value
|
||||
}
|
||||
Reference in New Issue
Block a user