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(Unicode C) Download S3 CloudTrail Log and Un-GzipDemonstrates how to download a Amazon CloudTrail log from an S3 bucket. The file in this example is a .json.gz. The file is uncompressed and the JSON parsed.
#include <C_CkHttpW.h> #include <C_CkGzipW.h> #include <C_CkJsonObjectW.h> void ChilkatSample(void) { HCkHttpW http; const wchar_t *bucketName; const wchar_t *objectName; const wchar_t *localFilePath; BOOL success; int statusCode; const wchar_t *jsonPath; HCkGzipW gzip; HCkJsonObjectW json; // This requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. http = CkHttpW_Create(); CkHttpW_putAwsAccessKey(http,L"AWS_ACCESS_KEY"); CkHttpW_putAwsSecretKey(http,L"AWS_SECRET_KEY"); CkHttpW_putS3Ssl(http,TRUE); CkHttpW_putAwsRegion(http,L"us-west-2"); CkHttpW_putAwsEndpoint(http,L"s3-us-west-2.amazonaws.com"); bucketName = L"chilkat.logs"; objectName = L"/AWSLogs/957491831129/CloudTrail/us-west-1/2016/11/12/957491831129_CloudTrail_us-west-1_20161112T1335Z_umXfD4RxHE5nDGuI.json.gz"; localFilePath = L"qa_output/cloudTrailLog.json.gz"; success = CkHttpW_S3_DownloadFile(http,bucketName,objectName,localFilePath); if (success != TRUE) { wprintf(L"%s\n",CkHttpW_lastErrorText(http)); CkHttpW_Dispose(http); return; } statusCode = CkHttpW_getLastStatus(http); if (statusCode != 200) { wprintf(L"Failed to download, response status code = %d\n",statusCode); CkHttpW_Dispose(http); return; } jsonPath = L"qa_output/cloudTrailLog.json"; gzip = CkGzipW_Create(); success = CkGzipW_UncompressFile(gzip,localFilePath,jsonPath); if (success == FALSE) { wprintf(L"%s\n",CkGzipW_lastErrorText(gzip)); CkHttpW_Dispose(http); CkGzipW_Dispose(gzip); return; } json = CkJsonObjectW_Create(); CkJsonObjectW_LoadFile(json,jsonPath); CkJsonObjectW_putEmitCompact(json,FALSE); wprintf(L"%s\n",CkJsonObjectW_emit(json)); // Sample JSON is shown below. // Go to http://tools.chilkat.io/jsonParse.cshtml // and copy/paste the JSON into the online tool to generate parsing code. // { // "Records": [ // { // "eventVersion": "1.05", // "userIdentity": { // "type": "Root", // "principalId": "954591834127", // "arn": "arn:aws:iam::954591834127:root", // "accountId": "954591834127", // "accessKeyId": "ASIAJ3DEMXUXI43B6FYQ", // "sessionContext": { // "attributes": { // "mfaAuthenticated": "false", // "creationDate": "2016-11-12T13:09:31Z" // } // } // }, // "eventTime": "2016-11-12T13:34:39Z", // "eventSource": "cloudtrail.amazonaws.com", // "eventName": "DescribeTrails", // "awsRegion": "us-west-1", // "sourceIPAddress": "98.228.98.57", // "userAgent": "console.amazonaws.com", // "requestParameters": { // "trailNameList": [ // ] // }, // "responseElements": null, // "requestID": "c2a0376c-a8dc-11e6-89e7-85ac5ce5ee56", // "eventID": "eb5afd70-dae1-41f0-82b4-91c3c936d9ba", // "eventType": "AwsApiCall", // "recipientAccountId": "954591834127" // } // ] // } CkHttpW_Dispose(http); CkGzipW_Dispose(gzip); CkJsonObjectW_Dispose(json); } |
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