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kernel: Add chain params context option to C header

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As a first option, add the chainparams. For now these can only be
instantiated with default values. In future they may be expanded to take
their own options for regtest and signet configurations.

This commit also introduces a unique pattern for setting the option
values when calling the `*_set(...)` function.
This commit is contained in:
TheCharlatan
2024-06-03 14:44:55 +02:00
parent 337ea860df
commit 9e1bac4585
4 changed files with 145 additions and 3 deletions
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62
src/kernel/bitcoinkernel.cpp
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@@ -18,6 +18,7 @@
#include <script/script.h>
#include <serialize.h>
#include <streams.h>
#include <sync.h>
#include <tinyformat.h>
#include <util/result.h>
#include <util/signalinterrupt.h>
@@ -108,6 +109,11 @@ struct Handle {
return *reinterpret_cast<const CPP*>(ptr);
}
static CPP& get(C* ptr)
{
return *reinterpret_cast<CPP*>(ptr);
}
static void operator delete(void* ptr)
{
delete reinterpret_cast<CPP*>(ptr);
@@ -219,6 +225,8 @@ struct LoggingConnection {
};
struct ContextOptions {
mutable Mutex m_mutex;
std::unique_ptr<const CChainParams> m_chainparams GUARDED_BY(m_mutex);
};
class Context
@@ -235,9 +243,19 @@ public:
Context(const ContextOptions* options, bool& sane)
: m_context{std::make_unique<kernel::Context>()},
m_notifications{std::make_unique<kernel::Notifications>()},
m_interrupt{std::make_unique<util::SignalInterrupt>()},
m_chainparams{CChainParams::Main()}
m_interrupt{std::make_unique<util::SignalInterrupt>()}
{
if (options) {
LOCK(options->m_mutex);
if (options->m_chainparams) {
m_chainparams = std::make_unique<const CChainParams>(*options->m_chainparams);
}
}
if (!m_chainparams) {
m_chainparams = CChainParams::Main();
}
if (!kernel::SanityChecks(*m_context)) {
sane = false;
}
@@ -252,6 +270,7 @@ struct btck_ScriptPubkey : Handle<btck_ScriptPubkey, CScript> {};
struct btck_LoggingConnection : Handle<btck_LoggingConnection, LoggingConnection> {};
struct btck_ContextOptions : Handle<btck_ContextOptions, ContextOptions> {};
struct btck_Context : Handle<btck_Context, std::shared_ptr<const Context>> {};
struct btck_ChainParameters : Handle<btck_ChainParameters, CChainParams> {};
btck_Transaction* btck_transaction_create(const void* raw_transaction, size_t raw_transaction_len)
{
@@ -448,11 +467,50 @@ void btck_logging_connection_destroy(btck_LoggingConnection* connection)
delete connection;
}
btck_ChainParameters* btck_chain_parameters_create(const btck_ChainType chain_type)
{
switch (chain_type) {
case btck_ChainType_MAINNET: {
return btck_ChainParameters::ref(const_cast<CChainParams*>(CChainParams::Main().release()));
}
case btck_ChainType_TESTNET: {
return btck_ChainParameters::ref(const_cast<CChainParams*>(CChainParams::TestNet().release()));
}
case btck_ChainType_TESTNET_4: {
return btck_ChainParameters::ref(const_cast<CChainParams*>(CChainParams::TestNet4().release()));
}
case btck_ChainType_SIGNET: {
return btck_ChainParameters::ref(const_cast<CChainParams*>(CChainParams::SigNet({}).release()));
}
case btck_ChainType_REGTEST: {
return btck_ChainParameters::ref(const_cast<CChainParams*>(CChainParams::RegTest({}).release()));
}
}
assert(false);
}
btck_ChainParameters* btck_chain_parameters_copy(const btck_ChainParameters* chain_parameters)
{
return btck_ChainParameters::copy(chain_parameters);
}
void btck_chain_parameters_destroy(btck_ChainParameters* chain_parameters)
{
delete chain_parameters;
}
btck_ContextOptions* btck_context_options_create()
{
return btck_ContextOptions::create();
}
void btck_context_options_set_chainparams(btck_ContextOptions* options, const btck_ChainParameters* chain_parameters)
{
// Copy the chainparams, so the caller can free it again
LOCK(btck_ContextOptions::get(options).m_mutex);
btck_ContextOptions::get(options).m_chainparams = std::make_unique<const CChainParams>(btck_ChainParameters::get(chain_parameters));
}
void btck_context_options_destroy(btck_ContextOptions* options)
{
delete options;