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funder: make policy a pointer, most places

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This commit is contained in:
niftynei
2021-05-26 18:10:32 -05:00
committed by neil saitug
parent 9e839b177c
commit d6b302b52f
4 changed files with 79 additions and 75 deletions
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78
plugins/funder_policy.c
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@@ -35,22 +35,23 @@ char *funding_option(const char *arg, enum funder_opt *opt)
}
const char *funder_policy_desc(const tal_t *ctx,
struct funder_policy policy)
const struct funder_policy *policy)
{
if (policy.opt == FIXED) {
struct amount_sat amt = amount_sat(policy.mod);
if (policy->opt == FIXED) {
struct amount_sat amt = amount_sat(policy->mod);
return tal_fmt(ctx, "%s (%s)",
funder_opt_name(policy.opt),
funder_opt_name(policy->opt),
type_to_string(ctx, struct amount_sat, &amt));
} else
return tal_fmt(ctx, "%s (%"PRIu64"%%)",
funder_opt_name(policy.opt), policy.mod);
funder_opt_name(policy->opt), policy->mod);
/* FIXME: add in more info? */
}
struct funder_policy
new_funder_policy(enum funder_opt opt,
struct funder_policy *
new_funder_policy(const tal_t *ctx,
enum funder_opt opt,
u64 policy_mod,
struct amount_sat min_their_funding,
struct amount_sat max_their_funding,
@@ -60,26 +61,27 @@ new_funder_policy(enum funder_opt opt,
struct amount_sat reserve_tank,
u32 fund_probability)
{
struct funder_policy policy;
struct funder_policy *policy = tal(ctx, struct funder_policy);
policy.opt = opt;
policy.mod = policy_mod;
policy.min_their_funding = min_their_funding;
policy.max_their_funding = max_their_funding;
policy.per_channel_min = per_channel_min;
policy.per_channel_max = per_channel_max;
policy.fuzz_factor = fuzz_factor;
policy.reserve_tank = reserve_tank;
policy.fund_probability = fund_probability;
policy->opt = opt;
policy->mod = policy_mod;
policy->min_their_funding = min_their_funding;
policy->max_their_funding = max_their_funding;
policy->per_channel_min = per_channel_min;
policy->per_channel_max = per_channel_max;
policy->fuzz_factor = fuzz_factor;
policy->reserve_tank = reserve_tank;
policy->fund_probability = fund_probability;
return policy;
}
struct funder_policy
default_funder_policy(enum funder_opt policy,
struct funder_policy *
default_funder_policy(const tal_t *ctx,
enum funder_opt policy,
u64 policy_mod)
{
return new_funder_policy(policy, policy_mod,
return new_funder_policy(ctx, policy, policy_mod,
AMOUNT_SAT(10000),
AMOUNT_SAT(UINT_MAX),
AMOUNT_SAT(10000),
@@ -137,37 +139,37 @@ apply_fuzz(u32 fuzz_factor, struct amount_sat val)
}
static struct amount_sat
apply_policy(struct funder_policy policy,
apply_policy(struct funder_policy *policy,
struct amount_sat their_funding,
struct amount_sat available_funds)
{
struct amount_sat our_funding;
switch (policy.opt) {
switch (policy->opt) {
case MATCH:
/* if this fails, it implies ludicrous funding offer, *and*
* > 100% match. Just Say No, kids. */
if (!amount_sat_scale(&our_funding, their_funding,
policy.mod / 100.0))
policy->mod / 100.0))
our_funding = AMOUNT_SAT(0);
return our_funding;
case AVAILABLE:
/* Use the 'available_funds' as the starting
* point for your contribution */
if (!amount_sat_scale(&our_funding, available_funds,
policy.mod / 100.0))
policy->mod / 100.0))
abort();
return our_funding;
case FIXED:
/* Use a static amount */
return amount_sat(policy.mod);
return amount_sat(policy->mod);
}
abort();
}
const char *
calculate_our_funding(struct funder_policy policy,
calculate_our_funding(struct funder_policy *policy,
struct node_id id,
struct amount_sat their_funding,
struct amount_sat available_funds,
@@ -177,7 +179,7 @@ calculate_our_funding(struct funder_policy policy,
struct amount_sat avail_channel_space, net_available_funds;
/* Are we skipping this one? */
if (pseudorand(100) >= policy.fund_probability) {
if (pseudorand(100) >= policy->fund_probability) {
*our_funding = AMOUNT_SAT(0);
return tal_fmt(tmpctx,
"Skipping, failed fund_probability test");
@@ -198,7 +200,7 @@ calculate_our_funding(struct funder_policy policy,
/* Figure out actual available funds, given our requested
* 'reserve_tank' */
if (!amount_sat_sub(&net_available_funds, available_funds,
policy.reserve_tank)
policy->reserve_tank)
|| amount_sat_eq(net_available_funds, AMOUNT_SAT(0))) {
*our_funding = AMOUNT_SAT(0);
return tal_fmt(tmpctx, "Reserve tank too low."
