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Added user list sub system.

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This commit is contained in:
Ravin Perera
2019-10-03 17:26:43 +05:30
parent 0fecafe52e
commit 1e855bf1b2
6 changed files with 172 additions and 52 deletions
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61
src/proc.cpp
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@@ -2,7 +2,6 @@
#include <iostream>
#include <stdlib.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <rapidjson/document.h>
@@ -12,6 +11,7 @@
#include "conf.h"
using namespace std;
using namespace shared;
namespace proc
{
@@ -21,12 +21,11 @@ namespace proc
*/
int contract_pid;
void write_to_stdin(ContractExecArgs &msg);
void write_to_stdin(ContractExecArgs &args);
bool is_contract_running();
int exec_contract(ContractExecArgs &msg);
int read_contract_outputs(vector<ContractUser> users);
int exec_contract(ContractExecArgs &args);
int exec_contract(ContractExecArgs &msg)
int exec_contract(ContractExecArgs &args)
{
if (is_contract_running())
{
@@ -45,7 +44,7 @@ int exec_contract(ContractExecArgs &msg)
chdir(conf::ctx.contractDir.data());
//Write the contract args to the stdin (0) of the contract process.
write_to_stdin(msg);
write_to_stdin(args);
char *args[] = {conf::cfg.binary.data(), conf::cfg.binargs.data(), NULL};
@@ -60,49 +59,29 @@ int exec_contract(ContractExecArgs &msg)
return 1;
}
//Read per-user outputs produced by the contract process.
int read_contract_outputs(vector<ContractUser> users)
{
if (is_contract_running())
{
cerr << "Contract process still running.\n";
return 0;
}
for (ContractUser user : users)
{
int fdout = user.outpipe[0];
int bytes_available = 0;
ioctl(fdout, FIONREAD, &bytes_available);
if (bytes_available > 0)
{
char data[bytes_available];
read(fdout, data, bytes_available);
cout << "user:" << user.pubkeyb64 << " reply: '" << data << "'" << endl;
}
}
return 1;
}
void write_to_stdin(ContractExecArgs &msg)
/**
* Passes the input in the format:
* {
* "version":"0.1",
* "usrfd":{ "pk1":[fd0, fd1], "pk2":[fd0, fd1] }
* }
*/
void write_to_stdin(ContractExecArgs &args)
{
Document d;
d.SetObject();
Document::AllocatorType &allocator = d.GetAllocator();
d.AddMember("version", StringRef(_HP_VERSION_), allocator);
Value users(kArrayType);
for (ContractUser user : msg.users)
Value users(kObjectType);
for (auto& [pk, user] : (*args.users))
{
Value v;
v.SetObject();
v.AddMember("fdin", user.inpipe[0], allocator);
v.AddMember("fdout", user.outpipe[1], allocator);
users.PushBack(v, allocator);
Value fdlist(kArrayType);
fdlist.PushBack(user.inpipe[0], allocator);
fdlist.PushBack(user.outpipe[1], allocator);
users.AddMember(StringRef(user.pubkeyb64.data()), fdlist, allocator);
}
d.AddMember("users", users, allocator);
d.AddMember("usrfd", users, allocator);
StringBuffer buffer;
Writer<StringBuffer> writer(buffer);