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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,116 @@ | ||
package client | ||
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import ( | ||
"bytes" | ||
"context" | ||
"fmt" | ||
"io" | ||
"net/http" | ||
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"github.com/Layr-Labs/eigenda-proxy/common" | ||
"github.com/Layr-Labs/eigenda-proxy/eigenda" | ||
"github.com/ethereum/go-ethereum/rlp" | ||
) | ||
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type Config struct { | ||
URL string | ||
} | ||
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type ProxyClient interface { | ||
Health() error | ||
GetData(ctx context.Context, blobInfo *common.BlobInfo, domain common.DomainType) ([]byte, error) | ||
SetData(ctx context.Context, b []byte) (*common.BlobInfo, error) | ||
} | ||
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type client struct { | ||
cfg *Config | ||
httpClient *http.Client | ||
} | ||
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func New(cfg *Config) ProxyClient { | ||
return &client{ | ||
cfg, | ||
http.DefaultClient, | ||
} | ||
} | ||
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func (c *client) Health() error { | ||
url := c.cfg.URL + "/health" | ||
req, err := http.NewRequest(http.MethodGet, url, nil) | ||
if err != nil { | ||
return err | ||
} | ||
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resp, err := c.httpClient.Do(req) | ||
if err != nil { | ||
return err | ||
} | ||
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if resp.StatusCode != http.StatusOK { | ||
return fmt.Errorf("received bad status code: %d", resp.StatusCode) | ||
} | ||
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return nil | ||
} | ||
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func (c *client) GetData(ctx context.Context, info *common.BlobInfo, domain common.DomainType) ([]byte, error) { | ||
b, err := rlp.EncodeToBytes(info) | ||
if err != nil { | ||
return nil, err | ||
} | ||
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b = eigenda.Commitment(b).Encode() | ||
b = append([]byte{byte(0x1)}, b...) | ||
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url := fmt.Sprintf("%s/get/0x%x?domain=%s", c.cfg.URL, b, domain.String()) | ||
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req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil) | ||
if err != nil { | ||
return nil, fmt.Errorf("failed to construct http request: %e", err) | ||
} | ||
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resp, err := c.httpClient.Do(req) | ||
if err != nil { | ||
return nil, err | ||
} | ||
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defer resp.Body.Close() | ||
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if resp.StatusCode != http.StatusOK { | ||
return nil, fmt.Errorf("received unexpected response code: %d", resp.StatusCode) | ||
} | ||
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return io.ReadAll(resp.Body) | ||
} | ||
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func (c *client) SetData(ctx context.Context, b []byte) (*common.BlobInfo, error) { | ||
body := bytes.NewReader(b) | ||
url := fmt.Sprintf("%s/put/", c.cfg.URL) | ||
req, err := http.NewRequestWithContext(ctx, http.MethodPost, url, body) | ||
if err != nil { | ||
return nil, fmt.Errorf("failed to create HTTP request: %w", err) | ||
} | ||
req.Header.Set("Content-Type", "application/octet-stream") | ||
resp, err := http.DefaultClient.Do(req) | ||
if err != nil { | ||
return nil, err | ||
} | ||
defer resp.Body.Close() | ||
if resp.StatusCode != http.StatusOK { | ||
return nil, fmt.Errorf("failed to store data: %v", resp.StatusCode) | ||
} | ||
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b, err = io.ReadAll(resp.Body) | ||
if err != nil { | ||
return nil, err | ||
} | ||
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b = b[2:] | ||
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var blob *common.BlobInfo | ||
if err = rlp.DecodeBytes(b, &blob); err != nil { | ||
return nil, err | ||
} | ||
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return blob, err | ||
} |
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