commit 194957daa20d7d60f8458a9f9c04ce7ae3a98ee6 Author: Levi Neely Date: Fri Apr 10 01:25:59 2026 +0200 Initial commit: olliesrv 9P server for ollie agent sessions Co-Authored-By: Claude Sonnet 4.6 diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..f288702 --- /dev/null +++ b/LICENSE @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. By contrast, +the GNU General Public License is intended to guarantee your freedom to +share and change all versions of a program--to make sure it remains free +software for all its users. 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If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/README.md b/README.md new file mode 100644 index 0000000..3c88203 --- /dev/null +++ b/README.md @@ -0,0 +1,122 @@ +# olliesrv + +A 9P server that exposes [ollie](../ollie) agent sessions as a virtual filesystem. Mount it with `9pfuse` and interact with AI sessions using ordinary shell tools. + +## Filesystem layout + +``` +ollie/ + ctl write: "new [backend] [agent]" | "kill " + / + prompt write: submit a prompt to the agent + chat read: cumulative conversation history + state read: current agent state (idle, thinking, calling: ) + ctl write: stop | interrupt | / + backend r/w: active backend name + agent r/w: active agent name +``` + +## Building + +```sh +mk +``` + +Installs `olliesrv` to `$HOME/bin`. + +## Usage + +```sh +olliesrv start # start daemon (backgrounds itself) +olliesrv fgstart # start in foreground +olliesrv stop # stop daemon +olliesrv status # check if running +``` + +The server listens on a Unix socket in the Plan 9 namespace (`$NAMESPACE/ollie`) and optionally mounts via `9pfuse` to `$HOME/mnt/ollie` (or `$OLLIE_9MOUNT`). + +## Sessions + +### Create a session + +```sh +echo new > ~/mnt/ollie/ctl # default backend and agent +echo "new ollama" > ~/mnt/ollie/ctl # specific backend +echo "new ollama myagent" > ~/mnt/ollie/ctl # specific backend and agent +``` + +A new session directory appears under the mount point named by timestamp + random suffix (e.g. `20260410-014002-ba70fc`). + +### Send a prompt + +```sh +echo "what files are in the current directory?" > ~/mnt/ollie//prompt +``` + +Writes dispatch asynchronously on close, so the shell returns immediately. The agent runs in the background. + +### Read the conversation + +```sh +cat ~/mnt/ollie//chat # full history snapshot +tail -f ~/mnt/ollie//chat # follow output as it arrives +``` + +The `chat` file is an append-only log of the full conversation. Format: + +``` +user: +assistant: +-> () += +``` + +### Check agent state + +```sh +cat ~/mnt/ollie//state +# idle | thinking | calling: +``` + +### Control a session + +```sh +echo stop > ~/mnt/ollie//ctl # interrupt the current turn +echo /compact > ~/mnt/ollie//ctl # summarize context +echo /clear > ~/mnt/ollie//ctl # clear session history +echo /model qwen3:8b > ~/mnt/ollie//ctl +``` + +`ctl` accepts `stop`/`interrupt` or any `/slash-command` supported by the agent. Arbitrary text is rejected. + +### Switch backend or agent + +```sh +echo ollama > ~/mnt/ollie//backend +echo myagent > ~/mnt/ollie//agent +``` + +### Kill a session + +```sh +echo "kill " > ~/mnt/ollie/ctl +``` + +## Example shell session + +```sh +$ echo new > ~/mnt/ollie/ctl +$ ls ~/mnt/ollie/ +20260410-014002-ba70fc ctl +$ sid=20260410-014002-ba70fc +$ tail -f ~/mnt/ollie/$sid/chat & +$ echo "list the go files in /home/lkn/src/ollie" > ~/mnt/ollie/$sid/prompt +user: list the go files in /home/lkn/src/ollie +assistant: -> execute_code({"code":"find /home/lkn/src/ollie -name '*.go'","language":"bash"}) += pkg/agent/core.go +pkg/agent/loop.go +... +assistant: The Go source files are: core.go, loop.go, ... +$ cat ~/mnt/ollie/$sid/state +idle +``` diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..d10e7db --- /dev/null +++ b/go.mod @@ -0,0 +1,12 @@ +module olliesrv + +go 1.25.6 + +require ( + 9fans.net/go v0.0.7 + ollie v0.0.0-00010101000000-000000000000 +) + +require gopkg.in/yaml.v3 v3.0.1 // indirect + +replace ollie => ../ollie diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..1137047 --- /dev/null +++ b/go.sum @@ -0,0 +1,38 @@ +9fans.net/go v0.0.7 h1:H5CsYJTf99C8EYAQr+uSoEJnLP/iZU8RmDuhyk30iSM= +9fans.net/go v0.0.7/go.mod h1:Rxvbbc1e+1TyGMjAvLthGTyO97t+6JMQ6ly+Lcs9Uf0= +dmitri.shuralyov.com/gpu/mtl v0.0.0-20201218220906-28db891af037/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU= +github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo= +github.com/go-gl/glfw/v3.3/glfw v0.0.0-20200222043503-6f7a984d4dc4/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8= +golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w= +golang.org/x/crypto v0.0.0-20190510104115-cbcb75029529/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI= +golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI= +golang.org/x/exp v0.0.0-20190731235908-ec7cb31e5a56/go.mod h1:JhuoJpWY28nO4Vef9tZUw9qufEGTyX1+7lmHxV5q5G4= +golang.org/x/exp v0.0.0-20210405174845-4513512abef3/go.mod h1:I6l2HNBLBZEcrOoCpyKLdY2lHoRZ8lI4x60KMCQDft4= +golang.org/x/image v0.0.0-20190227222117-0694c2d4d067/go.mod h1:kZ7UVZpmo3dzQBMxlp+ypCbDeSB+sBbTgSJuh5dn5js= +golang.org/x/image v0.0.0-20190802002840-cff245a6509b/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0= +golang.org/x/mobile v0.0.0-20190312151609-d3739f865fa6/go.mod h1:z+o9i4GpDbdi3rU15maQ/Ox0txvL9dWGYEHz965HBQE= +golang.org/x/mobile v0.0.0-20201217150744-e6ae53a27f4f/go.mod h1:skQtrUTUwhdJvXM/2KKJzY8pDgNr9I/FOMqDVRPBUS4= +golang.org/x/mobile v0.0.0-20210220033013-bdb1ca9a1e08/go.mod h1:skQtrUTUwhdJvXM/2KKJzY8pDgNr9I/FOMqDVRPBUS4= +golang.org/x/mod v0.1.0/go.mod h1:0QHyrYULN0/3qlju5TqG8bIK38QM8yzMo5ekMj3DlcY= +golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg= +golang.org/x/mod v0.1.1-0.20191209134235-331c550502dd/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA= +golang.org/x/mod v0.3.1-0.20200828183125-ce943fd02449/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA= +golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg= +golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg= +golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s= +golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= +golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= +golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= +golang.org/x/sys v0.0.0-20191001151750-bb3f8db39f24/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= +golang.org/x/sys v0.0.0-20210415045647-66c3f260301c/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= +golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ= +golang.org/x/tools v0.0.0-20190312151545-0bb0c0a6e846/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs= +golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo= +golang.org/x/tools v0.0.0-20200117012304-6edc0a871e69/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28= +golang.org/x/tools v0.0.0-20200207183749-b753a1ba74fa/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28= +golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0= +golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0= +gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM= +gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= +gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA= +gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= diff --git a/internal/p9/server.go b/internal/p9/server.go new file mode 100644 index 0000000..91eb409 --- /dev/null +++ b/internal/p9/server.go @@ -0,0 +1,845 @@ +// Package p9 implements the 9P filesystem for ollie sessions. +// +// Filesystem layout: +// +// ollie/ +// ctl (write) create/destroy sessions +// "new [backend] [agent]" creates a session +// "kill " destroys a session +// {session-id}/ +// ctl (write) session control: compact, clear, interrupt +// prompt (write) submit a prompt to the agent +// chat (read) cumulative chat