feat: allow setting of pact specification version to output on mock server creation

Author: YOU54F

pact_mock_server_cli/README.md

@@ -120,16 +120,17 @@ Creates a new mock server from a pact file
 Usage: pact_mock_server_cli create [OPTIONS] --file <file>
 
 Options:
-  -f, --file <file>          the pact file to define the mock server
-      --help                 Print help and exit
-  -c, --cors-preflight       Handle CORS pre-flight requests
-  -v, --version              Print version information and exit
-  -p, --port <port>          port the master mock server runs on (defaults to 8080)
-      --tls                  Enable TLS with the mock server (will use a self-signed certificate)
-  -h, --host <host>          hostname the master mock server runs on (defaults to localhost)
-  -l, --loglevel <loglevel>  Log level for mock servers to write to the log file (defaults to info) [possible values: error, warn, info, debug, trace, none]
-      --no-term-log          Turns off using terminal ANSI escape codes
-      --no-file-log          Do not log to an output file
+  -f, --file <file>                    the pact file to define the mock server
+      --help                           Print help and exit
+  -c, --cors-preflight                 Handle CORS pre-flight requests
+  -v, --version                        Print version information and exit
+  -p, --port <port>                    port the master mock server runs on (defaults to 8080)
+      --specification <specification>  The Pact specification version to use (defaults to V4)
+  -h, --host <host>                    hostname the master mock server runs on (defaults to localhost)
+      --tls                            Enable TLS with the mock server (will use a self-signed certificate)
+  -l, --loglevel <loglevel>            Log level for mock servers to write to the log file (defaults to info) [possible values: error, warn, info, debug, trace, none]
+      --no-term-log                    Turns off using terminal ANSI escape codes
+      --no-file-log                    Do not log to an output file
 
 
 ```

pact_mock_server_cli/src/create_mock.rs

@@ -15,14 +15,19 @@ pub async fn create_mock_server(host: &str, port: u16, matches: &ArgMatches, usa
 
   match RequestResponsePact::read_pact(Path::new(file)) {
     Ok(ref pact) => {
-      let mut args = vec![];
+      let mut args = Vec::<String>::new();
       if matches.get_flag("cors") {
         info!("Setting mock server to handle CORS pre-flight requests");
-        args.push("cors=true");
+        args.push("cors=true".to_string());
+      }
+      if let Some(specification) = matches.get_one::<String>("specification") {
+        info!("Setting mock server to use pact specification {}", specification);
+        let spec_arg = format!("specification={}", specification);
+        args.push(spec_arg);
       }
       if matches.get_flag("tls") {
         info!("Setting mock server to use TLS");
-        args.push("tls=true");
+        args.push("tls=true".to_string());
       }
       let url = if args.is_empty() {
         format!("http://{}:{}/", host, port)

pact_mock_server_cli/src/lib.rs

@@ -208,7 +208,12 @@ pub fn setup_args() -> Command {
       .short('c')
       .long("cors-preflight")
       .action(ArgAction::SetTrue)
-      .help("Handle CORS pre-flight requests"));
+      .help("Handle CORS pre-flight requests"))
+    .arg(Arg::new("specification")
+      .long("specification")
+      .action(ArgAction::Set)
+      .num_args(1)
+      .help("The Pact specification version to use (defaults to V4)"));
 
   #[cfg(feature = "tls")]
   {

pact_mock_server_cli/src/server.rs

@@ -93,10 +93,23 @@ fn start_provider(context: &mut WebmachineContext) -> Result<bool, u16> {
             })?;
           debug!("Loaded pact = {:?}", pact);
           let mock_server_id = generate_hexadecimal(8);
-          let config = MockServerConfig {
+          let pact_specification = match context.request.query.get("specification") {
+            Some(specs) => {
+              match specs.first() {
+                Some(spec) if !spec.is_empty() => Some(spec.clone()),
+                _ => None,
+              }
+            },
+            None => None
+          };
+
+          let mut config = MockServerConfig {
             cors_preflight: query_param_set(context, "cors"),
             .. MockServerConfig::default()
-          };
+            };
+          if let Some(spec) = pact_specification {
+            config.pact_specification = spec.into();
+          }
           debug!("Mock server config = {:?}", config);
 
           #[allow(unused_assignments)]

pact_mock_server_cli/tests/cmd/create.stdout

@@ -3,14 +3,15 @@ Creates a new mock server from a pact file
 Usage: pact_mock_server_cli create [OPTIONS] --file <file>
 
 Options:
-  -f, --file <file>          the pact file to define the mock server
-      --help                 Print help and exit
-  -c, --cors-preflight       Handle CORS pre-flight requests
-  -v, --version              Print version information and exit
-  -p, --port <port>          port the master mock server runs on (defaults to 8080)
-      --tls                  Enable TLS with the mock server (will use a self-signed certificate)
-  -h, --host <host>          hostname the master mock server runs on (defaults to localhost)
-  -l, --loglevel <loglevel>  Log level for mock servers to write to the log file (defaults to info) [possible values: error, warn, info, debug, trace, none]
-      --no-term-log          Turns off using terminal ANSI escape codes
-      --no-file-log          Do not log to an output file
+  -f, --file <file>                    the pact file to define the mock server
+      --help                           Print help and exit
+  -c, --cors-preflight                 Handle CORS pre-flight requests
+  -v, --version                        Print version information and exit
+  -p, --port <port>                    port the master mock server runs on (defaults to 8080)
+      --specification <specification>  The Pact specification version to use (defaults to V4)
+  -h, --host <host>                    hostname the master mock server runs on (defaults to localhost)
+      --tls                            Enable TLS with the mock server (will use a self-signed certificate)
+  -l, --loglevel <loglevel>            Log level for mock servers to write to the log file (defaults to info) [possible values: error, warn, info, debug, trace, none]
+      --no-term-log                    Turns off using terminal ANSI escape codes
+      --no-file-log                    Do not log to an output file