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Azure Storage: List Blobs
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Azure Storage Blob Service REST API: Sample code to fetch the list of blobs in the specified container.Chilkat Zig Downloads
const std = @import("std");
const chilkat = @import("chilkat");
pub fn main(init: std.process.Init) !void {
const alloc = init.arena.allocator();
// 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.
const rest = try chilkat.Rest.init();
defer rest.deinit();
// Connect to the Azure Storage Blob Service
const b_tls = true;
const port = 443;
const b_auto_reconnect = true;
// In this example, the storage account name is "chilkat".
rest.connect("chilkat.blob.core.windows.net", port, b_tls, b_auto_reconnect) catch {
std.debug.print("{s}\n", .{try rest.getLastErrorText(alloc)});
return;
};
// Provide Azure Cloud credentials for the REST call.
const az_auth = try chilkat.AuthAzureStorage.init();
defer az_auth.deinit();
az_auth.setAccessKey("AZURE_ACCESS_KEY");
// The account name used here should match the 1st part of the domain passed in the call to Connect (above).
az_auth.setAccount("chilkat");
az_auth.setScheme("SharedKey");
az_auth.setService("Blob");
// This causes the "x-ms-version: 2021-08-06" header to be automatically added.
az_auth.setXMsVersion("2021-08-06");
try rest.setAuthAzureStorage(az_auth);
// 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".
const response_str = rest.fullRequestNoBody(alloc, "GET", "/mycontainer?restype=container&comp=list") catch {
std.debug.print("{s}\n", .{try rest.getLastErrorText(alloc)});
return;
};
// When successful, the Azure Storage service will respond with a 200 response status code,
// with an XML response body.
if (rest.getResponseStatusCode() != 200) {
// Examine the request/response to see what happened.
std.debug.print("response status code = {d}\n", .{rest.getResponseStatusCode()});
std.debug.print("response status text = {s}\n", .{try rest.getResponseStatusText(alloc)});
std.debug.print("response header: {s}\n", .{try rest.getResponseHeader(alloc)});
std.debug.print("response body (if any): {s}\n", .{response_str});
std.debug.print("---\n", .{});
std.debug.print("LastRequestStartLine: {s}\n", .{try rest.getLastRequestStartLine(alloc)});
std.debug.print("LastRequestHeader: {s}\n", .{try rest.getLastRequestHeader(alloc)});
return;
}
// Load the XML response for parsing.
// An example of the response XML is shown below.
const xml = try chilkat.Xml.init();
defer xml.deinit();
try xml.loadXml(response_str);
std.debug.print("{s}\n", .{try xml.getXml(alloc)});
// Let's iterate over the blobs...
const last_mod = try chilkat.DateTime.init();
defer last_mod.deinit();
const num_blobs = xml.numChildrenAt("Blobs");
var i: i32 = 0;
const dt = try chilkat.DtObj.init();
defer dt.deinit();
while (i < num_blobs) {
std.debug.print("---- Blob {d} ----\n", .{i});
xml.setI(i);
std.debug.print("Name: {s}\n", .{try xml.getChildContent(alloc, "Blobs|Blob[i]|Name")});
std.debug.print("Content-Length: {s}\n", .{try xml.getChildContent(alloc, "Blobs|Blob[i]|Properties|Content-Length")});
std.debug.print("Content-Type: {s}\n", .{try xml.getChildContent(alloc, "Blobs|Blob[i]|Properties|Content-Type")});
std.debug.print("Content-MD5: {s}\n", .{try xml.getChildContent(alloc, "Blobs|Blob[i]|Properties|Content-MD5")});
std.debug.print("BlobType: {s}\n", .{try xml.getChildContent(alloc, "Blobs|Blob[i]|Properties|BlobType")});
std.debug.print("LeaseStatus: {s}\n", .{try xml.getChildContent(alloc, "Blobs|Blob[i]|Properties|LeaseStatus")});
last_mod.setFromRfc822(try xml.getChildContent(alloc, "Blobs|Blob[i]|Properties|Last-Modified")) catch {};
last_mod.toDtObj(true, dt);
std.debug.print("Last-Modified YMD: {d},{d},{d}\n", .{ dt.getYear(), dt.getMonth(), dt.getDay() });
i = i + 1;
}
std.debug.print("-------------------------\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"
const last_mod_str = try xml.chilkatPath(alloc, "/C/Name,helloWorld.txt|..|Properties|Last-Modified|*");
std.debug.print("helloWorld.txt Last-Modified: {s}\n", .{last_mod_str});
std.debug.print("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>
//
}