history; grows as conversation +// progresses — use cat for a snapshot, tail -f +// to follow new output. +// backend (r/w) read/write the active backend name +// agent (r/w) read/write the active agent name +package p9 + +import ( + "context" + "crypto/rand" + "fmt" + "hash/fnv" + "io" + "net" + "os" + "strings" + "sync" + "time" + + "9fans.net/go/plan9" + "ollie/pkg/agent" + "ollie/pkg/backend" + "ollie/pkg/config" + "ollie/pkg/tools" + "ollie/pkg/tools/execute" + "ollie/pkg/tools/file" +) + +const ( + QTDir = plan9.QTDIR + QTFile = plan9.QTFILE +) + +// session holds all state for one ollie agent session. +type session struct { + mu sync.RWMutex + id string + core agent.Core + backendName string + agentName string + ctx context.Context + cancel context.CancelFunc + // chatLog is an append-only record of the conversation. Reads are served + // directly from this buffer by offset, so tail -f works via polling. + chatLog []byte + chatVers uint32 // incremented on each append; used as Qid.Vers + // state is the current agent state: "idle", "thinking", "calling: " + state string +} + +func (sess *session) setState(s string) { + sess.mu.Lock() + sess.state = s + sess.mu.Unlock() +} + +// appendChat appends data to the session's chat log and bumps the Qid version. +func (sess *session) appendChat(data []byte) { + if len(data) == 0 { + return + } + sess.mu.Lock() + sess.chatLog = append(sess.chatLog, data...) + sess.chatVers++ + sess.mu.Unlock() +} + +// fid tracks per-descriptor state for a single 9P connection. +type fid struct { + path string + qid plan9.Qid + mode uint8 + writeBuf []byte +} + +// connState tracks all open fids for a single 9P connection. +type connState struct { + mu sync.RWMutex + fids map[uint32]*fid +} + +// Server is the 9P server for ollie sessions. +type Server struct { + mu sync.RWMutex + sessions map[string]*session + agentsDir string + sessionsDir string +} + +// New creates a new Server. +func New() *Server { + home, _ := os.UserHomeDir() + return &Server{ + sessions: make(map[string]*session), + agentsDir: home + "/.config/ollie/agents", + sessionsDir: home + "/.config/ollie/sessions", + } +} + +// Serve handles a single 9P connection. +func (s *Server) Serve(conn net.Conn) { + defer conn.Close() + cs := &connState{fids: make(map[uint32]*fid)} + for { + fc, err := plan9.ReadFcall(conn) + if err != nil { + if err != io.EOF { + fmt.Fprintf(os.Stderr, "olliesrv: read: %v\n", err) + } + return + } + plan9.WriteFcall(conn, s.handle(cs, fc)) //nolint:errcheck + } +} + +func (s *Server) handle(cs *connState, fc *plan9.Fcall) *plan9.Fcall { + switch fc.Type { + case plan9.Tversion: + msize := fc.Msize + if msize > 65536 { + msize = 65536 + } + return &plan9.Fcall{Type: plan9.Rversion, Tag: fc.Tag, Msize: msize, Version: "9P2000"} + case plan9.Tauth: + return errFcall(fc, "no auth required") + case plan9.Tattach: + return s.attach(cs, fc) + case plan9.Twalk: + return s.walk(cs, fc) + case plan9.Topen: + return s.open(cs, fc) + case plan9.Tcreate: + return errFcall(fc, "create not supported") + case plan9.Tread: + return s.read(cs, fc) + case plan9.Twrite: + return s.write(cs, fc) + case plan9.Tstat: + return s.stat(cs, fc) + case plan9.Twstat: + // Accept and ignore wstat; 9pfuse sends Twstat for O_TRUNC on open files. + return &plan9.Fcall{Type: plan9.Rwstat, Tag: fc.Tag} + case plan9.Tflush: + // No blocking reads to cancel; always succeed. + return &plan9.Fcall{Type: plan9.Rflush, Tag: fc.Tag} + case plan9.Tclunk: + return s.clunk(cs, fc) + case plan9.Tremove: + return errFcall(fc, "remove not supported") + default: + return errFcall(fc, "unsupported operation") + } +} + +func errFcall(fc *plan9.Fcall, msg string) *plan9.Fcall { + return &plan9.Fcall{Type: plan9.Rerror, Tag: fc.Tag, Ename: msg} +} + +// qidPath returns a stable numeric path for use in Qid structs. +func qidPath(path string) uint64 { + if path == "/" { + return 0 + } + h := fnv.New64a() + h.Write([]byte(path)) + return h.Sum64() +} + +// pathType returns "dir", "file", or "" (not found) for a logical path. +func (s *Server) pathType(path string) string { + if path == "/" { + return "dir" + } + trimmed := strings.TrimPrefix(path, "/") + parts := strings.SplitN(trimmed, "/", 2) + switch len(parts) { + case 1: + if parts[0] == "ctl" { + return "file" + } + s.mu.RLock() + _, ok := s.sessions[parts[0]] + s.mu.RUnlock() + if ok { + return "dir" + } + case 2: + s.mu.RLock() + _, ok := s.sessions[parts[0]] + s.mu.RUnlock() + if !ok { + return "" + } + switch parts[1] { + case "ctl", "prompt", "chat", "backend", "agent", "state": + return "file" + } + } + return "" +} + +func pathParent(path string) string { + if path == "/" { + return "/" + } + i := strings.LastIndex(path, "/") + if i == 0 { + return "/" + } + return path[:i] +} + +func pathJoin(parent, name string) string { + if parent == "/" { + return "/" + name + } + return parent + "/" + name +} + +func pathBase(path string) string { + i := strings.LastIndex(path, "/") + if i < 0 { + return path + } + return path[i+1:] +} + +func (s *Server) attach(cs *connState, fc *plan9.Fcall) *plan9.Fcall { + cs.mu.Lock() + defer cs.mu.Unlock() + qid := plan9.Qid{Type: QTDir, Path: 0} + cs.fids[fc.Fid] = &fid{path: "/", qid: qid} + return &plan9.Fcall{Type: plan9.Rattach, Tag: fc.Tag, Qid: qid} +} + +func (s *Server) walk(cs *connState, fc *plan9.Fcall) *plan9.Fcall { + cs.mu.Lock() + defer cs.mu.Unlock() + + f, ok := cs.fids[fc.Fid] + if !ok { + return errFcall(fc, "bad fid") + } + + // Clone: copy the fid to newfid (even when wnames is empty). + newf := &fid{path: f.path, qid: f.qid} + + if len(fc.Wname) == 0 { + cs.fids[fc.Newfid] = newf + return &plan9.Fcall{Type: plan9.Rwalk, Tag: fc.Tag, Wqid: []plan9.Qid{}} + } + + wqids := make([]plan9.Qid, 0, len(fc.Wname)) + cur := f.path + + for _, name := range fc.Wname { + var next string + if name == ".." { + next = pathParent(cur) + } else { + next = pathJoin(cur, name) + } + + t := s.pathType(next) + if t == "" { + if len(wqids) == 0 { + return errFcall(fc, name+": file not found") + } + break + } + + q := plan9.Qid{Path: qidPath(next)} + if t == "dir" { + q.Type = QTDir + } + wqids = append(wqids, q) + cur = next + } + + if len(wqids) == len(fc.Wname) { + newf.path = cur + newf.qid = wqids[len(wqids)-1] + cs.fids[fc.Newfid] = newf + } + + return &plan9.Fcall{Type: plan9.Rwalk, Tag: fc.Tag, Wqid: wqids} +} + +func (s *Server) open(cs *connState, fc *plan9.Fcall) *plan9.Fcall { + cs.mu.Lock() + defer cs.mu.Unlock() + + f, ok := cs.fids[fc.Fid] + if !ok { + return errFcall(fc, "bad fid") + } + + f.mode = fc.Mode + return &plan9.Fcall{Type: plan9.Ropen, Tag: fc.Tag, Qid: f.qid} +} + +func (s *Server) read(cs *connState, fc *plan9.Fcall) *plan9.Fcall { + cs.mu.RLock() + f, ok := cs.fids[fc.Fid] + if !ok { + cs.mu.RUnlock() + return errFcall(fc, "bad fid") + } + path := f.path + isDir := f.qid.Type&QTDir != 0 + cs.mu.RUnlock() + + if isDir { + data := s.readDir(path, fc.Offset, fc.Count) + return &plan9.Fcall{Type: plan9.Rread, Tag: fc.Tag, Count: uint32(len(data)), Data: data} + } + + // chat is served directly from the session's append-only log. + if pathBase(path) == "chat" { + return s.readChat(fc, path) + } + + content := s.readFile(path) + var data []byte + off := int(fc.Offset) + if off < len(content) { + end := off + int(fc.Count) + if end > len(content) { + end = len(content) + } + data = []byte(content[off:end]) + } + return &plan9.Fcall{Type: plan9.Rread, Tag: fc.Tag, Count: uint32(len(data)), Data: data} +} + +// readChat serves bytes from the session's chatLog at the requested offset. +// Returns 0 bytes when offset is at or past the current end (normal EOF); +// tail -f detects growth via stat and re-reads from its last position. +func (s *Server) readChat(fc *plan9.Fcall, path string) *plan9.Fcall { + parts := strings.SplitN(strings.TrimPrefix(path, "/"), "/", 