ekump/APMSP-1756 add trace exporter integration tests (#897)

- APMSP-1756 add initial integration tests for trace exporter
- APMSP-1779 add span deserialization and Payload collection construction to send data integration tests
- Return the offending key in the error message when decoding v04 msgpack spans and we encounter an invalid key
- Fix confusing var name in dogstatsd client from PR #890

LICENSE-3rdparty.yml

@@ -32481,6 +32481,33 @@ third_party_libraries:
       DEALINGS IN THE SOFTWARE.
   - license: Apache-2.0
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+- package_name: urlencoding
+  package_version: 2.1.3
+  repository: https://github.com/kornelski/rust_urlencoding
+  license: MIT
+  licenses:
+  - license: MIT
+    text: |
+      © 2016 Bertram Truong
+      © 2021 Kornel Lesiński
+
+      Permission is hereby granted, free of charge, to any person obtaining a copy
+      of this software and associated documentation files (the "Software"), to deal
+      in the Software without restriction, including without limitation the rights
+      to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+      copies of the Software, and to permit persons to whom the Software is
+      furnished to do so, subject to the following conditions:
+
+      The above copyright notice and this permission notice shall be included in
+      all copies or substantial portions of the Software.
+
+      THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+      IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+      FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+      AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+      LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+      OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+      THE SOFTWARE.
 - package_name: ustr
   package_version: 1.1.0
   repository: https://github.com/anderslanglands/ustr

data-pipeline/Cargo.toml

@@ -41,8 +41,13 @@ path = "benches/main.rs"
 
 [dev-dependencies]
 criterion = "0.5.1"
+data-pipeline = { path = ".", features = ["test-utils"] }
 datadog-trace-utils = { path = "../trace-utils", features = ["test-utils"] }
 httpmock = "0.7.0"
 rand = "0.8.5"
 regex = "1.5"
+tempfile = "3.3.0"
 tokio = {version = "1.23", features = ["rt", "time", "test-util"], default-features = false}
+
+[features]
+test-utils = []

data-pipeline/src/trace_exporter/mod.rs

@@ -84,6 +84,16 @@ impl TraceExporterOutputFormat {
             },
         )
     }
+
+    #[cfg(feature = "test-utils")]
+    // This function is only intended for testing purposes so we don't need to go to all the trouble
+    // of breaking the uri down and parsing it as rigorously as we would if we were using it in
+    // production code.
+    fn add_query(&self, url: &Uri, query: &str) -> Uri {
+        let url = format!("{}?{}", url, query);
+
+        Uri::from_str(&url).expect("Failed to create Uri from string")
+    }
 }
 
 /// Add a path to the URL.
@@ -96,11 +106,10 @@ fn add_path(url: &Uri, path: &str) -> Uri {
     let p_and_q = url.path_and_query();
     let new_p_and_q = match p_and_q {
         Some(pq) => {
-            let mut p = pq.path().to_string();
-            if p.ends_with('/') {
-                p.pop();
-            }
+            let p = pq.path();
+            let mut p = p.strip_suffix('/').unwrap_or(p).to_owned();
             p.push_str(path);
+
             PathAndQuery::from_str(p.as_str())
         }
         None => PathAndQuery::from_str(path),
@@ -253,6 +262,8 @@ pub struct TraceExporter {
     agent_info: AgentInfoArc,
     previous_info_state: ArcSwapOption<String>,
     telemetry: Option<TelemetryClient>,
+    #[cfg(feature = "test-utils")]
+    query_params: Option<String>,
 }
 
 impl TraceExporter {
@@ -640,7 +651,7 @@ impl TraceExporter {
                 let chunks = traces.len();
                 let payload_len = payload.len();
                 let endpoint = Endpoint {
-                    url: self.output_format.add_path(&self.endpoint.url),
+                    url: self.get_agent_url(),
                     ..self.endpoint.clone()
                 };
                 let mut headers: HashMap<&str, String> = header_tags.into();
@@ -742,6 +753,18 @@ impl TraceExporter {
             TraceExporterOutputFormat::V07 => todo!("We don't support translating to v07 yet"),
         }
     }
+
+    fn get_agent_url(&self) -> Uri {
+        #[cfg(feature = "test-utils")]
+        {
+            if let Some(query) = &self.query_params {
+                let url = self.output_format.add_path(&self.endpoint.url);
+                return self.output_format.add_query(&url, query);
+            }
+        }
+
+        self.output_format.add_path(&self.endpoint.url)
+    }
 }
 
 const DEFAULT_AGENT_URL: &str = "http://127.0.0.1:8126";
@@ -771,7 +794,9 @@ pub struct TraceExporterBuilder {
     dogstatsd_url: Option<String>,
     client_computed_stats: bool,
     client_computed_top_level: bool,
-
+    #[cfg(feature = "test-utils")]
+    /// not supported in production, but useful for interacting with the test-agent
+    query_params: Option<String>,
     // Stats specific fields
     /// A Some value enables stats-computation, None if it is disabled
     stats_bucket_size: Option<Duration>,
@@ -926,6 +951,14 @@ impl TraceExporterBuilder {
         self
     }
 
+    #[cfg(feature = "test-utils")]
+    /// Set query parameters to be used in the URL when communicating with the test-agent. This is
+    /// not supported in production as the real agent doesn't accept query params.
+    pub fn set_query_params(mut self, query_params: &str) -> Self {
+        self.query_params = Some(query_params.to_owned());
+        self
+    }
+
     #[allow(missing_docs)]
     pub fn build(self) -> Result<TraceExporter, TraceExporterError> {
         let runtime = tokio::runtime::Builder::new_current_thread()
@@ -1014,6 +1047,8 @@ impl TraceExporterBuilder {
             agent_info,
             previous_info_state: ArcSwapOption::new(None),
             telemetry,
+            #[cfg(feature = "test-utils")]
+            query_params: self.query_params,
         })
     }
 }

data-pipeline/tests/snapshots/compare_v04_trace_snapshot_test.json

@@ -0,0 +1,60 @@
+[
+  [
+    {
+      "service": "test-service",
+      "name": "test_name",
+      "resource": "test-resource",
+      "trace_id": 1234,
+      "span_id": 12342,
+      "parent_id": 12341,
+      "start": 1,
+      "duration": 5,
+      "meta": {
+        "env": "test-env",
+        "service": "test-service",
+        "runtime-id": "test-runtime-id-value"
+      },
+      "metrics": {
+        "_dd_metric1": 1.0,
+        "_dd_metric2": 2.0
+      }
+    },
+    {
+      "service": "test-service",
+      "name": "test_name",
+      "resource": "test-resource",
+      "trace_id": 1234,
+      "span_id": 12343,
+      "parent_id": 12341,
+      "start": 1,
+      "duration": 5,
+      "meta": {
+        "env": "test-env",
+        "runtime-id": "test-runtime-id-value",
+        "service": "test-service"
+      }
+    },
+    {
+      "service": "test-service",
+      "name": "test_name",
+      "resource": "test-resource",
+      "trace_id": 1234,
+      "span_id": 12341,
+      "parent_id": 0,
+      "start": 0,
+      "duration": 5,
+      "meta": {
+        "_dd.origin": "cloudfunction",
+        "env": "test-env",
+        "service": "test-service",
+        "runtime-id": "test-runtime-id-value",
+        "origin": "cloudfunction",
+        "functionname": "dummy_function_name"
+      },
+      "metrics": {
+        "_top_level": 1.0
+      },
+      "type": "web"
+    }
+  ]
+]