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@ -1,11 +1,8 @@
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package client
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package client
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import (
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import (
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"bytes"
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"encoding/binary"
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"encoding/binary"
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"encoding/json"
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"fmt"
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"fmt"
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"log"
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"net/http"
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"net/http"
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"time"
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"time"
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@ -18,7 +15,6 @@ type Client struct {
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httpClient *http.Client
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httpClient *http.Client
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prefix uint16
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prefix uint16
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gen *generation.Generator
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gen *generation.Generator
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domain string // e.g. https://sho.rt
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db *bolt.DB
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db *bolt.DB
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retryQueue chan shortenJob
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retryQueue chan shortenJob
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@ -26,13 +22,13 @@ type Client struct {
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}
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}
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// NewClient with persistence and retry queue
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// NewClient with persistence and retry queue
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func NewClient(serverURL, domain string) (*Client, error) {
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func NewClient(serverURL string, folder string) (*Client, error) {
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httpClient, baseURL, err := createHTTPClient(serverURL)
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httpClient, baseURL, err := createHTTPClient(serverURL)
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if err != nil {
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if err != nil {
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return nil, err
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return nil, err
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}
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}
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db, err := bolt.Open(dbFileName, 0600, &bolt.Options{Timeout: 1 * time.Second})
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db, err := bolt.Open(folder+"/"+dbFileName, 0600, &bolt.Options{Timeout: 1 * time.Second})
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if err != nil {
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if err != nil {
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return nil, err
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return nil, err
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}
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}
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@ -40,7 +36,6 @@ func NewClient(serverURL, domain string) (*Client, error) {
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cli := &Client{
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cli := &Client{
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serverURL: baseURL,
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serverURL: baseURL,
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httpClient: httpClient,
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httpClient: httpClient,
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domain: domain,
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db: db,
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db: db,
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retryQueue: make(chan shortenJob, 1000),
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retryQueue: make(chan shortenJob, 1000),
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stopRetry: make(chan struct{}),
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stopRetry: make(chan struct{}),
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@ -109,27 +104,10 @@ func NewClient(serverURL, domain string) (*Client, error) {
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func (c *Client) Shorten(longURL string) string {
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func (c *Client) Shorten(longURL string) string {
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shortID := c.gen.NextID()
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shortID := c.gen.NextID()
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go func() {
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go c.enqueueJob(shortenJob{
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payload := map[string]string{
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ID: shortID,
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"id": shortID,
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URL: longURL,
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"url": longURL,
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})
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}
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data, _ := json.Marshal(payload)
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req, err := http.NewRequest("POST", fmt.Sprintf("%s/shorten", c.serverURL), bytes.NewReader(data))
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return shortID
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if err != nil {
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log.Println("shorten request build error:", err)
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return
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}
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req.Header.Set("Content-Type", "application/json")
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resp, err := c.httpClient.Do(req)
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if err != nil {
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log.Println("shorten request failed:", err)
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return
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}
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defer resp.Body.Close()
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}()
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return fmt.Sprintf("%s/%s", c.domain, shortID)
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}
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}
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@ -1,11 +1,13 @@
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package client
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package client
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import (
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import (
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"bytes"
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"encoding/binary"
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"encoding/json"
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"encoding/json"
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"fmt"
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"fmt"
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"io"
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"log"
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"log"
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"net/http"
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"net/http"
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"strings"
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"time"
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"time"
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bolt "go.etcd.io/bbolt"
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bolt "go.etcd.io/bbolt"
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@ -23,19 +25,18 @@ type shortenJob struct {
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}
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}
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func (c *Client) registerPrefix() (uint16, error) {
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func (c *Client) registerPrefix() (uint16, error) {
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resp, err := c.httpClient.Post(fmt.Sprintf("%s/register", c.serverURL), "application/json", nil)
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resp, err := c.httpClient.Get(fmt.Sprintf("%s/register", c.serverURL))
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if err != nil {
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if err != nil {
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return 0, err
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return 0, err
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}
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}
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defer resp.Body.Close()
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defer resp.Body.Close()
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var result struct {
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bytes, err := io.ReadAll(resp.Body)
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Prefix uint16 `json:"prefix"`
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if err != nil {
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}
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if err := json.NewDecoder(resp.Body).Decode(&result); err != nil {
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return 0, err
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return 0, err
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}
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}
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return result.Prefix, nil
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return binary.LittleEndian.Uint16(bytes), nil
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}
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}
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func (c *Client) loadRetryJobs() {
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func (c *Client) loadRetryJobs() {
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@ -108,18 +109,10 @@ func (c *Client) deleteJobFromDB(job shortenJob) {
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}
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}
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func (c *Client) sendShortenJob(job shortenJob) error {
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func (c *Client) sendShortenJob(job shortenJob) error {
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payload := map[string]string{
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req, err := http.NewRequest("POST", fmt.Sprintf("%s/shorten?s=%s", c.serverURL, job.ID), strings.NewReader(job.URL))
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"id": job.ID,
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"url": job.URL,
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}
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data, _ := json.Marshal(payload)
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req, err := http.NewRequest("POST", fmt.Sprintf("%s/shorten", c.serverURL), bytes.NewReader(data))
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if err != nil {
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if err != nil {
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return err
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return err
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}
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}
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req.Header.Set("Content-Type", "application/json")
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resp, err := c.httpClient.Do(req)
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resp, err := c.httpClient.Do(req)
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if err != nil {
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if err != nil {
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return err
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return err
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