2) + if len(parts) != 2 { + return &plan9.Fcall{Type: plan9.Rread, Tag: fc.Tag, Count: 0} + } + s.mu.RLock() + sess := s.sessions[parts[0]] + s.mu.RUnlock() + if sess == nil { + return &plan9.Fcall{Type: plan9.Rread, Tag: fc.Tag, Count: 0} + } + + sess.mu.RLock() + log := sess.chatLog + sess.mu.RUnlock() + + var data []byte + off := int(fc.Offset) + if off < len(log) { + end := off + int(fc.Count) + if end > len(log) { + end = len(log) + } + data = log[off:end] + } + return &plan9.Fcall{Type: plan9.Rread, Tag: fc.Tag, Count: uint32(len(data)), Data: data} +} + +// readFile returns the text content for a readable session file. +func (s *Server) readFile(path string) string { + parts := strings.SplitN(strings.TrimPrefix(path, "/"), "/", 2) + if len(parts) != 2 { + return "" + } + sessID, fileName := parts[0], parts[1] + + s.mu.RLock() + sess := s.sessions[sessID] + s.mu.RUnlock() + if sess == nil { + return "" + } + + sess.mu.RLock() + defer sess.mu.RUnlock() + switch fileName { + case "backend": + return sess.backendName + "\n" + case "agent": + return sess.agentName + "\n" + case "state": + return sess.state + "\n" + } + return "" +} + +func (s *Server) write(cs *connState, fc *plan9.Fcall) *plan9.Fcall { + cs.mu.Lock() + f, ok := cs.fids[fc.Fid] + if !ok { + cs.mu.Unlock() + return errFcall(fc, "bad fid") + } + // Accumulate; the 9P client may split large writes across multiple Twrite messages. + end := int(fc.Offset) + len(fc.Data) + if end > len(f.writeBuf) { + grown := make([]byte, end) + copy(grown, f.writeBuf) + f.writeBuf = grown + } + copy(f.writeBuf[fc.Offset:], fc.Data) + cs.mu.Unlock() + return &plan9.Fcall{Type: plan9.Rwrite, Tag: fc.Tag, Count: uint32(len(fc.Data))} +} + +func (s *Server) stat(cs *connState, fc *plan9.Fcall) *plan9.Fcall { + cs.mu.RLock() + f, ok := cs.fids[fc.Fid] + cs.mu.RUnlock() + if !ok { + return errFcall(fc, "bad fid") + } + dir := s.makeStat(f.path) + stat, err := dir.Bytes() + if err != nil { + return errFcall(fc, err.Error()) + } + return &plan9.Fcall{Type: plan9.Rstat, Tag: fc.Tag, Stat: stat} +} + +func (s *Server) clunk(cs *connState, fc *plan9.Fcall) *plan9.Fcall { + cs.mu.Lock() + f, ok := cs.fids[fc.Fid] + if ok { + if len(f.writeBuf) > 0 { + path := f.path + data := make([]byte, len(f.writeBuf)) + copy(data, f.writeBuf) + go s.handleWrite(path, strings.TrimSpace(string(data))) + } + delete(cs.fids, fc.Fid) + } + cs.mu.Unlock() + return &plan9.Fcall{Type: plan9.Rclunk, Tag: fc.Tag} +} + +// handleWrite processes a fully-assembled write payload for the given path. +// Called asynchronously from clunk. +func (s *Server) handleWrite(path, input string) { + if input == "" { + return + } + + if path == "/ctl" { + s.handleRootCtl(input) + return + } + + parts := strings.SplitN(strings.TrimPrefix(path, "/"), "/", 2) + if len(parts) != 2 { + return + } + sessID, fileName := parts[0], parts[1] + + s.mu.RLock() + sess := s.sessions[sessID] + s.mu.RUnlock() + if sess == nil { + return + } + + // assistantStarted tracks whether we've emitted the "assistant: " label + // for the current turn. Resets at turn boundaries so each response gets + // exactly one label regardless of how many streaming chunks arrive. + assistantStarted := false + publish := func(ev agent.Event) { + switch ev.Role { + case "call": + sess.setState("calling: " + ev.Name) + assistantStarted = false + case "tool": + sess.setState("thinking") + assistantStarted = false + case "newline": + assistantStarted = false + case "assistant": + if !assistantStarted { + sess.appendChat([]byte("assistant: ")) + assistantStarted = true + } + } + sess.appendChat(formatEvent(ev)) + } + + switch fileName { + case "prompt": + sess.appendChat([]byte("user: " + input + "\n")) + sess.setState("thinking") + sess.core.Submit(sess.ctx, input, publish) + sess.setState("idle") + + case "ctl": + switch { + case input == "stop" || input == "interrupt": + sess.core.Interrupt(agent.ErrInterrupted) + case