port ffe feature flagging sdk to php

Makefile

@@ -48,7 +48,7 @@ RUN_TESTS_CMD := DD_SERVICE= DD_ENV= REPORT_EXIT_STATUS=1 TEST_PHP_SRCDIR=$(PROJ
 
 C_FILES = $(shell find components components-rs ext src/dogstatsd zend_abstract_interface -name '*.c' -o -name '*.h' | awk '{ printf "$(BUILD_DIR)/%s\n", $$1 }' )
 TEST_FILES = $(shell find tests/ext -name '*.php*' -o -name '*.inc' -o -name '*.json' -o -name '*.yaml' -o -name 'CONFLICTS' | awk '{ printf "$(BUILD_DIR)/%s\n", $$1 }' )
-RUST_FILES = $(BUILD_DIR)/Cargo.toml $(BUILD_DIR)/Cargo.lock $(shell find components-rs -name '*.c' -o -name '*.rs' -o -name 'Cargo.toml' | awk '{ printf "$(BUILD_DIR)/%s\n", $$1 }' ) $(shell find libdatadog/{build-common,datadog-ipc,datadog-ipc-macros,datadog-live-debugger,datadog-live-debugger-ffi,datadog-remote-config,datadog-sidecar,datadog-sidecar-ffi,datadog-sidecar-macros,libdd-alloc,libdd-common,libdd-common-ffi,libdd-crashtracker,libdd-crashtracker-ffi,libdd-data-pipeline,libdd-ddsketch,libdd-dogstatsd-client,libdd-library-config,libdd-library-config-ffi,libdd-log,libdd-telemetry,libdd-telemetry-ffi,libdd-tinybytes,libdd-trace-*,spawn_worker,tools/{cc_utils,sidecar_mockgen},libdd-trace-*,Cargo.toml} \( -type l -o -type f \) \( -path "*/src*" -o -path "*/examples*" -o -path "*Cargo.toml" -o -path "*/build.rs" -o -path "*/tests/dataservice.rs" -o -path "*/tests/service_functional.rs" \) -not -path "*/datadog-ipc/build.rs" -not -path "*/datadog-sidecar-ffi/build.rs")
+RUST_FILES = $(BUILD_DIR)/Cargo.toml $(BUILD_DIR)/Cargo.lock $(shell find components-rs -name '*.c' -o -name '*.rs' -o -name 'Cargo.toml' | awk '{ printf "$(BUILD_DIR)/%s\n", $$1 }' ) $(shell find libdatadog/{build-common,datadog-ffe,datadog-ipc,datadog-ipc-macros,datadog-live-debugger,datadog-live-debugger-ffi,datadog-remote-config,datadog-sidecar,datadog-sidecar-ffi,datadog-sidecar-macros,libdd-alloc,libdd-common,libdd-common-ffi,libdd-crashtracker,libdd-crashtracker-ffi,libdd-data-pipeline,libdd-ddsketch,libdd-dogstatsd-client,libdd-library-config,libdd-library-config-ffi,libdd-log,libdd-telemetry,libdd-telemetry-ffi,libdd-tinybytes,libdd-trace-*,spawn_worker,tools/{cc_utils,sidecar_mockgen},libdd-trace-*,Cargo.toml} \( -type l -o -type f \) \( -path "*/src*" -o -path "*/examples*" -o -path "*Cargo.toml" -o -path "*/build.rs" -o -path "*/tests/dataservice.rs" -o -path "*/tests/service_functional.rs" \) -not -path "*/datadog-ipc/build.rs" -not -path "*/datadog-sidecar-ffi/build.rs")
 ALL_OBJECT_FILES = $(C_FILES) $(RUST_FILES) $(BUILD_DIR)/Makefile
 TEST_OPCACHE_FILES = $(shell find tests/opcache -name '*.php*' -o -name '.gitkeep' | awk '{ printf "$(BUILD_DIR)/%s\n", $$1 }' )
 TEST_STUB_FILES = $(shell find tests/ext -type d -name 'stubs' -exec find '{}' -type f \; | awk '{ printf "$(BUILD_DIR)/%s\n", $$1 }' )

components-rs/Cargo.toml

@@ -15,14 +15,15 @@ libdd-telemetry-ffi = { path = "../libdatadog/libdd-telemetry-ffi", default-feat
 datadog-live-debugger = { path = "../libdatadog/datadog-live-debugger" }
 datadog-live-debugger-ffi = { path = "../libdatadog/datadog-live-debugger-ffi", default-features = false }
 datadog-ipc = { path = "../libdatadog/datadog-ipc" }
-datadog-remote-config = { path = "../libdatadog/datadog-remote-config" }
+datadog-remote-config = { path = "../libdatadog/datadog-remote-config", features = ["ffe"] }
 datadog-sidecar = { path = "../libdatadog/datadog-sidecar" }
 datadog-sidecar-ffi = { path = "../libdatadog/datadog-sidecar-ffi" }
 libdd-tinybytes = { path = "../libdatadog/libdd-tinybytes" }
 libdd-trace-utils = { path = "../libdatadog/libdd-trace-utils" }
 libdd-crashtracker-ffi = { path = "../libdatadog/libdd-crashtracker-ffi", default-features = false, features = ["collector"] }
 libdd-library-config-ffi = { path = "../libdatadog/libdd-library-config-ffi", default-features = false }
 spawn_worker = { path = "../libdatadog/spawn_worker" }
+datadog-ffe = { path = "../libdatadog/datadog-ffe" }
 anyhow = { version = "1.0" }
 const-str = "0.5.6"
 itertools = "0.11.0"

components-rs/ddtrace.h

@@ -61,14 +61,46 @@ uint32_t ddog_get_logs_count(ddog_CharSlice level);
 
 void ddog_init_remote_config(bool live_debugging_enabled,
                              bool appsec_activation,
-                             bool appsec_config);
+                             bool appsec_config,
+                             bool ffe_enabled);
 
 struct ddog_RemoteConfigState *ddog_init_remote_config_state(const struct ddog_Endpoint *endpoint);
 
 const char *ddog_remote_config_get_path(const struct ddog_RemoteConfigState *remote_config);
 
 bool ddog_process_remote_configs(struct ddog_RemoteConfigState *remote_config);
 
+bool ddog_ffe_load_config(const char *json);
+
+bool ddog_ffe_has_config(void);
+
+bool ddog_ffe_config_changed(void);
+
+struct FfeResult;
+
+struct FfeAttribute {
+    const char *key;
+    int32_t value_type;       /* 0=string, 1=number, 2=bool */
+    const char *string_value;
+    double number_value;
+    bool bool_value;
+};
+
+struct FfeResult *ddog_ffe_evaluate(
+    const char *flag_key,
+    int32_t expected_type,
+    const char *targeting_key,
+    const struct FfeAttribute *attributes,
+    size_t attributes_count);
+
+const char *ddog_ffe_result_value(const struct FfeResult *r);
+const char *ddog_ffe_result_variant(const struct FfeResult *r);
+const char *ddog_ffe_result_allocation_key(const struct FfeResult *r);
+int32_t ddog_ffe_result_reason(const struct FfeResult *r);
+int32_t ddog_ffe_result_error_code(const struct FfeResult *r);
+bool ddog_ffe_result_do_log(const struct FfeResult *r);
+void ddog_ffe_free_result(struct FfeResult *r);
+
 bool ddog_type_can_be_instrumented(const struct ddog_RemoteConfigState *remote_config,
                                    ddog_CharSlice typename_);