33 lines
1.7 KiB
JavaScript
33 lines
1.7 KiB
JavaScript
import { AwsCrc32c } from "@aws-crypto/crc32c";
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import { Crc64Nvme, crc64NvmeCrtContainer } from "@aws-sdk/crc64-nvme";
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import { ChecksumAlgorithm } from "./constants";
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import { getCrc32ChecksumAlgorithmFunction } from "./getCrc32ChecksumAlgorithmFunction";
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import { CLIENT_SUPPORTED_ALGORITHMS } from "./types";
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export const selectChecksumAlgorithmFunction = (checksumAlgorithm, config) => {
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const { checksumAlgorithms = {} } = config;
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switch (checksumAlgorithm) {
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case ChecksumAlgorithm.MD5:
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return checksumAlgorithms?.MD5 ?? config.md5;
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case ChecksumAlgorithm.CRC32:
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return checksumAlgorithms?.CRC32 ?? getCrc32ChecksumAlgorithmFunction();
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case ChecksumAlgorithm.CRC32C:
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return checksumAlgorithms?.CRC32C ?? AwsCrc32c;
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case ChecksumAlgorithm.CRC64NVME:
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if (typeof crc64NvmeCrtContainer.CrtCrc64Nvme !== "function") {
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return checksumAlgorithms?.CRC64NVME ?? Crc64Nvme;
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}
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return checksumAlgorithms?.CRC64NVME ?? crc64NvmeCrtContainer.CrtCrc64Nvme;
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case ChecksumAlgorithm.SHA1:
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return checksumAlgorithms?.SHA1 ?? config.sha1;
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case ChecksumAlgorithm.SHA256:
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return checksumAlgorithms?.SHA256 ?? config.sha256;
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default:
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if (checksumAlgorithms?.[checksumAlgorithm]) {
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return checksumAlgorithms[checksumAlgorithm];
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}
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throw new Error(`The checksum algorithm "${checksumAlgorithm}" is not supported by the client.` +
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` Select one of ${CLIENT_SUPPORTED_ALGORITHMS}, or provide an implementation to ` +
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` the client constructor checksums field.`);
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}
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};
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