strings.HasPrefix(input, "/"): + sess.core.Submit(sess.ctx, input, publish) + default: + fmt.Fprintf(os.Stderr, "olliesrv: session ctl: unknown command %q (use stop, interrupt, or /slashcmd)\n", input) + } + + case "backend": + sess.mu.Lock() + old := sess.backendName + sess.backendName = input + sess.mu.Unlock() + sess.core.Submit(sess.ctx, "/backend "+input, func(ev agent.Event) { + if ev.Role == "error" { + sess.mu.Lock() + sess.backendName = old + sess.mu.Unlock() + } + publish(ev) + }) + + case "agent": + sess.mu.Lock() + old := sess.agentName + sess.agentName = input + sess.mu.Unlock() + sess.core.Submit(sess.ctx, "/agent "+input, func(ev agent.Event) { + if ev.Role == "error" { + sess.mu.Lock() + sess.agentName = old + sess.mu.Unlock() + } + publish(ev) + }) + } +} + +func (s *Server) handleRootCtl(input string) { + parts := strings.Fields(input) + if len(parts) == 0 { + return + } + switch parts[0] { + case "new": + if err := s.createSession(parts[1:]); err != nil { + fmt.Fprintf(os.Stderr, "olliesrv: new session: %v\n", err) + } + case "kill": + if len(parts) < 2 { + fmt.Fprintf(os.Stderr, "olliesrv: ctl: kill requires a session id\n") + return + } + s.killSession(parts[1]) + default: + fmt.Fprintf(os.Stderr, "olliesrv: ctl: unknown command %q (use: new [backend] [agent], kill )\n", parts[0]) + } +} + +func (s *Server) createSession(args []string) error { + home, _ := os.UserHomeDir() + + backendOverride := "" + agentName := "default" + if len(args) > 0 { + backendOverride = args[0] + } + if len(args) > 1 { + agentName = args[1] + } + + var ( + be backend.Backend + err error + ) + if backendOverride != "" { + old := os.Getenv("OLLIE_BACKEND") + os.Setenv("OLLIE_BACKEND", backendOverride) //nolint:errcheck + be, err = backend.New() + os.Setenv("OLLIE_BACKEND", old) //nolint:errcheck + } else { + be, err = backend.New() + } + if err != nil { + return fmt.Errorf("backend: %w", err) + } + + if err := os.MkdirAll(s.sessionsDir, 0700); err != nil { + return fmt.Errorf("sessions dir: %w", err) + } + + cfgPath := agentConfigPath(s.agentsDir, agentName) + cfg, _ := config.Load(cfgPath) // nil cfg is handled by BuildAgentEnv + + newDisp := func() tools.Dispatcher { + d := tools.NewDispatcher() + d.AddServer("execute", execute.New( + home+"/.local/state/ollie", + home+"/.cache/ollie/exec", + )) + d.AddServer("file", file.New()) + return d + } + + env := agent.BuildAgentEnv(cfg, newDisp()) + sessID := newSessionID() + + ctx, cancel := context.WithCancel(context.Background()) + core := agent.NewAgentCore(agent.AgentCoreConfig{ + Backend: be, + AgentName: agentName, + AgentsDir: s.agentsDir, + SessionsDir: s.sessionsDir, + SessionID: sessID, + Env: env, + NewDispatcher: newDisp, + }) + + sess := &session{ + id: sessID, + core: core, + backendName: be.Name(), + agentName: agentName, + ctx: ctx, + cancel: cancel, + state: "idle", + } + + s.mu.Lock() + s.sessions[sessID] = sess + s.mu.Unlock() + + fmt.Fprintf(os.Stderr, "olliesrv: new session %s (backend=%s agent=%s)\n", + sessID, sess.backendName, agentName) + return nil +} + +func (s *Server) killSession(id string) { + s.mu.Lock() + sess := s.sessions[id] + delete(s.sessions, id) + s.mu.Unlock() + if sess != nil { + sess.cancel() + fmt.Fprintf(os.Stderr, "olliesrv: killed session %s\n", id) + } +} + +// agentConfigPath resolves the config file for a named agent. +func agentConfigPath(agentsDir, name string) string { + p := agentsDir + "/" + name + ".json" + if _, err := os.Stat(p); err == nil { + return p + } + if name == "default" { + home, _ := os.UserHomeDir() + return home + "/.config/ollie/config.json" + } + return p +} + +func newSessionID() string { + b := make([]byte, 3) + rand.Read(b) //nolint:errcheck + return time.Now().Format("20060102-150405") + "-" + fmt.Sprintf("%06x", b) +} + +// formatEvent converts an agent Event to bytes for appending to the chat log. +// Output matches ollie-tui's MakeOutputFn so the chat file looks identical to +// what appears in the TUI chat pane. +func formatEvent(ev agent.Event) []byte { + switch ev.Role { + case "assistant": + return []byte(ev.Content) + case "call": + args := squashWhitespace(ev.Content) + if len(args) > 500 { + args = args[:500] + "..." + } + return []byte("-> " + ev.Name + "(" + args + ")\n") + case "tool": + s := strings.TrimRight(ev.Content, "\n") + if len(s) > 500 { + s = s[:500] + "..." + } + return []byte("= " + s + "\n") + case "retry": + return []byte("retrying in " + ev.Content + "s...