@@ -206,11 +208,11 @@ calculate_our_funding(struct funder_policy policy,
type_to_string(tmpctx, struct amount_sat,
&available_funds),
type_to_string(tmpctx, struct amount_sat,
&policy.reserve_tank));
&policy->reserve_tank));
}
/* Are they funding enough ? */
if (amount_sat_less(their_funding, policy.min_their_funding)) {
if (amount_sat_less(their_funding, policy->min_their_funding)) {
*our_funding = AMOUNT_SAT(0);
return tal_fmt(tmpctx, "Peer's funding too little."
" their_funding %s,"
@@ -218,11 +220,11 @@ calculate_our_funding(struct funder_policy policy,
type_to_string(tmpctx, struct amount_sat,
&their_funding),
type_to_string(tmpctx, struct amount_sat,
&policy.min_their_funding));
&policy->min_their_funding));
}
/* Are they funding too much ? */
if (amount_sat_greater(their_funding, policy.max_their_funding)) {
if (amount_sat_greater(their_funding, policy->max_their_funding)) {
*our_funding = AMOUNT_SAT(0);
return tal_fmt(tmpctx, "Peer's funding too much."
" their_funding %s,"
@@ -230,7 +232,7 @@ calculate_our_funding(struct funder_policy policy,
type_to_string(tmpctx, struct amount_sat,
&their_funding),
type_to_string(tmpctx, struct amount_sat,
&policy.max_their_funding));
&policy->max_their_funding));
}
/* What's our amount, given our policy */
@@ -241,7 +243,7 @@ calculate_our_funding(struct funder_policy policy,
return NULL;
/* our_funding is probably sane, so let's fuzz this amount a bit */
*our_funding = apply_fuzz(policy.fuzz_factor, *our_funding);
*our_funding = apply_fuzz(policy->fuzz_factor, *our_funding);
/* Is our_funding more than we can fit? if so set to avail space */
if (amount_sat_greater(*our_funding, avail_channel_space))
@@ -249,8 +251,8 @@ calculate_our_funding(struct funder_policy policy,
/* Is our_funding more than we want to fund in a channel?
* if so set at our desired per-channel max */
if (amount_sat_greater(*our_funding, policy.per_channel_max))
*our_funding = policy.per_channel_max;
if (amount_sat_greater(*our_funding, policy->per_channel_max))
*our_funding = policy->per_channel_max;
/* Is our_funding more than we have available? if so
* set to max available */
@@ -259,7 +261,7 @@ calculate_our_funding(struct funder_policy policy,
/* Is our_funding less than our per-channel minimum?
* if so, don't fund */
if (amount_sat_less(*our_funding, policy.per_channel_min)) {
if (amount_sat_less(*our_funding, policy->per_channel_min)) {
*our_funding = AMOUNT_SAT(0);
return tal_fmt(tmpctx, "Can't meet our min channel requirement."
" our_funding %s,"
@@ -267,7 +269,7 @@ calculate_our_funding(struct funder_policy policy,
type_to_string(tmpctx, struct amount_sat,
our_funding),
type_to_string(tmpctx, struct amount_sat,
&policy.per_channel_min));
&policy->per_channel_min));
}
return NULL;