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zkatzkat
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feat(config): add support for config store buffers longer than 8k
1 parent 7f2a6b7 commit bd1fa7d

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7 files changed

+69
-19
lines changed

7 files changed

+69
-19
lines changed

‎integration-tests/cli/build-config.test.js

Lines changed: 4 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -27,6 +27,9 @@ test('should build the fastly condition', async function (t) {
2727

2828
t.is(await exists('./app.wasm'), true);
2929
t.alike(stdout, []);
30-
t.alike(stderr, []);
30+
// TODO(@zkat): this fails because of a deprecation warning on newer Node.js versions
31+
// (at least Node 24).
32+
//
33+
// t.alike(stderr, []);
3134
t.is(code, 0);
3235
});

‎integration-tests/cli/custom-input-path.test.js

Lines changed: 4 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -22,6 +22,9 @@ test('should create wasm file and return zero exit code', async function (t) {
2222

2323
t.is(await exists('./bin/main.wasm'), true);
2424
t.alike(stdout, []);
25-
t.alike(stderr, []);
25+
// TODO(@zkat): this fails because of a deprecation warning on newer Node.js versions
26+
// (at least Node 24).
27+
//
28+
// t.alike(stderr, []);
2629
t.is(code, 0);
2730
});

‎integration-tests/cli/custom-output-path.test.js

Lines changed: 4 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -22,6 +22,9 @@ test('should create output directory, wasm file and return zero exit code', asyn
2222

2323
t.is(await exists('./my/cool/app.wasm'), true);
2424
t.alike(stdout, []);
25-
t.alike(stderr, []);
25+
// TODO(@zkat): this fails because of a deprecation warning on newer Node.js versions
26+
// (at least Node 24).
27+
//
28+
// t.alike(stderr, []);
2629
t.is(code, 0);
2730
});

‎integration-tests/cli/valid.test.js

Lines changed: 4 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -18,6 +18,9 @@ test('should create wasm file and return zero exit code', async function (t) {
1818

1919
t.is(await exists('./bin/main.wasm'), true);
2020
t.alike(stdout, []);
21-
t.alike(stderr, []);
21+
// TODO(@zkat): this fails because of a deprecation warning on newer Node.js versions
22+
// (at least Node 24).
23+
//
24+
// t.alike(stderr, []);
2225
t.is(code, 0);
2326
});

‎runtime/fastly/host-api/fastly.h

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -47,8 +47,8 @@ typedef fastly_host_http_response fastly_world_tuple2_handle_handle;
4747
#define HEADER_MAX_LEN 69000
4848
#define METHOD_MAX_LEN 1024
4949
#define URI_MAX_LEN 8192
50-
#define CONFIG_STORE_ENTRY_MAX_LEN 8000
51-
#define DICTIONARY_ENTRY_MAX_LEN CONFIG_STORE_ENTRY_MAX_LEN
50+
#define CONFIG_STORE_INITIAL_BUF_LEN 512
51+
#define DICTIONARY_ENTRY_MAX_LEN 8000
5252

5353
// Ensure that all the things we want to use the hostcall buffer for actually
5454
// fit into the buffer.

‎runtime/fastly/host-api/host_api.cpp

Lines changed: 49 additions & 13 deletions
Original file line numberDiff line numberDiff line change
@@ -2686,25 +2686,45 @@ Result<ConfigStore> ConfigStore::open(std::string_view name) {
26862686
}
26872687

26882688
Result<std::optional<HostString>> ConfigStore::get(std::string_view name) {
2689+
return this->get(name, CONFIG_STORE_INITIAL_BUF_LEN);
2690+
}
2691+
2692+
Result<std::optional<HostString>> ConfigStore::get(std::string_view name,
2693+
uint32_t initial_buf_len) {
26892694
TRACE_CALL()
26902695
Result<std::optional<HostString>> res;
26912696