\n") + case "error": + return []byte("error: " + ev.Content + "\n") + case "stalled": + return []byte("agent stalled\n") + case "info": + return []byte(ev.Content) + case "newline": + return []byte("\n") + default: + return nil + } +} + +func squashWhitespace(s string) string { + return strings.Join(strings.Fields(s), " ") +} + +// readDir serializes directory entries for the given path, respecting offset and count. +func (s *Server) readDir(path string, offset uint64, count uint32) []byte { + var dirs []plan9.Dir + + makeDir := func(name, fpath string, isDir bool, mode plan9.Perm) plan9.Dir { + q := plan9.Qid{Path: qidPath(fpath)} + if isDir { + q.Type = QTDir + } + return plan9.Dir{Qid: q, Mode: mode, Name: name, Uid: "ollie", Gid: "ollie", Muid: "ollie"} + } + + if path == "/" { + dirs = append(dirs, makeDir("ctl", "/ctl", false, 0200)) + s.mu.RLock() + for id := range s.sessions { + dirs = append(dirs, makeDir(id, "/"+id, true, plan9.DMDIR|0555)) + } + s.mu.RUnlock() + } else { + // Session directory. + sessPath := path + type entry struct { + name string + mode plan9.Perm + } + files := []entry{ + {"ctl", 0200}, + {"prompt", 0200}, + {"chat", 0444}, + {"state", 0444}, + {"backend", 0666}, + {"agent", 0666}, + } + for _, e := range files { + dirs = append(dirs, makeDir(e.name, sessPath+"/"+e.name, false, e.mode)) + } + } + + // Serialize all entries to a byte slice. + var allData []byte + for _, d := range dirs { + b, err := d.Bytes() + if err != nil { + continue + } + allData = append(allData, b...) + } + + if offset >= uint64(len(allData)) { + return nil + } + + // Return complete entries starting at offset, up to count bytes. + remaining := allData[offset:] + var result []byte + for len(remaining) >= 2 { + // Each serialized Dir starts with a uint16 (little-endian) size of the rest. + entrySize := int(remaining[0]) | int(remaining[1])<<8 + total := entrySize + 2 + if total > len(remaining) { + break + } + if uint32(len(result)+total) > count { + break + } + result = append(result, remaining[:total]...) + remaining = remaining[total:] + } + return result +} + +// makeStat builds a plan9.Dir for a logical path. +func (s *Server) makeStat(path string) plan9.Dir { + base := pathBase(path) + if path == "/" { + base = "." + } + + t := s.pathType(path) + isDir := t == "dir" + + qid := plan9.Qid{Path: qidPath(path)} + var mode plan9.Perm + if isDir { + qid.Type = QTDir + mode = plan9.DMDIR | 0555 + } else { + switch base { + case "ctl", "prompt": + mode = 0200 + case "chat", "state": + mode = 0444 + case "backend", "agent": + mode = 0666 + default: + mode = 0444 + } + } + + dir := plan9.Dir{ + Qid: qid, + Mode: mode, + Name: base, + Uid: "ollie", + Gid: "ollie", + Muid: "ollie", + } + + // For chat files, report the actual log size and Qid version so that + // polling tools (tail -f) can detect growth via stat. + if base == "chat" { + parts := strings.SplitN(strings.TrimPrefix(path, "/"), "/", 2) + if len(parts) == 2 { + s.mu.RLock() + sess := s.sessions[parts[0]] + s.mu.RUnlock() + if sess != nil { + sess.mu.RLock() + dir.Length = uint64(len(sess.chatLog)) + dir.Qid.Vers = sess.chatVers + sess.mu.RUnlock() + } + } + } + + return dir +} diff --git a/main.go b/main.go new file mode 100644 index 0000000..ac7b860 --- /dev/null +++ b/main.go @@ -0,0 +1,170 @@ +// olliesrv - 9P server for ollie sessions +package main + +import ( + "flag" + "fmt" + "net" + "os" + "os/exec" + "os/signal" + "path/filepath" + "syscall" + + "9fans.net/go/plan9/client" + p9 "olliesrv/internal/p9" +) + +const serviceName = "ollie" + +var mountPath = flag.String("mount", "", "FUSE mount path (default: $HOME/mnt/ollie)") + +func main() { + flag.Parse() + + if flag.NArg() < 1 { + fmt.Fprintln(os.Stderr, "usage: olliesrv ") + os.Exit(1) + } + + ns := client.Namespace() + if ns == "" { + fmt.Fprintln(os.Stderr, "no namespace") + os.Exit(1) + } + + sockPath := filepath.Join(ns, serviceName) + pidPath := filepath.Join(ns, serviceName+".pid") + + switch flag.Arg(0) { + case "start": + if isRunning(sockPath) { + fmt.Println("olliesrv already running") + os.Exit(0) + } + daemonize(pidPath) + case "fgstart": + if isRunning(sockPath) { + fmt.Println("olliesrv already running") + os.Exit(0) + } + runServer(sockPath, pidPath) + case "stop": + stopServer(sockPath, pidPath) + case "status": + if isRunning(sockPath) { + fmt.Println("olliesrv running") + } else { + fmt.Println("olliesrv not running") + os.Exit(1) + } + default: + fmt.Fprintln(os.Stderr, "usage: olliesrv ") + os.Exit(1) + } +} + +func isRunning(sockPath string) bool { + conn, err := net.Dial("unix", sockPath) + if err == nil { + conn.Close() + return true + } + return false +} + +func daemonize(pidPath string) { + exe, _ := os.Executable() + args := []string{"fgstart"} + if *mountPath != "" { + args = append(args, "-mount", *mountPath) + } + cmd := exec.Command(exe, args...) + cmd.SysProcAttr = &syscall.SysProcAttr{Setsid: true} + if err := cmd.Start(); err != nil { + fmt.Fprintf(os.Stderr, "failed to start: %v\n", err) + os.Exit(1) + } + fmt.Printf("olliesrv started (pid %d)\n", cmd.Process.Pid) +} + +func stopServer(sockPath, pidPath string) { + data, err := os.ReadFile(pidPath) + if err != nil { + fmt.Println("olliesrv not running") + return + } + var pid int + fmt.Sscanf(string(data), "%d", &pid) + if pid > 0 { + syscall.Kill(pid, syscall.SIGTERM) //nolint:errcheck + } + os.Remove(sockPath) //nolint:errcheck + os.Remove(pidPath) //nolint:errcheck + fmt.Println("olliesrv stopped") +} + +func runServer(sockPath, pidPath string) { + // Remove stale socket + if _, err := os.Stat(sockPath); err == nil { + os.Remove(sockPath) //nolint:errcheck + } + + // Write PID file + os.WriteFile(pidPath, []byte(fmt.Sprintf("%d", os.Getpid())), 0644) //nolint:errcheck + + srv := p9.New() + + listener, err := net.Listen("unix", sockPath) + if err != nil { + fmt.Fprintf(os.Stderr, "listen: %v\n", err) + os.Exit(1) + } + + go func() { + for { + conn, err := listener.Accept() + if err != nil { + return + } + go srv.Serve(conn) + } + }() + + fmt.Printf("olliesrv listening on %s\n", sockPath) + + // Optional FUSE mount + mnt := *mountPath + if mnt == "" { + mnt = os.Getenv("OLLIE_9MOUNT") + } + if mnt == "" { + home, _ := os.UserHomeDir() + mnt = filepath.Join(home, "mnt", "ollie") + } + var fuseCmd *exec.Cmd + if err := os.MkdirAll(mnt, 0755); err != nil { + fmt.Fprintf(os.Stderr, "warning: cannot create mount dir: %v\n", err) + } else { + fuseCmd = exec.Command("9pfuse", sockPath, mnt) + if err := fuseCmd.Start(); err != nil { + fmt.Fprintf(os.Stderr, "warning: 9pfuse: %v\n", err) + fuseCmd = nil + } else { + fmt.Printf("mounted at %s\n", mnt) + } + } + + sigChan := make(chan os.Signal, 1) + signal.Notify(sigChan, syscall.SIGINT, syscall.SIGTERM) + <-sigChan + + fmt.Println("shutting down") + if fuseCmd != nil { + exec.Command("fusermount", "-u", mnt).Run() //nolint:errcheck + fuseCmd.Wait() //nolint:errcheck + } + listener.Close() //nolint:errcheck + os.Remove(sockPath) + os.Remove(pidPath) +} diff --git a/mkfile b/mkfile new file mode 100644 index 0000000..0228b6c --- /dev/null +++ b/mkfile @@ -0,0 +1,11 @@ +INSTALL_PATH=$HOME/bin + +all:V: install + +build:V: + go build -o $INSTALL_PATH/olliesrv . + +install:V: build + +clean:V: + rm -f $INSTALL_PATH/olliesrv