Hello
I'm trying to write my first class. I want to use it as module
and build anothers on top of it. I read that default functions
attributes are not inherited. Is it that same for constructor?
This is how my class (not finished) is looking right now:
class credential
{
auto accessKey = environment.get["AWS_ACCESS_KEY"];
auto secretKey = environment.get["AWS_SECRET_KEY"];
}
class sigv4 : credential
{
public:
string method;
string service;
string host;
string region;
string endpoint;
string request_parameters;
string payload;
private:
const algorithm = "AWS4-HMAC-SHA256";
auto currentClock = Clock.currTime(UTC());
auto currentDate = cast(Date)currentClock;
auto curDateStr = currentDate.toISOString;
auto currentTime = cast(TimeOfDay)currentClock;
auto curTimeStr = currentTime.toISOString;
auto xamztime = curDateStr ~ "T" ~ curTimeStr ~ "Z";
auto hmac_sha256(ubyte[] key, ubyte[] msg)
{
auto hmac = hmac!SHA256(key);
hmac.put(msg);
auto digest = hmac.finish;
return digest;
}
auto getSignatureKey(string key, string dateStamp, string
regionName, string serviceName)
{
ubyte[] kString = cast(ubyte[])("AWS4" ~ key);
auto kDate = sign(kString, cast(ubyte[])dateStamp);
auto kRegion = sign(kDate, cast(ubyte[])regionName);
auto kService = sign(kRegion,
cast(ubyte[])serviceName);
auto kSigning = sign(kService,
cast(ubyte[])"aws4_request");
return kSigning;
}
auto getCanonicalRequest(string canonicalURI, string
canonicalQueryString, string canonicalHeaderString, string
signedHeaders)
{
string payloadHash = sha256Of("").toHexString.toLower;
string canonicalRequest = method ~ "\n" ~ canonicalURI ~ "\n"
~ canonicalQueryString ~ "\n" ~ canonicalHeadersString ~ "\n" ~
signedHeaders ~ "\n" ~ payloadHash;
}
this()
{
}
}
I need to set all variables by defaults values from "public" and
all needed by function "getCanonicalRequest". But if i will use
that class to build another should i set defaults again? If yes
is there some solution for it?
//holo