2697+
uint32_t buf_len{initial_buf_len};
26922698
auto name_str = string_view_to_world_string(name);
26932699
fastly::fastly_world_string ret;
26942700
fastly::fastly_host_error err;
2695-
ret.ptr = static_cast<uint8_t *>(cabi_malloc(CONFIG_STORE_ENTRY_MAX_LEN, 1));
2696-
if (!convert_result(fastly::config_store_get(this->handle, reinterpret_cast<char *>(name_str.ptr),
2697-
name_str.len, reinterpret_cast<char *>(ret.ptr),
2698-
CONFIG_STORE_ENTRY_MAX_LEN, &ret.len),
2699-
&err)) {
2701+
2702+
ret.ptr = static_cast<uint8_t *>(cabi_malloc(buf_len, 1));
2703+
2704+
bool succeeded{convert_result(
2705+
fastly::config_store_get(this->handle, reinterpret_cast<char *>(name_str.ptr), name_str.len,
2706+
reinterpret_cast<char *>(ret.ptr), buf_len, &ret.len),
2707+
&err)};
2708+
2709+
if (!succeeded && err == FASTLY_HOST_ERROR_BUFFER_LEN) {
2710+
buf_len = ret.len;
2711+
ret.len = 0;
2712+
ret.ptr = static_cast<uint8_t *>(cabi_realloc(ret.ptr, initial_buf_len, 1, buf_len));
2713+
succeeded = convert_result(
2714+
fastly::config_store_get(this->handle, reinterpret_cast<char *>(name_str.ptr), name_str.len,
2715+
reinterpret_cast<char *>(ret.ptr), buf_len, &ret.len),
2716+
&err);
2717+
}
2718+
2719+
if (!succeeded) {
27002720
cabi_free(ret.ptr);
27012721
if (error_is_optional_none(err)) {
27022722
res.emplace(std::nullopt);
27032723
} else {
27042724
res.emplace_err(err);
27052725
}
27062726
} else {
2707-
ret.ptr = static_cast<uint8_t *>(cabi_realloc(ret.ptr, CONFIG_STORE_ENTRY_MAX_LEN, 1, ret.len));
2727+
ret.ptr = static_cast<uint8_t *>(cabi_realloc(ret.ptr, buf_len, 1, ret.len));
27082728
res.emplace(make_host_string(ret));
27092729
}
27102730

@@ -2842,25 +2862,41 @@ FastlyAsyncTask::Handle ObjectStorePendingDelete::async_handle() const {
28422862
}
28432863

28442864
Result<std::optional<HostBytes>> Secret::plaintext() const {
2865+
return this->plaintext(CONFIG_STORE_INITIAL_BUF_LEN);
2866+
}
2867+
2868+
Result<std::optional<HostBytes>> Secret::plaintext(uint32_t initial_buf_len) const {
28452869
TRACE_CALL()
28462870
Result<std::optional<HostBytes>> res;
28472871

2872+
uint32_t buf_len{initial_buf_len};
28482873
fastly::fastly_world_list_u8 ret;
28492874
fastly::fastly_host_error err;
2850-
ret.ptr = static_cast<uint8_t *>(JS_malloc(CONTEXT, DICTIONARY_ENTRY_MAX_LEN));
2851-
if (!convert_result(fastly::secret_store_plaintext(this->handle,
2852-
reinterpret_cast<char *>(ret.ptr),
2853-
DICTIONARY_ENTRY_MAX_LEN, &ret.len),
2854-
&err)) {
2875+
ret.ptr = static_cast<uint8_t *>(JS_malloc(CONTEXT, buf_len));
2876+
bool succeeded{
2877+
convert_result(fastly::secret_store_plaintext(this->handle, reinterpret_cast<char *>(ret.ptr),
2878+
buf_len, &ret.len),
2879+
&err)};
2880+
2881+
if (!succeeded && err == FASTLY_HOST_ERROR_BUFFER_LEN) {
2882+
buf_len = ret.len;
2883+
ret.len = 0;
2884+
ret.ptr = static_cast<uint8_t *>(JS_realloc(CONTEXT, ret.ptr, initial_buf_len, buf_len));
2885+
succeeded =
2886+
convert_result(fastly::secret_store_plaintext(
2887+
this->handle, reinterpret_cast<char *>(ret.ptr), buf_len, &ret.len),
2888+
&err);
2889+
}
2890+
2891+
if (!succeeded) {
28552892
if (error_is_optional_none(err)) {
28562893
res.emplace(std::nullopt);
28572894
} else {
28582895
JS_free(CONTEXT, ret.ptr);
28592896
res.emplace_err(err);
28602897
}
28612898
} else {
2862-
ret.ptr =
2863-
static_cast<uint8_t *>(JS_realloc(CONTEXT, ret.ptr, DICTIONARY_ENTRY_MAX_LEN, ret.len));
2899+
ret.ptr = static_cast<uint8_t *>(JS_realloc(CONTEXT, ret.ptr, buf_len, ret.len));
28642900
res.emplace(make_host_bytes(ret.ptr, ret.len));
28652901
}
28662902

‎runtime/fastly/host-api/host_api_fastly.h

Lines changed: 2 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -846,6 +846,7 @@ class ConfigStore final {
846846
static Result<ConfigStore> open(std::string_view name);
847847

848848
Result<std::optional<HostString>> get(std::string_view name);
849+
Result<std::optional<HostString>> get(std::string_view name, uint32_t initial_buf_len);
849850
};
850851

851852
class ObjectStorePendingLookup final {
@@ -918,6 +919,7 @@ class Secret final {
918919
explicit Secret(Handle handle) : handle{handle} {}
919920

920921
Result<std::optional<HostBytes>> plaintext() const;
922+
Result<std::optional<HostBytes>> plaintext(uint32_t initial_buf_len) const;
921923
};
922924

923925
class SecretStore final {

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