Changes
2 changed files (+228/-0)
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client/client.go (new)
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@@ -0,0 +1,157 @@package client import ( "fmt" "io" "io/ioutil" "net/http" "net/url" as "github.com/mariusor/activitypub.go/activitystreams" ) type signFn func(*http.Request) error type logFn func(...interface{}) // UserAgent value that the client uses when performing requests var UserAgent = "activitypub-go-http-client" // ErrorLogger var ErrorLogger logFn = func(el ...interface{}) {} // InfoLogger var InfoLogger logFn = func(el ...interface{}) {} // Sign is the default function to use when signing requests // Usually this is done using HTTP-Signatures // See https://github.com/spacemonkeygo/httpsig // var key *rsa.PrivateKey = ... // signer := httpsig.NewSigner("foo", key, httpsig.RSASHA256, nil) // client.Sign = signer.Sign var Sign signFn = func(r *http.Request) error { return nil } type err struct { msg string iri as.IRI } func errorf(i as.IRI, msg string, p ...interface{}) error { return &err{ msg: fmt.Sprintf(msg, p...), iri: i, } } // Error returns the formatted error func (e *err) Error() string { if len(e.iri) > 0 { return fmt.Sprintf("%s\nwhen loading: %s", e.msg, e.iri) } else { return fmt.Sprintf("%s", e.msg) } } type client struct{} func NewClient() client { return client{} } // LoadIRI tries to dereference an IRI and load the full ActivityPub object it represents func (c *client) LoadIRI(id as.IRI) (as.Item, error) { if len(id) == 0 { return nil, errorf(id, "Invalid IRI, nil value") } if _, err := url.ParseRequestURI(id.String()); err != nil { return nil, errorf(id, "Invalid IRI: %s", err) } var err error var obj as.Item var resp *http.Response if resp, err = c.Get(id.String()); err != nil { ErrorLogger(err.Error()) return obj, err } if resp == nil { err := errorf(id, "Unable to load from the AP end point: nil response") ErrorLogger(err) return obj, err } if resp.StatusCode != http.StatusOK { err := errorf(id, "Unable to load from the AP end point: invalid status %d", resp.StatusCode) ErrorLogger(err) return obj, err } defer resp.Body.Close() var body []byte if body, err = ioutil.ReadAll(resp.Body); err != nil { ErrorLogger(err) return obj, err } return as.UnmarshalJSON(body) } func (c *client) req(method string, url string, body io.Reader) (*http.Request, error) { req, err := http.NewRequest(method, url, body) if err != nil { return nil, err } req.Header.Set("User-Agent", UserAgent) //req.Header.Set("Cache-Control", "no-cache") if err = Sign(req); err != nil { err := errorf(as.IRI(req.URL.String()), "Unable to sign request (method %q, previous error: %s)", req.Method, err) return req, err } return req, nil } // Head func (c client) Head(url string) (resp *http.Response, err error) { req, err := c.req(http.MethodHead, url, nil) if err != nil { return nil, err } return http.DefaultClient.Do(req) } // Get wrapper over the functionality offered by the default http.Client object func (c client) Get(url string) (resp *http.Response, err error) { req, err := c.req(http.MethodGet, url, nil) if err != nil { return nil, err } return http.DefaultClient.Do(req) } // Post wrapper over the functionality offered by the default http.Client object func (c *client) Post(url, contentType string, body io.Reader) (resp *http.Response, err error) { req, err := c.req(http.MethodPost, url, body) if err != nil { return nil, err } req.Header.Set("Content-Type", contentType) return http.DefaultClient.Do(req) } // Put wrapper over the functionality offered by the default http.Client object func (c client) Put(url, contentType string, body io.Reader) (resp *http.Response, err error) { req, err := c.req(http.MethodPut, url, body) if err != nil { return nil, err } req.Header.Set("Content-Type", contentType) return http.DefaultClient.Do(req) } // Delete wrapper over the functionality offered by the default http.Client object func (c client) Delete(url, contentType string, body io.Reader) (resp *http.Response, err error) { req, err := c.req(http.MethodDelete, url, body) if err != nil { return nil, err } req.Header.Set("Content-Type", contentType) return http.DefaultClient.Do(req) }
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client/client_test.go (new)
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@@ -0,0 +1,71 @@package client import ( "strings" "testing" as "github.com/mariusor/activitypub.go/activitystreams" ) func TestNewClient(t *testing.T) { c := client{} if c != NewClient() { t.Errorf("NewClient didn't return a valid client") } } func TestErr_Error(t *testing.T) { e := err{ msg: "test", iri: as.IRI(""), } if len(e.Error()) == 0 { t.Errorf("error message should not be empty") } if !strings.Contains(e.Error(), "test") { t.Errorf("error message should contain the 'test' string") } } func TestClient_LoadIRI(t *testing.T) { empty := as.IRI("") c := NewClient() var err error _, err = c.LoadIRI(empty) if err == nil { t.Errorf("LoadIRI should have failed when using empty IRI value") } else { t.Logf("Valid error received: %s", err) } inv := as.IRI("example.com") _, err = c.LoadIRI(inv) if err == nil { t.Errorf("LoadIRI should have failed when using invalid http url") } else { t.Logf("Valid error received: %s", err) } } func TestClient_Get(t *testing.T) { } func TestClient_Head(t *testing.T) { } func TestClient_Post(t *testing.T) { } func TestClient_Put(t *testing.T) { } func TestClient_Delete(t *testing.T) { }
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