gamertan
92a66db3df
Export the reviewed allowlisted snapshot from private source commit 05928cebd01b586cf9e9d4b8c8537a7605a6068c. This records the exact candidate, bounded capacity result, stateful migration scratch requirement, authenticated batch identity proof, and immediate live acceptance evidence. AI-Assisted: OpenAI Codex Signed-off-by: Cole Speelman <crspeelman@gmail.com>
75 lines
3.1 KiB
Go
75 lines
3.1 KiB
Go
// SPDX-License-Identifier: AGPL-3.0-only
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package nativeprotocol
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import (
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"errors"
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"net/http"
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"strconv"
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"time"
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"gamertan.com/observatory/internal/model"
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)
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const (
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VersionHeader = "Observatory-Batch-Version"
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StreamHeader = "Observatory-Stream-ID"
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SequenceHeader = "Observatory-Sequence"
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SignalHeader = "Observatory-Signal"
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WireDigestHeader = "Observatory-Wire-SHA256"
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BatchDigestHeader = "Observatory-Batch-SHA256"
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RecordCountHeader = "Observatory-Record-Count"
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EncodedBytesHeader = "Observatory-Encoded-Bytes"
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FirstObservedHeader = "Observatory-First-Observed-At"
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LastObservedHeader = "Observatory-Last-Observed-At"
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)
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var envelopeHeaders = []string{
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VersionHeader, StreamHeader, SequenceHeader, SignalHeader,
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WireDigestHeader, BatchDigestHeader, RecordCountHeader,
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EncodedBytesHeader, FirstObservedHeader, LastObservedHeader,
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}
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func SetHeaders(header http.Header, envelope model.BatchEnvelope) {
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header.Set(VersionHeader, strconv.Itoa(envelope.Version))
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header.Set(StreamHeader, envelope.StreamID)
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header.Set(SequenceHeader, strconv.FormatUint(envelope.Sequence, 10))
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header.Set(SignalHeader, string(envelope.Signal))
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header.Set(WireDigestHeader, envelope.WireDigest)
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header.Set(BatchDigestHeader, envelope.BatchDigest)
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header.Set(RecordCountHeader, strconv.Itoa(envelope.RecordCount))
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header.Set(EncodedBytesHeader, strconv.FormatInt(envelope.EncodedBytes, 10))
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header.Set(FirstObservedHeader, envelope.FirstObservedAt.UTC().Format(time.RFC3339Nano))
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header.Set(LastObservedHeader, envelope.LastObservedAt.UTC().Format(time.RFC3339Nano))
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}
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func ParseHeaders(header http.Header, maxEncodedBytes int64) (model.BatchEnvelope, error) {
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values := make(map[string]string, len(envelopeHeaders))
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for _, name := range envelopeHeaders {
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items := header.Values(name)
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if len(items) != 1 || items[0] == "" {
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return model.BatchEnvelope{}, errors.New("native batch envelope headers are incomplete")
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}
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values[name] = items[0]
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}
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version, versionErr := strconv.Atoi(values[VersionHeader])
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sequence, sequenceErr := strconv.ParseUint(values[SequenceHeader], 10, 64)
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recordCount, recordErr := strconv.Atoi(values[RecordCountHeader])
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encodedBytes, bytesErr := strconv.ParseInt(values[EncodedBytesHeader], 10, 64)
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first, firstErr := time.Parse(time.RFC3339Nano, values[FirstObservedHeader])
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last, lastErr := time.Parse(time.RFC3339Nano, values[LastObservedHeader])
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if versionErr != nil || sequenceErr != nil || recordErr != nil || bytesErr != nil || firstErr != nil || lastErr != nil {
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return model.BatchEnvelope{}, errors.New("native batch envelope headers are invalid")
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}
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envelope := model.BatchEnvelope{
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Version: version, StreamID: values[StreamHeader], Sequence: sequence,
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Signal: model.Signal(values[SignalHeader]), WireDigest: values[WireDigestHeader],
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BatchDigest: values[BatchDigestHeader], RecordCount: recordCount,
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EncodedBytes: encodedBytes, FirstObservedAt: first.UTC(), LastObservedAt: last.UTC(),
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}
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if err := envelope.Validate(maxEncodedBytes); err != nil {
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return model.BatchEnvelope{}, errors.New("native batch envelope headers are invalid")
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}
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return envelope, nil
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}
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