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Implement op-node/op-batcher frax DA
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,73 @@ | ||
| package fraxda | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "net/url" | ||
|
|
||
| "github.com/urfave/cli/v2" | ||
|
|
||
| opservice "github.com/ethereum-optimism/optimism/op-service" | ||
| ) | ||
|
|
||
| const ( | ||
| DaRpcFlagName = "da.rpc" | ||
| ) | ||
|
|
||
| var ( | ||
| defaultDaRpc = "https://da-rpc.mainnet.frax.com" | ||
| ) | ||
|
|
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| func CLIFlags(envPrefix string) []cli.Flag { | ||
| return []cli.Flag{ | ||
| &cli.StringFlag{ | ||
| Name: DaRpcFlagName, | ||
| Usage: "DA endpoint", | ||
| Value: defaultDaRpc, | ||
| EnvVars: opservice.PrefixEnvVar(envPrefix, "DA_RPC"), | ||
| }, | ||
| } | ||
| } | ||
|
|
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| type Config struct { | ||
| DaRpc string | ||
| } | ||
|
|
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| func (c Config) Check() error { | ||
| if c.DaRpc == "" { | ||
| c.DaRpc = defaultDaRpc | ||
| } | ||
|
|
||
| if _, err := url.Parse(c.DaRpc); err != nil { | ||
| return fmt.Errorf("invalid da rpc url: %w", err) | ||
| } | ||
|
|
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| return nil | ||
| } | ||
|
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| type CLIConfig struct { | ||
| DaRpc string | ||
| } | ||
|
|
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| func (c CLIConfig) Check() error { | ||
| if c.DaRpc == "" { | ||
| c.DaRpc = defaultDaRpc | ||
| } | ||
|
|
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| if _, err := url.Parse(c.DaRpc); err != nil { | ||
| return fmt.Errorf("invalid da rpc url: %w", err) | ||
| } | ||
|
|
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| return nil | ||
| } | ||
|
|
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| func NewCLIConfig() CLIConfig { | ||
| return CLIConfig{ | ||
| DaRpc: defaultDaRpc, | ||
| } | ||
| } | ||
|
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| func ReadCLIConfig(ctx *cli.Context) CLIConfig { | ||
| return CLIConfig{ | ||
| DaRpc: ctx.String(DaRpcFlagName), | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,103 @@ | ||
| package fraxda | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "context" | ||
| "encoding/json" | ||
| "fmt" | ||
| "io" | ||
| "net/http" | ||
| "net/url" | ||
| "time" | ||
|
|
||
| "github.com/multiformats/go-multibase" | ||
| ) | ||
|
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| type DAClient struct { | ||
| baseUrl *url.URL | ||
| httpClient *http.Client | ||
| } | ||
|
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| func NewDAClient(rpc string) (*DAClient, error) { | ||
| baseUrl, err := url.Parse(rpc) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("unable to parse DA endpoint: %s", err) | ||
| } | ||
|
|
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| httpClient := &http.Client{ | ||
| Timeout: 30 * time.Second, | ||
| } | ||
|
|
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| return &DAClient{ | ||
| baseUrl: baseUrl, | ||
| httpClient: httpClient, | ||
| }, nil | ||
| } | ||
|
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| func (c DAClient) Read(ctx context.Context, id []byte) ([]byte, error) { | ||
| ipfsCID, err := multibase.Encode(multibase.Base32, id) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("unable to decode CID: %w", err) | ||
| } | ||
|
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| fetchUrl := c.baseUrl.ResolveReference(&url.URL{Path: fmt.Sprintf("/v1/blobs/%s", ipfsCID)}) | ||
| request, err := http.NewRequestWithContext(ctx, "GET", fetchUrl.String(), nil) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("unable to create request to fetch data from DA: %w", err) | ||
| } | ||
| resp, err := c.httpClient.Do(request) | ||
|
|
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| if err != nil { | ||
| return nil, fmt.Errorf("unable to fetch DA data: %w", err) | ||
| } | ||
| if resp.StatusCode != 200 { | ||
| return nil, fmt.Errorf("unable to fetch DA data, got status code %d", resp.StatusCode) | ||
| } | ||
|
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| body, err := io.ReadAll(resp.Body) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("unable to read DA data fetch response: %w", err) | ||
| } | ||
|
|
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| return body, nil | ||
| } | ||
|
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| func (c DAClient) Write(ctx context.Context, data []byte) ([]byte, error) { | ||
| submitUrl := c.baseUrl.ResolveReference(&url.URL{Path: "/v1/blobs"}) | ||
|
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| request, err := http.NewRequestWithContext(ctx, "POST", submitUrl.String(), bytes.NewBuffer(data)) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("unable to create request to submit data to DA: %w", err) | ||
| } | ||
|
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| resp, err := c.httpClient.Do(request) | ||
|
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| if err != nil { | ||
| return nil, fmt.Errorf("unable to submit data to DA: %w", err) | ||
| } | ||
| if resp.StatusCode > 299 { | ||
| return nil, fmt.Errorf("unable to submit data to DA, got status code %d", resp.StatusCode) | ||
| } | ||
|
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| body, err := io.ReadAll(resp.Body) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("unable to read DA data submit response: %w", err) | ||
| } | ||
|
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| var respDto daSubmitResponse | ||
| err = json.Unmarshal(body, &respDto) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("unable to parse DA data submit response json: %w", err) | ||
| } | ||
|
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| if respDto.ID == "" { | ||
| return nil, fmt.Errorf("DA data submit response returned empty ID") | ||
| } | ||
|
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| _, ipfsCID, err := multibase.Decode(respDto.ID) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("DA data submit response returned invalid multibase encoded value: %w", err) | ||
| } | ||
|
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||
| return ipfsCID, nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,4 @@ | ||
| package fraxda | ||
|
|
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| // DerivationVersionFraxDa is a byte prefix of frax DA based references | ||
| const DerivationVersionFraxDa = 0xfc |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,5 @@ | ||
| package fraxda | ||
|
|
||
| type daSubmitResponse struct { | ||
| ID string `json:"id"` | ||
| } |
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