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(Unicode C) Azure Storage: List BlobsAzure Storage Blob Service REST API: Sample code to fetch the list of blobs in the specified container.
#include <C_CkRestW.h> #include <C_CkAuthAzureStorageW.h> #include <C_CkXmlW.h> #include <C_CkDateTimeW.h> #include <C_CkDtObjW.h> void ChilkatSample(void) { HCkRestW rest; BOOL bTls; int port; BOOL bAutoReconnect; BOOL success; HCkAuthAzureStorageW azAuth; const wchar_t *responseStr; HCkXmlW xml; HCkDateTimeW lastMod; int numBlobs; int i; HCkDtObjW dt; const wchar_t *lastModStr; // Azure Blob Service Example: List the blobs in a specified container. // See also: https://msdn.microsoft.com/en-us/library/azure/dd135734.aspx // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. rest = CkRestW_Create(); // Connect to the Azure Storage Blob Service bTls = TRUE; port = 443; bAutoReconnect = TRUE; // In this example, the storage account name is "chilkat". success = CkRestW_Connect(rest,L"chilkat.blob.core.windows.net",port,bTls,bAutoReconnect); if (success != TRUE) { wprintf(L"%s\n",CkRestW_lastErrorText(rest)); CkRestW_Dispose(rest); return; } // Provide Azure Cloud credentials for the REST call. azAuth = CkAuthAzureStorageW_Create(); CkAuthAzureStorageW_putAccessKey(azAuth,L"AZURE_ACCESS_KEY"); // The account name used here should match the 1st part of the domain passed in the call to Connect (above). CkAuthAzureStorageW_putAccount(azAuth,L"chilkat"); CkAuthAzureStorageW_putScheme(azAuth,L"SharedKey"); CkAuthAzureStorageW_putService(azAuth,L"Blob"); // This causes the "x-ms-version: 2020-08-04" header to be automatically added. CkAuthAzureStorageW_putXMsVersion(azAuth,L"2020-08-04"); success = CkRestW_SetAuthAzureStorage(rest,azAuth); // Note: The application does not need to explicitly set the following // headers: x-ms-date, Authorization. These headers // are automatically set by Chilkat. // The expected success response is a 200 response status code with an XML response body. // In this example, we are listing the blobs in the container named "mycontainer". responseStr = CkRestW_fullRequestNoBody(rest,L"GET",L"/mycontainer?restype=container&comp=list"); if (CkRestW_getLastMethodSuccess(rest) != TRUE) { wprintf(L"%s\n",CkRestW_lastErrorText(rest)); CkRestW_Dispose(rest); CkAuthAzureStorageW_Dispose(azAuth); return; } // When successful, the Azure Storage service will respond with a 200 response status code, // with an XML response body. if (CkRestW_getResponseStatusCode(rest) != 200) { // Examine the request/response to see what happened. wprintf(L"response status code = %d\n",CkRestW_getResponseStatusCode(rest)); wprintf(L"response status text = %s\n",CkRestW_responseStatusText(rest)); wprintf(L"response header: %s\n",CkRestW_responseHeader(rest)); wprintf(L"response body (if any): %s\n",responseStr); wprintf(L"---\n"); wprintf(L"LastRequestStartLine: %s\n",CkRestW_lastRequestStartLine(rest)); wprintf(L"LastRequestHeader: %s\n",CkRestW_lastRequestHeader(rest)); CkRestW_Dispose(rest); CkAuthAzureStorageW_Dispose(azAuth); return; } // Load the XML response for parsing. // An example of the response XML is shown below. xml = CkXmlW_Create(); success = CkXmlW_LoadXml(xml,responseStr); wprintf(L"%s\n",CkXmlW_getXml(xml)); // Let's iterate over the blobs... lastMod = CkDateTimeW_Create(); numBlobs = CkXmlW_NumChildrenAt(xml,L"Blobs"); i = 0; while (i < numBlobs) { wprintf(L"---- Blob %d ----\n",i); CkXmlW_putI(xml,i); wprintf(L"Name: %s\n",CkXmlW_getChildContent(xml,L"Blobs|Blob[i]|Name")); wprintf(L"Content-Length: %s\n",CkXmlW_getChildContent(xml,L"Blobs|Blob[i]|Properties|Content-Length")); wprintf(L"Content-Type: %s\n",CkXmlW_getChildContent(xml,L"Blobs|Blob[i]|Properties|Content-Type")); wprintf(L"Content-MD5: %s\n",CkXmlW_getChildContent(xml,L"Blobs|Blob[i]|Properties|Content-MD5")); wprintf(L"BlobType: %s\n",CkXmlW_getChildContent(xml,L"Blobs|Blob[i]|Properties|BlobType")); wprintf(L"LeaseStatus: %s\n",CkXmlW_getChildContent(xml,L"Blobs|Blob[i]|Properties|LeaseStatus")); CkDateTimeW_SetFromRfc822(lastMod,CkXmlW_getChildContent(xml,L"Blobs|Blob[i]|Properties|Last-Modified")); dt = CkDateTimeW_GetDtObj(lastMod,TRUE); wprintf(L"Last-Modified YMD: %d,%d,%d\n",CkDtObjW_getYear(dt),CkDtObjW_getMonth(dt),CkDtObjW_getDay(dt)); CkDtObjW_Dispose(dt); i = i + 1; } wprintf(L"-------------------------\n"); // Use the ChilkatPath method to get information for a specific blob: // For example, let's say we want the Last-Modified date/time for // the blob named "helloWorld.txt" lastModStr = CkXmlW_chilkatPath(xml,L"/C/Name,helloWorld.txt|..|Properties|Last-Modified|*"); wprintf(L"helloWorld.txt Last-Modified: %s\n",lastModStr); wprintf(L"Success.\n"); // <?xml version="1.0" encoding="utf-8" ?> // <EnumerationResults ServiceEndpoint="https://chilkat.blob.core.windows.net/" ContainerName="test"> // <Blobs> // <Blob> // <Name>hamletC.xml</Name> // <Properties> // <Last-Modified>Mon, 02 May 2016 23:50:30 GMT</Last-Modified> // <Etag>0x8D372E48B6D323A</Etag> // <Content-Length>279658</Content-Length> // <Content-Type>application/octet-stream</Content-Type> // <Content-Encoding /> // <Content-Language /> // <Content-MD5>4E6prI9haw81xadSLeEj3Q==</Content-MD5> // <Cache-Control /> // <Content-Disposition>attachment; filename="hamletC.xml"</Content-Disposition> // <BlobType>BlockBlob</BlobType> // <LeaseStatus>unlocked</LeaseStatus> // <LeaseState>available</LeaseState> // </Properties> // </Blob> // <Blob> // <Name>helloWorld.txt</Name> // <Properties> // <Last-Modified>Mon, 02 May 2016 15:21:55 GMT</Last-Modified> // <Etag>0x8D3729D7EE38299</Etag> // <Content-Length>12</Content-Length> // <Content-Type>application/octet-stream</Content-Type> // <Content-Encoding /> // <Content-Language /> // <Content-MD5>7Qdih1MuhjZehB6Sv8UNjA==</Content-MD5> // <Cache-Control /> // <Content-Disposition>attachment; filename="helloWorld.txt"</Content-Disposition> // <BlobType>BlockBlob</BlobType> // <LeaseStatus>unlocked</LeaseStatus> // <LeaseState>available</LeaseState> // </Properties> // </Blob> // <Blob> // <Name>thisIsATest.txt</Name> // <Properties> // <Last-Modified>Tue, 03 May 2016 00:22:13 GMT</Last-Modified> // <Etag>0x8D372E8F9B2A62E</Etag> // <Content-Length>1600</Content-Length> // <Content-Type>application/octet-stream</Content-Type> // <Content-Encoding /> // <Content-Language /> // <Content-MD5>FhgUXYfePg2ItsraPmz0Xg==</Content-MD5> // <Cache-Control /> // <Content-Disposition>attachment; filename="thisIsATest.txt"</Content-Disposition> // <BlobType>BlockBlob</BlobType> // <LeaseStatus>unlocked</LeaseStatus> // <LeaseState>available</LeaseState> // </Properties> // </Blob> // </Blobs> // <NextMarker /> // </EnumerationResults> // CkRestW_Dispose(rest); CkAuthAzureStorageW_Dispose(azAuth); CkXmlW_Dispose(xml); CkDateTimeW_Dispose(lastMod); } |
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